# Patent

## Title
Door viewer security cover

## Abstract

A security cover device for a door viewer inserted into a door includes a housing configured to couple to a door with a door viewer, an eye piece movably coupled with the housing, and a shutter assembly. The shutter assembly includes a shutter member disposed within the housing, the shutter being configured to alter the amount of light passing through the housing, and an actuator in communication with the shutter member to selectively reposition the shutter member with respect to the housing from a first shutter member position to a second shutter member position, wherein the actuator is actuated to reposition the shutter member in response to the eye piece being moved in relation to the housing.

## Background
CROSS REFERENCE TO RELATED APPLICATIONS
The present application is a continuation-in-part of application Ser. No. 13/602,555, filed on Sep. 14, 2012 and entitled “Door Viewer Security Cover”, which is a continuation-in-part of application Ser. No. 13/295,121, filed on Nov. 14, 2011 and entitled “Door Viewer Security Cover,” the disclosures of which are incorporated herein by reference their entireties.


FIELD OF THE INVENTION
The present invention relates to a security cover for a door viewer device such as a peephole.
BACKGROUND OF THE INVENTION
Door viewer devices such as peepholes are security devices that permit a viewer located on one side of the door (e.g., the inside of the door) to observe callers located on the other side of the door (e.g., the outside of the door). Such door viewer devices typically include a lens system that generates a virtual image of the various objects located in front of the door. In operation, a user positioned behind the door peers through the door viewer device to view the immediate area surrounding the door, thereby enabling the person to confirm the identity of persons or objects before opening the door. Conventional door viewer devices suffer from several disadvantages. First, conventional door viewer devices permit two-way viewing. That is, while door viewer devices permit the viewer on the inside to view the area located in front of the door, they further permit a viewer positioned in front of the door to view the area proximate the rear side of the door. In addition, conventional door viewer devices permit outside viewers (i.e., persons located in front of the door) to view changes in light that occur when the insider viewer approaches the door and looks through the peephole. By noting changes in light within the peephole (e.g., from light to dark), the outside viewer is alerted to the fact that someone is located within the structure (e.g., the home, apartment, business, etc.) and is positioned behind the door, which compromises the security of the persons located within the structure.
Thus, it would be desirable to provide a security device that prevents outside viewers from viewing into the secured area (e.g., a house, office, etc.), as well as enables an insider viewer to look through the door viewer device without generating changes in light that might occur during viewing.
SUMMARY OF THE INVENTION
The present invention is directed toward a security cover for a door viewer device such as a peephole. The security cover includes a housing configured to couple to a door with a door viewer, an eye piece movably coupled with the housing, and a shutter assembly. The shutter assembly includes a shutter member disposed within the housing, the shutter being configured to alter the amount of light passing through the housing, and an actuator in communication with the shutter member to selectively reposition the shutter member with respect to the housing from a first shutter member position to a second shutter member position, wherein the actuator is actuated to reposition the shutter member in response to the eye piece being moved in relation to the housing.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1A illustrates a front perspective view of a security cover for a door viewer in accordance with an aspect of the present invention.
FIG. 1B illustrates a rear perspective view of the security cover shown in FIG. 1A.
FIG. 2 illustrates an exploded view of the security cover shown in FIG. 1A.
FIGS. 3A and 3B illustrate rear perspective views of the security cover shown in FIG. 1A, with the eyecup and back panel removed to show the operation of the shutter mechanism.
FIG. 4 illustrates an exploded view of a security cover in accordance with another aspect of the present invention.
FIGS. 5A and 5B illustrate rear perspective views of the security cover shown in FIG. 4, with the eyecup and back panel removed to show the operation of the shutter mechanism.
FIG. 6 illustrates an exploded view of the security cover in accordance with another aspect of the present invention.
FIGS. 7A and 7B illustrate rear perspective views of the security cover shown in FIG. 6, with the eyecup and back panel removed to show the operation of the shutter mechanism.
FIG. 8 illustrates an exploded view of a security cover in accordance with another aspect of the invention.
FIGS. 9A and 9B illustrate rear perspective views of a security cover in accordance with an aspect of the invention, with the eyecup and back panel removed to show the shutter mechanism in its closed and open positions, respectively.
FIGS. 10A, 10B, and 10C illustrate rear plan views of the device of FIG. 9A, showing the operation of the shutter mechanism.
FIG. 11 illustrates a security cover for a door viewer in accordance with an aspect of the invention.
FIG. 12A illustrates a security cover for a door viewer in accordance with an aspect of the invention.
FIG. 12B illustrates an exploded view of the security cover shown in FIG. 12A.
FIGS. 13A-13D illustrate the base member of the security cover shown in FIG. 12A.
FIG. 14 illustrates a close-up of a hook on the base member shown in FIG. 13A.
FIGS. 15A-15F illustrate the shutter assembly of the security cover shown in FIG. 12A.
FIG. 16 illustrates a rear plan view of the device of FIG. 12A.
FIGS. 17A-17C illustrate the operation of the security cover shown in FIG. 12A.
FIGS. 18A and 18B illustrate the security cover shown in FIG. 12A, further adapted for use as a peephole.
FIG. 19 illustrates a cross sectional view of a security cover for a door viewer in accordance with an aspect of the present invention.
FIGS. 20 and 21 illustrate exploded, cross sectional views in perspective of a further embodiment of a security cover for a door view in accordance with an aspect of the present invention.
FIG. 22 illustrates an exploded cross sectional side view of a revised version of the security cover of FIGS. 20 and 21 and further including a bias spring return mechanism.
FIG. 23 illustrates an exploded, cross sectional view in perspective of a portion of the security cover of FIG. 22.
FIGS. 24 and 25 illustrate a cross sectional side view of the security cover of FIG. 22 in operation.
FIG. 26 illustrates a side view of the security cover of FIG. 20.



Like reference numerals have been used to identify like elements throughout this disclosure.
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1A and 1B illustrate a security cover for a door viewer in accordance with an embodiment of the invention. As shown, the security cover 10 includes a body or housing 100 having a generally cylindrical side wall 105, a forward plate 110 including a forward aperture 115, and a rearward plate 120 including a rearward or viewing aperture 125. An eyecup or eye shield 130 (e.g., similar to those found on binoculars) is coupled to the rearward plate 120, surrounding the viewing aperture. As shown, the forward plate 110 is housed within the body 100, being axially spaced from body forward end. The forward plate defines a forward, generally annular rim 135 operable to contact the door surface. The rim 135 may be treated such that it couples to the door surface. By way of example, the rim 135 may be coated with an adhesive. In other embodiments, the security cover 10 may include one or more fastening members (e.g., grommets) extending radially from the body 100 to permit fasteners such nails or screws to be utilized to secure the cover 10 to the door. In operation, the security cover 10 is connected to the rear surface of a door such that the rim 135 surrounds the viewing port of the door viewer, and such that the forward aperture generally aligns with the viewing port. Once connected to the door, the inside viewer (i.e., the person located on the back side (or inside) of the door) places an eye against the eyecup 130, looks through the rearward 125 and forward 115 apertures and through the door viewer.
The security cover 10 further includes a shutter mechanism disposed between the apertures 115, 125 operable to selectively open and close the viewing aperture 125. Referring to FIG. 2, the rear side 205 of the forward plate 110 includes a first post 210A laterally spaced from a second post 210B. Each post 210A, 210B extends axially from the rear side or the forward plate 110. A first shutter member 220A is pivotally mounted on the first post 210A and a second shutter member 220B is pivotally mounted on the second post 210B. The shutter members 220A, 220B may be biased towards the center of the aperture (i.e., towards each other) via a biasing member 225 (e.g., a spring) that spans the members.
The first shutter member 220A includes a body 230A possessing a generally semicircular shape, having a straight edge portion 235A and a rounded edge portion 240A. The body 230A further includes a truncated area 245 along its proximal portion that is configured to frictionally mesh with a protruding area on the second shutter 220A. The second shutter member 220B includes a body 230B possessing a generally semicircular shape, defining a generally straight edge portion 235B and a generally rounded edge portion 240B. The rounded edge portions 240A, 240B of the shutter members 220A, 220B may possess a radius of curvature that corresponds to the radius of curvature of the side wall inner surface 247. With this configuration, the rounded edge portions 240A, 240B are contoured to their respective side wall area. Additionally, the interior surface 247 of the body 100 includes a recess 248 defining an annular shoulder on which the rearward plate rests 120.
The second shutter member 220B further includes a lever 250 extending radially from the body 230B. The base 252 of the lever 250 is configured to engage the truncated area 245 of the first shutter body 230A such that rotation of the second shutter member 220B causes an opposite rotation in the first shutter member 220A (explained in greater detail below). The distal portion of the lever 250 of the second shutter member 220B extends through an elongated slot 255 formed into side wall 105 of the housing 100. The slot 255 may define the travel length an operator may move the lever 250 during operation.
The operation of the security cover 10 is explained with reference to FIGS. 3A and 3B. The biasing member 225 biases the shutter members 220A, 220B in a normal or closed position, in which the straight edge portions 235A, 235B of the shutter members 220A, 220B contact each other. In this position, the body 230A, 230B of each shutter member 220A, 220B at least partially blocks the forward aperture 115. As such, a viewer positioned on the inside of the door cannot see through the cover 10. Similarly, a viewer positioned on the outside of the door cannot see light variations through the door viewer, and cannot view the area proximate the interior door surface. Should an inside viewer desire to look through the door viewer, the inside viewer engages the lever 250 (indicated by arrow F) to pivot to rotate the upper circle of the second shutter member 220B (i.e., the base 252) toward the upper circle of (i.e., truncated portion 245) the first shutter member 220A (e.g., in a clockwise direction from the perspective of FIG. 3B). Rotation of the second shutter member 220B causes the base 252 of the lever 250 to frictionally engage the truncated portion 245 of the first shutter member 220A; consequently, the clockwise rotation of the second shutter member 220B rotates the first shutter member 220A in counterclockwise direction. As a result, the shutter members 220A, 220B separate, moving from the normal, closed position (FIG. 3A) to an opened position (FIG. 3B). Since the outer rounded edges 240A, 240B of the shutter members 220A, 220B are contoured to the inner surface 247 of the side wall 105, the shutter members abut the side wall. With this configuration, in the opened position, the bodies 230A, 230B of the shutter members 220A, 220B clear the forward 115 and rearward 125 apertures enabling an inside viewer may see through the cover 10 and the door viewer device.
Thus, the present invention provides an inexpensive, easily operated device that can be attached to any conventional door including a door viewer. The cover 10 is biased in its closed position; consequently, an outside viewer (i.e., a viewer positioned along the front of the door) cannot look through the door viewer to see into the secured structure (e.g., house, apartment, etc.). In addition, the outside viewer cannot see any light variation that occurs as an inside viewer approaches the door viewer device. Should an inside viewer desire to look through the door viewer device, the inside viewer user simply places an eye against the eyecup 130, further shielding the door viewer device from light, and then engages the lever 250 to open the shutter mechanism as described above. The inside viewer may now view the outside viewer to confirm the outside viewer's identity. During the viewing process, the outside viewer remains unaware of the presence of the inside viewer since no light variation can be detected.
FIG. 4 illustrates a security cover 40 for a door viewer device in accordance with another aspect of the invention. As shown, the cover 40 includes a structure similar to that described above, including a housing 400 with a side wall 405, and axially extending posts 407A, 407B disposed on the rear side 410 of a forward plate 415. This configuration further includes a first shutter member 420A including a first lever 425A and a first body 430A, as well as a second shutter member 420B including a second lever 425B and a second body 430B. That is, instead of the mechanism including a single lever that controls both shutter members, each shutter member 420A, 420B now includes a lever 425A, 425B extending radially from the body 430A, 430B. The shutter bodies 430A, 430B, moreover, may no longer be geared together. The housing 400 further includes a first slot 435A associated with the first lever 425A and a second slot 435B associated with the second lever 425B.
In operation, the shutter mechanism beings in its normal, closed position as shown in FIG. 5A. The inside viewer engages the levers 425A, 425B, driving them toward each other (e.g., the operator squeezes the levers together, indicated by F1 and F2). Each shutter member 420A, 420B pivots on its respective post 407A, 407B such that the first shutter member 420A rotates in one direction (e.g., a counterclockwise direction, indicated by R2) while the second shutter member 420B rotates in an opposite direction (e.g., a clockwise direction, indicated by R1). The shutter members 420A, 420B are rotated until the bodies 430A, 430B clear the forward 450 and rearward 460 apertures. Once clear of the forward aperture 450 clear the inside viewer may look though the security cover 10 and the door viewer device to investigate the area proximate the front of the door. Once the levers 405A, 405B are released, the biasing member 455 drives the shutter members 420A, 420B back to their normal (closed) position, in which each body 430A, 430B at least partially blocks the forward aperture 450.
FIG. 6 illustrates a security cover for a door viewer device in accordance with another aspect of the invention. As shown, the security cover 60 includes a housing 600, including a side wall 605 with a forward plate 610 defining a forward aperture 615, a rearward plate 620 defining a rearward or viewing aperture 625, and an axial post 627 extending distally from the rear side 630 of the forward plate 610. The cover 60 further includes a single shutter member 640 including a generally circular body 645 and a lever 650 extending radially therefrom. The side wall 605 of the housing 600 further includes a slot 660 that enables passage of the shutter member 640 therethrough. As with the other embodiments, the cover 60 further includes an eyecup 670 secured to the rearward plate 620.
Operation of the device is explained with reference to FIGS. 7A and 7B. As shown, pivoting the lever 650 (indicated by F3) drives the body 645 of the shutter member 640 out of alignment with the viewing aperture 625, enabling an inside viewer to look through the door viewer device. Releasing the lever 650 returns the shutter member 640 to its normal closed position, via gravity.
FIGS. 8-10 illustrate a security cover for a door viewer device in accordance with another aspect of the invention. As illustrated, the security cover 80 includes a housing 800 including a side wall 805 defining a rim 807, a forward annular plate 810 defining a forward aperture 815, and a rearward annular plate 820 defining a rearward or viewing aperture 825. As shown, the rim 807 is further coated with an adhesive 840, which, in turn, is covered with release paper 845.
Referring to FIGS. 9A and 9B, the shutter mechanism is in the form of an optical diaphragm 900 including a plurality of blades 905A-905F pivotally coupled to the rear side of the forward plate 810 via a post extending from the forward plate rear side in a manner similar to that described above (posts not shown). Each blade 905A-905F possesses a generally tear-drop shape including a narrow proximal end and a wide distal end. Each blade includes a follower pin 910A-910F disposed at an intermediate location along the blade, proximate blade outer edge. In addition, the rearward plate 820 further includes a plurality of radial slots 815A-815F angularly spaced about the plate. Each follower pin 910A-910F is captured within its respective slot 815A-815F, with the slot defining the travel path of each blade. It should be understood, however, that the diaphragm 900 may possess any number of blades. Additionally, each blade may possess any dimensions and shape (e.g., polygons, etc.) suitable for its described purpose.
Referring to FIGS. 10A-10C, with this configuration, rotation of the rearward plate 820 (indicated by arrow R4) causes each follower pin 910A-910F to moves along its respective slot 815A-815F, pivoting each blade 905A-905F radially, rotating it from an opened position, in which each blade clears the forward aperture 815 (FIG. 10A), to a closed position (FIG. 10C), in which each blade at least partially blocks the forward aperture (FIG. 10C). That is, the wider end of the blade, defining the distal blade end, at least partially covers the forward aperture 815 in the closed position. To close the shutter mechanism, the rearward plate 820 is rotated in the reverse direction.
FIG. 11 illustrates a security cover for a door viewer device in accordance with an aspect of the invention. As shown, the security cover 1100 includes a structure similar to that described above in FIGS. 1A and 1B. In this configuration, however, the biasing member 1105 is a coil spring coupled to the distal end of the second shutter member 1110B. As with the embodiment described above regarding FIG. 1A, movement of the second shutter member 1110B generates a corresponding movement in the first shutter member 1110A.
FIGS. 12-18 illustrate a security cover for a door viewer in accordance with another aspect of the invention. Referring to FIGS. 12A and 12B, the cover assembly 1200 includes a base or coupling member 1205 and a shutter assembly 1210 coupled to the base member. The base member 1205 is configured to couple the shutter assembly 1210 to the area of the door containing the door viewer. Referring to FIGS. 13A-13D, the base member 1205 includes a body 1305 defining a first or door-facing end or side 1310A and a second or shutter-facing end or side 1310B. The body 1305 may be generally annular, including a central opening or aperture 1312 defined by an inner wall 1315. The body 1305 may taper in the direction of the shutter-facing side 1310B, i.e., the outer diameter of the body may be wider along its door-facing side 1310A and a narrower shutter-facing side 1310B. Stated another way, the body 1305 may be generally frustoconical. Accordingly, the diameter of the opening 1312 along the door-facing side 1310A may be greater than the diameter of the opening 1312 along the shutter-facing side 1310B.
The base member 1205 further includes one or more axial guide walls extending distally from the shutter-facing surface 1310B of the body 1305. In the embodiment illustrated, the base member 1205 includes three axial guide walls 1320A, 1320B, 1320C angularly spaced about the body 1305 along the body inner perimeter 1322 (e.g., the walls 1320A-1320C may be equidistantly spaced). Each guide wall 1320A-1320C may span a predetermined angular extent along the body. By way of example, the first guide wall may extend approximately 25°-35° along the inner perimeter of the body 1305 defined by the inner wall 1315, while the second guide wall 1320A and the third guide wall 1320C may each extend approximately 45-55° along the inner perimeter of the body defined by the inner wall 1315. It should be understood that the guide walls 1320A-1320C may possess any dimensions (height, width, length) and shape suitable for their described purpose. Additionally, the body 1305 may contain any number of guide walls. In operation, the guide walls 1320A-1320C engage the interior surface of the shutter member housing to maintain the shutter assembly in position during coupling to the base member.
The surface of the door-facing side 1310A of the base member 1205 may be modified such that the base member attaches to the door surface. By way of example, the door-facing surface may be coated with a layer of adhesive (e.g., pressure sensitive adhesive), optionally covered with release paper. Alternatively, the body 1305 may be modified to permit the use of fasteners (e.g., including fastener (screw) channels through which a fastener passes).
The base member 1205 further includes a connection mechanism operable to mate with a corresponding connection mechanism on the shutter assembly 1210, coupling the shutter assembly to the base member. For example, the base member 1205 may include one or more axial notches and/or hooks adapted to capture corresponding elements on the shutter housing. Referring to FIG. 13A, the base member 1205 includes a plurality axial notches extending axially through the body 1305 at predetermined angular locations. In the illustrated embodiment, the connection mechanism includes three axial notches 1325A, 1325B, 1325C angularly spaced about the body 1305, each being disposed between adjacent axial walls 1320A-1320C. The shape and dimensions of the notches 1325A-1325C may be any suitable for its described purpose. In the illustrated embodiment, the notches 1325A-1325C are polygonal, extending radially into the body 1305.
The connection mechanism may further include one or more hooks operable to engage corresponding locking tabs disposed on the shutter assembly. In the illustrated embodiment, the connection mechanism includes three hooks 1330A, 1330B, 1330C each associated with a corresponding notch 1325A-1325C. Each hook 1330A-1330C extends axially from the shutter facing side 1310B of the body 1305, generally aligning radially with an associated notch 1320A-1320C. Referring to FIG. 14, each hook 1330A-1330C is generally L-shaped, including an axial arm portion 1405 extending distally from the base member body 1305 and a radial arm portion 1410 extending radially inward from the distal end of the axial arm portion such that the radial arm portion extends over at least a portion of the notch opening 1325A-1325C. The hook 1330A-1330C further includes an open lateral end 1415 and a closed lateral end 1420 (created by a lateral side wall). With this configuration, the hook 1330A-1330C defines an opened slot configured to receive the locking tab disposed on the shutter assembly 1210 via the open lateral end 1415 defined by the hook. The closed lateral end 1420 serves as a stop, preventing rotation of the locking tab within the hook (and thus the rotation of the shutter assembly) beyond the closed lateral end. That is, once the locking tab of the shutter assembly 1210 is positioned within the hooks 1330A-1330C, the locking tabs is seated, with the hooks capturing the shutter assembly to the base member 1205.
Referring to FIGS. 15A-15E, the shutter assembly 1210 includes a shutter portion 1505 and an eyecup portion 1510 coupled (e.g., mounted) thereto. The shutter portion 1505 includes a housing 1515 defining a first or forward side or end 1520A that couples to the base member 1205 and a second or rearward side or end 1520B that couples to the eyecup 1510. The housing 1515 may be generally annular, with an interior surface 1522 of the housing defining an opening or channel 1525. The housing 1515 may taper in the rearward direction such that the diameter of the channel 1525 along the forward side 1520A is greater than the diameter of the channel 1525 along the rearward side 1520B (e.g., the housing may be generally frustoconical). The housing 1515 further includes an elongated slot 1527 disposed along the housing rearward side 1520B and generally aligned with a shutter mechanism disposed within the housing (discussed in greater detail below).
As mentioned above, a plurality of locking elements or tabs, configured to mate with the hooks 1330A-1330D on the base member 1205, may be disposed at desired angular locations about the body outer surface 1532. In the illustrated embodiment, the housing 1515 includes three locking tabs 1530A, 1530B, 1530C, each extending radially from the body outer surface 1532 proximate the forward end 1520A of the housing 1515, the tabs being angularly spaced to align with a corresponding hooks 1330A-1330C on the base member 1205. Referring to FIG. 15E, each locking tab 1530A-1530C includes a generally horizontal member including a leading edge portion 1535 and an angled or ramped edge portion 1540. The locking tab 1530A, 1530B, 1530C further includes a generally vertical member 1545 disposed proximate the ramped edge portion 1540. In operation, the leading edge portion 1535 enters the slot formed by the hook 1330A-1330C during coupling of the shutter assembly 1210 to the base member 1205. This, in turn, enables the shutter assembly to be selectively coupled to the base member (discussed in greater detail below).
The eyecup portion 1510 is configured operable to shield out ambient light. In an embodiment, the eyecup portion 1510 includes an eyecup with a base section 1546 connected to the rearward end 1520B of the housing 1515 and a rim section 1547 extending rearward from the base section. The base section 1546 may be generally frustoconical. The eyecup 1547 may be a solid wall formed of light-blocking material that surrounds surrounding the aperture 1610 (FIG. 16). By way of example, the eyecup may be formed of rigid plastic or may be formed of flexible material (elastomers, rubber, etc.). As shown, the eyecup may be generally concave, initially curving inward, then curving outward along its rearward (user facing) end 1548. The rearward end 1548 of the rim section 1547 may contoured to snugly engage the orbit of the eye. With this configuration, placing the eye against the rim section 1547 permits the eyecup to enclose the eye, preventing the travel of light therethrough.
Referring to FIG. 16, a wall 1605 is disposed within the housing 1515 proximate housing rearward side 1520B. The wall 1605 includes an aperture 1610 possessing a diameter less than the diameter of the housing channel 1525. As illustrated, the aperture 1610 may possess a generally oval shape. The shutter assembly 1210 houses a shutter mechanism operable to control the amount of light passing through the housing 1515 by selectively covering the aperture 1610. Referring to FIG. 15B, the shutter mechanism includes a fixed shield 1550 and a repositionable shield or diaphragm 1555. The fixed shield 1550 may be a generally semi-annular (i.e., C-shaped) planar member extending radially inward from the interior surface 1522 of the housing 1515. The fixed shield 1550, moreover, extends angularly about a limited portion of the interior channel 1525 of the body. By way of example, the fixed shield may extend about 90° about the shutter channel 1525. With this configuration, the fixed shield may partially block the interior channel 1610. In operation, the fixed shield 1550 functions as a support for the repositionable shield 1555, supporting the repositionable shield in its closed position and guiding the repositionable shield as it moves from its closed position to its opened position.
The repositionable shield 1555, which cooperates with the fixed shield to permit selectively viewing through the lens of the peephole, includes a cover and an actuator in communication with the cover such that engaging the actuator reorients the cover respect to the housing 1515 (and thus the aperture 1610). In the embodiment illustrated in FIG. 16, the repositionable shield 1555 includes a generally semicircular cover or disc portion 1625 and an actuator arm or lever portion 1630 extending outward from the upper area of the cover portion. The disc portion 1625, which may be generally planar, possesses dimensions larger than those of the aperture 1610; consequently, when aligned with the aperture, the disc portion substantially or completely covers the aperture to prevent the passage of light through the housing 1515. The repositionable shield 1555 is pivotally coupled to the housing wall 1605 via a pivot post 1635 extending axially (along the housing or channel axis) from the forward (base-facing) surface of the wall and disposed at an intermediate location along the actuator arm 1630. The disc 1625 possesses a thickness that is slightly less than the width of the slot 1527 formed into the housing 1515. Accordingly, as the disc 1625 travels through the slot, it substantially blocks light, preventing light from entering the housing 1515 via the slot 1527.
A first stop member or rib 1640 extends from the forward surface 1620 of the housing wall 1605. The first stop member engages the disc 1625, preventing its rotation in a first direction (e.g., clockwise from the viewpoint of FIG. 16) beyond a predetermined angular position. By way of example, the stop member prevents over rotation of the disc 1625 when rotated to its closed position, thereby ensuring the disc blocks the aperture in its closed position). Additionally, the disc 1625 may include a second stop member 1645 extending from its forward side. The second stop member 1645 is configured to prevent over rotation of the disc in a second direction (e.g., counterclockwise from the viewpoint of FIG. 16). By way of example, the second stop member 1645 engages the interior surface 1522 of the housing 1515 proximate the slot 1527 to prevent the disc from completely passing through the slot and out of the housing. As illustrated, the stop members 1640, 1645 may be in the form of a generally elongated boss.
With this configuration, applying a downward force to the actuator 1630 (indicated by arrow F) rotates the disc 1625 (indicated by arrow R) out of alignment with the aperture 1610, permitting the passage of light through the shutter assembly 1210 and allowing a viewer to see through the security cover 1200. The user may rotate the disc until the second stop member 1645 engages the housing 1515. The repositionable shield 1555 configuration is eccentrically weighted such that simply releasing the actuator 1630 permits gravity to rotate the disc 1625 back to its closed position, in which it is aligned with the aperture 1610. Alternatively, applying an opposite (upward) force rotates the disc 1625 (clockwise from the viewpoint of FIG. 16) until the disc engages the first stop member 1640, positioning the repositionable shield 1555 back to its normal, closed position. It should be understood that while the shutter assembly is illustrated as a unitary (one-piece) structure, in other embodiments, the disc portion 1625 and the actuator portion 1630 may be separate components in communication with each other.
With the above configuration, the fixed shield 1550 and the repositionable shield 1555 cooperate to function as an aperture stop that controls the field of view of through the shutter assembly 1210. In a sense, the shutter mechanism functions as a field stop, being repositionable to selectively block the aperture 1610 of the housing 1515 and, consequently, to prevent the passage of light therethrough (i.e., the shutter mechanism blocks the view of a user looking through the shutter assembly via the eyecup 1510).
The operation of the device is explained with reference to FIGS. 17A and 17B. Initially, the base member 1205 is aligned with a peephole 1705 on a door 1710 such that the base member is generally coaxial with the peephole viewing lens. The base member 1205 is secured to the door (e.g., by removing releasing paper and pressing the base member against the surface of the door). Once the base member 1205 is secured to the door, the shutter assembly is coupled to the base member. Specifically, the shutter assembly 1210 is aligned with the base member 1205 and rotationally oriented to position the locking tabs 1530A, 1530B, 1530C adjacent the hook openings 1415. The shutter assembly 1210 is urged axially onto the base member 1205, and then rotated (e.g., rotated clockwise from the viewpoint of FIG. 17B) such that the locking tabs 1530A-1530C slide under the hooks 1330A-1330C. To remove the shutter assembly 1210, the process is reversed, with the shutter assembly being rotated in an opposite direction (e.g., counterclockwise) until the locking tabs 1530A-1530C clear the hooks 1330A-1330C. Once clear, the shutter member 1210 is drawn away from the base member, disengaging/decoupling the components.
In operation, the device 1200 begins in its normal, closed position, in which the repositionable shield 1555 cooperates with the fixed shield 1550 to cover the aperture 1610 in the housing 1515. To securely view objects through the peephole, the user places an eye against the eyecup 1510, and then pivots the actuator 1630 to place the device in its viewing position. Specifically, the actuator 1630 is pivoted to drive the disc 1625 radially outward such that the disc passes through the slot 1527 and partially or completely clears (is no longer aligned with) the aperture 1610. As noted above, the disc 1625 may be rotated until the second stop member 1645 engages the housing wall proximate the slot 1527. Thus, in its normal position, the disc 1625 may be completely housed within the housing. In the viewing position, the disc 1625 extends partly out of the housing 1515 through the slot 1527.
In its viewing position, the viewer can now see through the security device 1200 and the peephole 1705. The repositionable shield 1555 (and, optionally, the actuator 1630) possesses a thickness that is slightly less than the width of the slot 1527; consequently, it prevents the penetration of light into the housing 1515 via slot. Once viewing is complete, the user simply releases the actuator 1630, allowing gravity to return the shield 1555 to its normal, closed position. Alternatively, the user may manually rotate the actuator 1635 in a reverse direction, which pivots the repositionable shield 1555 back to its normal, closed position. The user may now remove the eye from the eyecup 1510.
FIGS. 18A and 18B illustrate a security device in accordance with another aspect of the invention. As illustrated, the device 1800 includes a base member portion 1805 and an elongated shaft portion 1810 extending distally from the door-facing side 1815 of the base member. The shaft 1810 is a hollow right cylinder defining a central channel 1820. The base member portion 1805 includes the same structure as described above (FIG. 13). Similarly, the shutter assembly 1210 includes the same structure as that described above (FIGS. 15 and 16). With this configuration, the device 1800 itself functions as a door viewer or peephole, with the shaft 1810 extending through the transverse dimension of the door (e.g., the device 1800 may be used to retrofit an existing peephole). While the integrated peephole design is illustrated without lenses, it should be understood that the lenses (e.g., a system of wide-angled lenses) may be housed in the shaft to increase the viewing angle of area along the exterior surface of the door. While not illustrated, it should be understood that the hollow shaft may include a lens system, i.e., one or more lenses operable to provide a wider field of view than when no lens is present.
FIG. 19 illustrates a security cover for a door viewer in accordance with another embodiment of the invention. In this embodiment, the security cover assembly 1900 accommodates users of various heights, e.g., enabling viewer shorter than the peephole height (such as a child) to look through a peephole 1705. As shown, the assembly 1900 includes a periscope 1905 and a shutter assembly 1910 similar to that described above. The periscope 1905 includes a first L-shaped member or tube 1915 including a short arm 1920A and a long arm 1920B, as well as a second L-shaped member or tube 1925 similarly including a short arm 1930A and a long arm 1930B. The L-shaped members 1915, 1925 are generally hollow defining first 1932A and second 1932B L-shaped channels, respectively. The L-shaped members 1915, 1925 are telescopically coupled such that the long arm 1930B of the second member 1925 slides within the long arm 1920B of the first member 1915, axially sliding relative to the first member. With this configuration, the overall length of the periscope 1905 may be selectively adjusted (indicated by arrow T) by axially repositioning the second member 1925 with respect to the first member 1915.
The periscope further includes a fastener 1935 operable to secure the position of the second member 1925 with respect to the first member 1915. By way of example, the fastener 1935 may include a threaded bolt that passes through the first member 1915 to frictionally engage the second member 1925, thereby prevent the sliding of the second member with respect to the first member. In other embodiments, the fastener 1935 may be a spring biased tab (e.g., a valco tab) disposed on the second member 1925 that is configured to protrude through a series of axially aligned holes formed into the first member 1915 when aligned therewith.
Each of the first member 1915 and the second member 1925 may include one or more refractive or reflective elements. In an embodiment, the first member 1915 includes a first reflective or refractive element 1950A disposed along the bend of the first L-shaped channel 1932A and the second member 1925 includes a second reflective or refractive element 1950B disposed along the bend of the second L-shaped channel 1932B. With this configuration, the first refractive or reflective element 1950A is disposed generally aligned with (along first and second long arms) and generally parallel to the second refractive or reflective element 1950B. The refractive or reflective elements 1950A, 1950B may be in the form of a mirror (e.g., disposed at 45° angle), a prism or a combination thereof. With this configuration, the periscope 1905 directs the image viewed through the peephole 1705 out through the shutter assembly 1910. While two refractive or reflective elements are illustrated, it should be understood the members 1915, 1925 may include any arrangement (number and/or positioning) of prisms, mirrors, and lenses.
The assembly 1900 may further include a brace or bracket 1960 operable to secure the assembly to and or stably support the assembly on the door. The brace 1960 may include a coupling ring 1965 that engages the telescoping members 1915, 1925 and a T-shaped support 1970 that contacts the door 1710 to orient the long arms 1920B, 1930B generally parallel to the door surface. Either end of the periscope 1905, as well as the brace 1960, may be further adapted such that it may be releasably attached to the door 1710 (e.g., via adhesive, etc.).
In another embodiment, the short arms 1920A, 1930A and/or the long arms 1920B, 1930B could also include telescoping segments that are selectively extended or collapsed or extended to alter the distance (the horizontal distance) between the assembly 1900 and the door 1710.
In operation, the assembly 1900 is coupled to the door 1710 proximate a peephole 1705 by positioning the opening 1985 of the first member short arm 1920A over the peephole. The shutter assembly 1210, which may be similar to that described above, is coupled to the opening 1990 defined by second member short arm 1930A. The user may adjust the periscope 1905 by engaging the fastener 1935 to release the second member 1925. The second member 1925 may be moved axially such that it telescopes in/out of the first member 1915 until the desired height is achieved. Once the desired height is achieved, the user 1995 may again engage the fastener to secure the members 1915, 1925 together. Once secure, the user may operate the shutter assembly 1210 as described above.
In further embodiments of the present invention, a security cover for a door viewer can include an automatic shutter actuation mechanism in which the shutter assembly is automatically operated based upon pressure exerted upon an eye piece that is engaged by a viewer during use. For example, when a viewer decides to place his or her forehead against the eye piece such that the viewer's eye is aligned with the eye piece, the force or pressure applied by the viewer's forehead against the eye piece will automatically actuate the shutter assembly such that the shutter opens allowing the viewer to see through the shutter assembly and door viewer without any noticeable change of light on the opposite side. The automatic shutter actuation mechanism is further configured to automatically reset to an original position in which the shutter is closed (thus preventing viewing from the eye piece through the security cover and door viewer) upon release or removal of the force or pressure applied to the eye piece (e.g., the viewer moves his or her forehead away from engagement with the eye piece again, with no light change noticeable from outside).
The automatic shutter actuation mechanism can be configured in any suitable manner, such as via a mechanical mechanism or an electromechanical mechanism that couples structural components of the eye piece (and/or other components of the security cover) with the shutter assembly.
Example embodiments of an automatic shutter assembly mechanism are now described with references to FIGS. 20-26. In these example embodiments, the eye cup or eye piece and shutter mechanism utilized are substantially similar in design and operation as that previously described herein in relation to the embodiments of FIGS. 8-10C, with further modifications to the eye piece and shutter mechanism that renders automatic operation being described as follows.
Referring to FIGS. 20 and 21, a security cover 2000 includes an eye piece 2010 and an eye piece housing 2020 configured to telescopically receive the eye piece 2010 through an opening at a top end of the housing 2020. It is understood that the security cover 2000 is configured to couple with a door viewer and to a surface of a door in the same or similar manner as previously described in to embodiments of FIGS. 1-19 (e.g., via an adhesive and/or via any other suitable securing structure as previously described herein) so as to permit a viewer to peer through both the security cover and door viewer (e.g., a peephole) in order to facilitate viewing through a door.
The eye piece 2010 comprises an elongated, hollow (e.g., generally cylindrical) member having a configuration similar to the eyecup or eye shield embodiments previously described (e.g., eye shield 130 depicted in FIG. 1) so as to allow a viewer to peer or see through the eye piece 2010 in combination with the door viewer (i.e., to permit viewing through the peep hole secured within a door). The eye piece 2010 includes elongated ridge members or guides 2012 aligned along exterior surface portions of the eye piece 2010, where the guides 2012 are configured to be received within elongated slots or guide rails 2022 provided within the eye piece housing 2020 when the eye piece 2010 extends through the top end opening of the housing 2020. A radially eye cup 2014 is provided at a top end of the eye piece 2010 that is suitably contoured and configured to receive and engage with a portion of a viewer's forehead (e.g., around the viewer's eye socket) during operation of the security cover 2000 and allow no change of light to be transferred from viewer side to the outside.
The security cover 2000 further includes a housing 800 and annular plate 820 having features substantially similar to those described for the embodiment of FIGS. 8-10C (i.e., the annular plate 820 includes radial slots that correspond and engage with the follower pins on the housing 800 to facilitate movement of blades of the housing 800 as previously described herein). The housing 800 is configured to receive the annular plate 820 and connect with the eye piece housing 2010 such that the security cover 2000 has an assembled configuration as depicted in FIG. 26.
The annular plate 820 further includes a central hub 2030 that extends toward the eye piece 2010 when assembled within housing 800. The central hub 2030 includes a plurality of curved and helically shaped grooves 2032 aligned along exterior surface portions and in a lengthwise direction of the central hub 2030. The grooves 2032 are suitably dimensioned and arranged along the hub 2030 to engage with corresponding curved or helically shaped teeth 2016 disposed along interior surface portions of the eye piece 2010.
In operation, the eye piece 2010 is moved within housing 2020 toward the annular plate 820 such that the teeth 2016 engage with the grooves 2032 on the hub 2030 of the annular plate 820. The curvature of the helically shaped teeth 2016 and grooves 2032 results in rotational movement in a first rotational direction of the annular plate 820 within the housing 800 when the eye piece 2010 is moved within housing 2020 in a direction toward the annular plate 820. This first rotational movement causes actuation of the shutter assembly to an open position in a manner as described in relation to FIGS. 8-10C so as to permit a viewer to see through the security cover 2000 and the door viewer to which the security cover 2000 is coupled. In addition, movement of the eye piece 2010 within the housing 2020 in a direction away from the annular plate 820 causes rotational movement of the annular plate 820 within the housing 800 in a second rotational direction that is opposite the first rotational direction. Movement of the annular plate 820 in the second rotational direction causes actuation of the shutter assembly to a closed position as described in relation to FIGS. 8-10C that prevents or significantly inhibits viewing through the cover device 2000 and any light entering from viewer side into the security cover during operation.
A biasing member can further be provided within the security cover 2000 to bias the eye piece 2010 to a position away from the annular plate 820, with the shutter assembly being in a closed position in such biased orientation of the eye piece 2010. Referring to FIGS. 22-25, the security cover 2000 is slightly modified to include structure that facilitates such biasing of the eye piece 2010-1 within the housing 2020-1. In particular, the housing 2020-1 is modified to be slightly elongated in relation to housing 2020 (shown in FIGS. 20, 21 and 26) so as to include a chamber 2042 defined therein that is configured to receive and retain a biasing member in the form of a coil spring 2040 while allowing a portion of the eye piece 2010-1 to telescopically move through the chamber 2042 and within housing 2020-1. In this embodiment, the housing 2020-1 is further slightly modified so as to house the annular plate 820 and housing 800 as depicted in FIGS. 24 and 25 (and in contrast to the embodiment of FIGS. 21, 22 and 26, in which housing 800 couples with but is not entirely received within eye piece housing 2020).
The eye piece 2010-1 is also slightly modified in relation to eye piece 2010 (as shown in FIGS. 21, 22 and 26) and includes a flange 2011 extending radially from and disposed near the upper end of the eye piece 2010-1. The eye piece 2010-1 is disposed within the housing 2020 such that the flange 2011 and spring 2040 are both located within the chamber 2042 (see, e.g., FIG. 24) with the spring 2040 being further positioned between the flange 2011 and a lower wall of the chamber 2042 so as to bias the eye piece 2010 in a direction away from the annular plate 820 and outward from the housing 2020 (as shown in FIG. 24). However, the eye piece flange 2011 is bound within the chamber 2042 (since the flange 2011 cannot pass beyond an upper wall of the chamber 2042) so as to limit a distance at which the eye piece 2010-1 can move outward from the housing 2020. Any suitable methods and structural design features can be utilized to assemble eye piece 2010-1 in relation to housing 2020-1 such that the eye piece flange 2011 is bound within the chamber 2042.
Operation of the security cover 2000 is now described with reference to FIGS. 22-25. In its original orientation in which no force or pressure is applied to the eye piece 2010-1 (as shown in FIG. 24), the eye piece 2010-1 is biased by the spring 2040 outward from the housing 2020-1 and away from the annular plate 820 such that the flange 2011 engages with an upper wall portion of the chamber 2042. When a force or pressure is applied to the eye piece 2010-1 that overcomes the biasing force of the spring 2040 (e.g., a viewer places his or her forehead against the eye cup 2014 to enable viewing through the door viewer), the eye piece 2010-1 is moved within the housing 2020-1 and toward the annular plate 820 causing engagement of teeth 2016 with grooves 2032 and corresponding rotational movement of the annular plate 820 within housing 800 in the first rotational direction (as depicted in FIG. 25, with arrows showing movements of the eye piece 2010-1 and annular plate 820). The rotational movement of the annular plate 820 in the first rotational direction further results in actuation of the shutter assembly to open the shutter allowing the viewer to peer through the security cover 2000 and door viewer without being noticeable from outside the door. When the force or pressure applied to the eye piece 2010-1 is removed or withdrawn (e.g., the viewer removes his or her forehead from engagement with the eye cup 2014), the bias of the spring 2040 moves the eye piece 2010-1 outward from the housing 2020-1 and back to its original position (as depicted in FIG. 24), which in turn causes rotational movement of the annular plate 820 in the second rotational direction (due to the engagement between teeth 2016 and grooves 2032) and actuation of the shutter assembly to close the shutter (thus preventing viewing through the security cover from the eye piece and any noticeable light change from outside the door).
Thus, the embodiments of FIGS. 20-26 facilitate an automatic shutter mechanism that facilitates opening and closing of the shutter automatically in response to a user engaging a portion of the security cover (e.g., the eye piece).
While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof. For example, the shutter mechanism may include a gear system in which the first shutter member includes teeth that mesh with corresponding teeth on the second shutter member. Additionally, a shutter system may be incorporated into the eyecup portion. By way of example, the eyecup portion may be formed of generally resilient material and may include a generally resilient, internal diaphragm in communication with the rim 1547. The diaphragm includes generally resilient flaps or segments angularly spaced about the aperture (e.g., each flap may possess a generally triangular shape). The flaps are configured to rotate from a first or closed position in which the flaps are oriented generally orthogonal to eyecup channel (aperture) to a second position, in which the flaps are oriented generally parallel to the eyecup channel. Specifically, the diaphragm is configured such that, upon axial compression of the eyecup (e.g., when a user places an eye against the rim 1547 of the eyecup), the flaps are rotated forward from their closed position to their opened position.
Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. It is to be understood that terms such as “top”, “bottom”, “front”, “rear”, “side”, “height”, “length”, “width”, “upper”, “lower”, “interior”, “exterior”, and the like as may be used herein, merely describe points of reference and do not limit the present invention to any particular orientation or configuration.

## Claims

1. A security cover device for a door viewer inserted into a door, the security device comprising:
a housing configured to couple to the door with the door viewer;
an eyepiece movably coupled with the housing; and
a shutter assembly comprising:
one or more shutter members disposed within the housing, each shutter member being movable in response to movement of the eyepiece and also being configured to alter the amount of light passing through the housing; and
an actuator coupled with the eyepiece and each shutter member to move each shutter member with respect to the housing from a first position to a second position when the eyepiece is moved in a linear direction toward each shutter member and from the second position to the first position when the eyepiece is moved in a linear direction away from each shutter member, wherein the actuator effects radial and pivotal movement of each shutter member between the first and second positions such that each shutter member rotates about an axis that is parallel with a linear axis of movement of the eyepiece.

2. The security cover device of claim 1, wherein the actuator of the shutter assembly comprises:
an eyepiece housing that telescopically receives the eyepiece, wherein each of the eyepiece and eyepiece housing includes engaging structure that facilitates linear movement of the eyepiece toward and away from each shutter member.

3. The security cover of claim 2, wherein the actuator of the shutter assembly further comprises:
a plate including curved structure that corresponds with curved structure disposed on the eyepiece, wherein the linear movement of the eyepiece toward and away from each shutter member causes rotational movements of the plate in different rotational directions via engagement of the curved structure of the plate with the curved structure of the eyepiece.

4. The security cover of claim 3, wherein each shutter member is coupled with the plate such that the rotational movements of the plate in the different rotational directions causes radial and pivotal movements of the each shutter member to the first and second positions.

5. The security cover of claim 4, wherein the plate includes a plurality of slots an angularly spaced locations along the plate, and the shutter assembly includes a plurality of shutter members, each shutter member including a pin that is received within a corresponding slot of the plate to facilitate radial and pivotal movements of the shutter in response to the rotational movements of the plate.

6. The security cover of claim 1, wherein the shutter assembly further comprises a biasing member to bias the eyepiece in the linear direction away from each shutter member.

7. The security cover of claim 1, wherein the housing defines an aperture operable to permit passage of light through the housing;
in the first shutter position, each shutter member is oriented such that the shutter member is aligned with the aperture and prevents light from passing through the housing; and
in the second shutter position, each shutter member is oriented out of alignment with the aperture to permit the passage of light through the housing.