Source: https://patents.google.com/patent/US7630746B2/en
Timestamp: 2020-01-24 14:33:21
Document Index: 397887659

Matched Legal Cases: ['art 8', 'art 8', 'art 8', 'art 8', 'art 8', 'art 13', 'art 13', 'art 8', 'art 13', 'art 14', 'art 13', 'art 30', 'art 8', 'art 35']

US7630746B2 - Cover for portable device - Google Patents
Cover for portable device Download PDF
US7630746B2
US7630746B2 US11/617,747 US61774706A US7630746B2 US 7630746 B2 US7630746 B2 US 7630746B2 US 61774706 A US61774706 A US 61774706A US 7630746 B2 US7630746 B2 US 7630746B2
US11/617,747
US20080000929A1 (en
2006-06-28 Priority to US80599706P priority Critical
2006-12-29 Application filed by Sony Mobile Communications AB filed Critical Sony Mobile Communications AB
2006-12-29 Priority to US11/617,747 priority patent/US7630746B2/en
2007-02-08 Assigned to SONY ERICSSON MOBILE COMMUNICATIONS AB reassignment SONY ERICSSON MOBILE COMMUNICATIONS AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HOLMBERG, PER
2007-04-03 Assigned to SONY ERICSSON MOBILE COMMUNICATIONS AB reassignment SONY ERICSSON MOBILE COMMUNICATIONS AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HOLMBERG, PER
2007-11-20 Assigned to SONY ERICSSON MOBILE COMMUNICATIONS AB reassignment SONY ERICSSON MOBILE COMMUNICATIONS AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HOLMBERG, PER
2008-01-03 Publication of US20080000929A1 publication Critical patent/US20080000929A1/en
2009-12-08 Publication of US7630746B2 publication Critical patent/US7630746B2/en
2028-04-07 Adjusted expiration legal-status Critical
229920002803 Thermoplastic polyurethane Polymers 0 claims description 6
239000004433 Thermoplastic polyurethane Substances 0 claims description 3
210000000088 Lip Anatomy 0 description 27
239000011324 beads Substances 0 description 10
210000004379 Membranes Anatomy 0 description 5
239000004576 sand Substances 0 description 5
-1 silicon part Chemical group 0 description 3
206010003497 Asphyxia Diseases 0 description 1
229920001875 Ebonite Polymers 0 description 1
H04B1/3888—Arrangements for carrying or protecting transceivers
A cover for a portable device comprising: a main body, an opening provided in a resilient part (8) of the main body for insertion and removal of the portable device, wherein the opening is provided at one side, and with a shape comprising an upper lip (302) and a lower lip (303) extending along the whole width, and rounded corners being retracted along the longitudinal direction of the cover behind the front of the upper lip (302) and the front of the lower lip (303).
The invention relates to a water, dust and sand and chock resistant cover. Specifically, the invention relates to a cover for mobile telephones.
Today the increasing popularity of mobile phones has led to the requirement that mobile phones must be able to operate in different settings, such as in humid environment and the like. A user that takes part in an outdoor activity wants to be able to bring the portable device with him and that no harm comes to the mobile phone due to dust, sand, moisture or the like.
To this end, the cover comprises resilient, softer parts that may be deformed enabling the user to press underlying buttons and the like. It also comprises substantially non-resilient, harder parts to impart stability to the cover. Transparent parts may be provided to make a display and buttons visible. There may also be parts letting sound pass, letting in sounds to a microphone and letting out sounds from speaker elements. The cover is customized to fit snugly a particular model of the portable device.
Suitably, the resilient parts are made from silicone or thermoplastic elastomer TPE or thermoplastic urethane elastomer TPU or combinations thereof. The substantially non-resilient parts may be made from hard plastic. The transparent parts may be made from high gloss plastic, and some parts may be made from plastic or glass with optical quality for location in front of camera lenses. Instead of transparent parts, the cover may be printed to indicate texts and symbols of underlying buttons. Sound permeable membranes may be made from air/gas permeable materials that are non-permeable to water and liquids, such as materials from Gore-Tex™. All such materials are known as such.
There is also a requirement that it should be easy to move the device from the cover and insert it again, when desired. Some people use the cover when working in hazardous environments, while other people spend their leisure time where the portable device may be exposed to water, dust and sand etc. Typically, a user wants to remove the device from the cover when the situation permits.
Document U.S. Pat. No. B2, 6,980,777 discloses a protective enclosure for a mobile module. The walls define a module cavity. The cavity discloses an upper lip and a lower lip, wherein the lower lip is arranged to fold up against the side surfaces of the enclosure to close the enclosure. This enclosure is a construction that requires a plurality of after-treatment steps after the molding of the enclosure and presents a pretty poor seal against moisture and dust.
The present invention deals with the problem of arranging the opening so that it is easy to insert and remove a portable device from the cover. Also, when molding a silicon part with an opening with strong negative draft angles, the part will be deformed when being pulled off the core. During this decoring the material is not yet completely cured, and the deformation should be as small as possible to avoid any permanent deformation. A permanent distortion can cause a bad fit to an adjacent part, e.g. a cap, in the final assembly.
Further, if the silicon part is a cover for a mobile telephone, it will be quite hard to take the phone in and out of the cover with a normal opening, due to the strangulation of the phone that will occur when taking it out. Also, after taking the phone in and out of the cover a number of times, the opening will be deformed causing bad sealing.
It is therefore an object of the invention to provide a cover with an improved long lasting seal against dust, water, sand and the like.
It is additionally an object of the present invention to provide a cover for a mobile phone that is simplified to manufacture.
Furthermore, an object of the invention is to provide a cover that does not deform during the manufacturing of the same.
The invention relates to a water, dust, sand and chock resistant cover for a portable device, such as a mobile telephone. The device may be used without removing it from the cover.
For this reason, the cover is provided with a cap with a tight seal. The cap may be put on and off with a snapping action.
The present invention provides a cover for a portable device comprising: a main body, an opening provided in a resilient part of the main body for insertion and removal of the portable device, wherein the opening is provided at one side, and with a shape comprising an upper lip and a lower lip extending along the whole width, and rounded corners being retracted along the longitudinal direction of the cover behind the front of the upper lip and the front of the lower lip.
In an embodiment of the invention the cover comprises an opening that is provided at a short side of the cover. Furthermore, the cover according to the invention may comprise a main body that comprises resilient parts and substantially non-resilient parts.
The invention may further provide a cover wherein the resilient parts are made of silicone or thermoplastic elastomer TPE or thermoplastic urethane elastomer TPU or a combination thereof.
In addition the resilient parts of the cover may be molded.
In a further embodiment the upper lip is curve-shaped.
In an embodiment of the present invention the lower lip is curve-shaped.
Preferably, the rounded corners are arranged to be retracted a distance, D, along the longitudinal direction of the cover behind the upper lip and the lower lip, D being in the range between 1-30 mm.
Suitably, the rounded corners, being retracted along the longitudinal direction of the cover behind the upper lip and the lower lip, are arranged to form a half circle or an elliptical or a similar rounded shape.
The above and further features, advantages and benefits of the present invention will be apparent upon consideration of the following detailed description. The detailed description is to be taken in conjunction with the accompanying drawings, in which the same reference characters and figures refer to the same components or method steps throughout, and in which:
FIG. 1 is a perspective view partly in cross section of the cover with the portable device inserted,
FIG. 2 is a perspective view of the cover without device and without cap,
FIG. 3 is a longitudinal cross section of the cover with an inserted device,
FIG. 4 is a longitudinal cross section of the cover without device,
FIG. 5 is a perspective view of the rear of the cover,
FIG. 6 is a transverse cross section of the cover with an inserted portable device,
FIG. 7 is a transverse cross section of the cover without device,
FIG. 8 is a longitudinal section of the cover without device,
FIG. 9 is a perspective view of the cover looking into an opening,
FIG. 10 is a perspective view of the cover with an inserted device;
FIG. 11 is a perspective view of the cover without the device; and
FIG. 12 is an enlarged cross sectional view of the opening of the cover with a cap arranged over the opening.
In the figures the substantially non-resilient parts appear as darker, while the resilient parts are shown with a lighter shade. Referring to FIG. 1 and FIG. 2, a cover containing a portable device 10 is shown. The cover comprises a cap 1 of substantially non-resilient material closed over an opening 3 of the main body 2 of the cover at the left of FIGS. 1, 3 and 4. Referring to FIG. 2, the opening 3 is preferably arranged at the smallest side so that the sealing length, Ls, is as small as possible.
The cap 1 is substantially smooth on the inside and is of a material that is less resilient than the cover in order to enhance the stability of the cover, e.g. hard plastic, hard rubber or the like. A sound hole 4 is also visible. An air permeable membrane (not shown) may be arranged at the sound hole in order to keep the cover waterproof. When a portable device 10, such as a mobile telephone with buttons, is inserted the situation is as shown in FIG. 1 and FIG. 3. The portable device 10 supports a resilient part 8 around the opening 3 from the inside, thereby providing an inner seal at areas 7 around the whole opening 3. The resilient part around the opening is self-centering against the portable device 10, e.g. the edges of resilient part are tapering towards a center axis of the cover thereby directing the portable device 10 to a centered position. By directing the portable device 10 into a centered position the resilient part 8 of the cover is strengthened and the seal is improved.
Referring to FIG. 3, the so called inner seal 7, the white line along the resilient part of the main body, is shown. In the figure the tapered shape of the resilient part is clearly disclosed and as can be seen the inner seal is formed corresponding to the tapering part of the main body of the cover. As can be seen in FIG. 3 the tapering part of the main body is formed around the bottom of the portable device 10 and one side of the main body is formed in a shape to provide space 9 for keys of the portable device 10.
The outer surface of the resilient part 8 around the opening is provided with at least one, preferably two, beads 5 and 6. It should here be understood that the number of beads may vary due to size of the cover, preference or the like. The outer bead 5 provides the main seal, and the somewhat smaller bead, closer to the opening, provides a secondary seal 6. In an embodiment of the invention the beads are the same size. When the cap is attached to the cover, the beads are compressed to form tight seals, shown in the figures as grey areas on the beads. Alternatively, the cap may be provided with inner recesses to accommodate the beads 5 and 6, but such recesses are not necessary. It should here be noted that the surface of the resilient part 8 may instead be arranged with no beads rendering a smooth surface wherein in the cap 1 is press fitted over the resilient part.
In the illustrated example as shown in FIG. 3, the resilient part 8 of the main body forms an upper lip and a lower lip surrounding the opening 3. The interior of the upper and the lower lip has a curved shape. However, in an embodiment of the invention the interior as well as the exterior of the lips have a substantially planar shape, resulting in the use of a cap with corresponding interior.
Furthermore, a shoulder 11, 12 is arranged on the main body of the cover to form a stop lip for each edge of the cap 1 to press against in order to form tight seals between the main body of the cover 2 and the cap 1, enhancing the seal between the cap 1 and the main body 2 of the cover.
Referring to FIG. 4, in an embodiment of the invention the interior of the cover is provided with protruding longitudinal ribs 20. Theses ribs are arranged in order to facilitate the movement of the portable device 10 relative the main body of the cover as well as fixating the portable device in relation to the cover. Referring to FIG. 6, in the illustrated embodiment, the cover is provided with a number of ribs 201-209 projecting on the inside of the cover. Next to the ribs small gaps or channels are formed allowing air to flow in and out of the cover as the portable device is pulled out or pushed in, respectively. The ribs also reinforce the cover, even though it is not their primary function. In order to decrease the friction the ribs must be arranged to let flow of the air pass between the cover and the mobile phone. The ribs are extending in a longitudinal direction of the cover, i.e. in parallel to the insertion direction of the mobile device. In the illustrated embodiment the ribs extend substantially along the whole length of the cover.
Preferably, at each side, there are two ribs 201, 202 in the left upper corner as well as the right upper corner 203, 204, i.e. towards the side with the keypad, in case of a cover for a mobile telephone, one rib 205 close to the left lower corner, one rib 206 close to the right lower corner and four ribs 209 at the bottom flat side (shown in FIG. 7 and FIG. 9). The placements of the ribs are made in order to avoid ribs in contact with keys of a mobile phone as well as reinforcing said cover. Hence, the placements of the ribs are based on the portable device aimed to be using the cover. In the illustrated example the rib 201 is placed in a corner forcing the portable device downwards, rendering a small space for the keypad of the portable device.
In the illustrated embodiment shown in FIG. 8, a rib 207 is shown. The rib 207 extends partially along the inside of the cover. These (a similar one is arranged on the side not shown) ribs 207 are arranged on the cover to stabilize the portable device sideways in the cover suitable for an intended model of the portable device.
In an embodiment of the present invention the ribs 201-206 placed in the corners are larger, i.e. protruding more from the cover, than the other ribs 207, 209 extending on a flat surface of the cover.
The ribs are mainly provided on the resilient parts since the non-resilient parts will not deform and be sucked against the device. It should also be noted that the ribs facilitate the insertion of the portable device wherein the air that is compressed by the portable device passes between the cover and the portable device.
Referring back to FIG. 2, in an embodiment of the invention a connection part 13 is arranged on the cover. The connection part 13 comprises a protruding section 14 arranged to receive a recess in the cap in order to connect the cap to the cover. The connection part may also comprise a recess 15 that corresponds to a protruding part arranged on the resilient part 8 in order to secure the connection part 13 to the cover 2. The connection part also provides an extra sealing edge surface between the cap and the cover 2. In FIG. 5 the cap 1 is shown in a mounted state on the cover, i.e. snapped on the protruding part 14 of the connection part 13. Alternatively, the cap may be held on the cover by means of hooks or clamps etcetera.
Furthermore, in FIG. 5 a part 30 containing a sound membrane for letting out sound from the portable device is shown. The membrane is an air permeable membrane in order to seal off the portable device from the surrounding dust and the like, and at the same time letting out the sound.
For using the cover, the cap 1 is taken off and the portable device is slid into the cover through the opening 3. Thereafter, the cap 1 is pressed on the resilient part 8 of the cover providing an inner seal 7 as well as at least one outer seal due to the contact area of the bead.
In FIG. 10 a portable device 10 is indicated with an even darker shade as seen through the opening 3. The opening is supposed to be covered by a cap, as shown in FIG. 12.
As may be seen from the FIGS. 10-12, the opening 3 has a mouth-like shape with one upper lip 302 and one lower lip 303 extending over the whole width of the cover. At the corners, i.e. at the short sides of the cover, the opening is provided with a rounded shape 301 extending a distance, D, along the longitudinal direction of the cover. The corners are retracted this distance behind the upper and lower lips. It should here be noted that in the illustrated example the corner is formed as a half circle, but the corner may vary with elliptical and similar rounded shapes from a small curved shape, i.e. D is relatively short, to a long U-shape, i.e. D is relatively long, just as long as the opening has rounded corners seen from the side of the cover. Another aspect of the distance D is that when the cover is decored from the mould during moulding the permanent deformation of the cover will be as small as possible.
The shape of the opening results in that the lips 302,303 may be parted to widen the opening without overstraining the material, even at the corners. This means that there is less deformation during decoring of the cover from the mould, resulting in very little permanent deformation, even if the cover is not completely cured during the decoring. Also, it is easy for a user to remove the portable device by parting the lips, or just gripping the phone with a thumb and a finger by the rounded shape 301 of the corners and pulling it outwards, thus slightly parting the upper and lower lips.
The small stress and deformation of the material increases the durability of the cover as well.
In the illustrated example as shown in FIG. 12, the interior of the upper 302 and lower lip 303 has a curved shape. However, in an embodiment of the invention the interior as well as the exterior of the lips have a substantially planar shape.
Referring back to FIG. 10, a substantially non-resilient protective part 35 is disclosed covering the display area of the mobile device in order to stabilize and protect the display of the mobile device.
When manufactured, first, plastic, such as thermoplastic, silicone or the like is pressed or sprayed into the cast forming the cover, i.e. inserted in a heated state in to the mould cast. When the plastic has cooled down, the part of the cast forming the exterior of the cover is removed revealing the exterior of the cover and the core of the cast, forming the interior of the cover, is removed as well. Due to the shape of the opening 3 the lips are just slightly parted with a minor stress on the rounded corners, resulting in a reduced permanent deformation comparing to a cover without an opening according to the invention.
The foregoing has described the principles, preferred embodiments and modes of operation of the present invention. However, the description should be regarded as illustrative rather than restrictive, and the invention should not be regarded as limited to the particular embodiments discussed above. It should therefore be appreciated that variations may be made in those embodiments by those skilled in the art without departing from the scope of the present invention as defined by the following claims.
1. A cover for a portable device comprising: a main body, an opening provided in a resilient part of the main body for insertion and removal of the portable device, wherein
the opening is provided at one side, and with a shape comprising an upper lip and a lower lip extending along the whole width, and rounded corners being retracted along the longitudinal direction of the cover behind the front of the upper lip and the front of the lower lip; and
wherein the rounded corners are arranged to be retracted a distance, D, along the longitudinal direction of the cover behind the front of the upper lip and the front of the lower lip.
2. A cover according to claim 1, wherein the opening is provided at a short side of the cover.
3. A cover according to claim 1, wherein the main body comprises resilient parts and substantially non-resilient parts.
4. A cover according to claim 3, wherein the resilient parts are made of silicone or thermoplastic elastomer TPE or thermoplastic urethane elastomer TPU or a combination thereof.
5. A cover according to claim 3, wherein the resilient parts of the cover are molded.
6. A cover according to claim 1, wherein the upper lip is curve-shaped.
7. A cover according to claim 1, wherein the lower lip is curve-shaped.
8. A cover according to claim 1, wherein D is in the range between 1-30 mm.
9. A cover according to claim 1, wherein the rounded corners, being retracted along the longitudinal direction of the cover behind the front of the upper lip and the front of the lower lip, are arranged to form a half circle or an elliptical shape.
10. A cover for a portable device comprising: a main body, an opening provided in a resilient part of the main body for insertion and removal of the portable device, wherein
the rounded corners, being retracted along the longitudinal direction of the cover behind the front of the upper lip and the front of the lower lip, are arranged to form a half circle or an elliptical shape.
US11/617,747 2006-06-28 2006-12-29 Cover for portable device Active 2028-04-07 US7630746B2 (en)
US80599706P true 2006-06-28 2006-06-28
US11/617,747 US7630746B2 (en) 2006-06-28 2006-12-29 Cover for portable device
PCT/EP2007/050473 WO2008000523A1 (en) 2006-06-28 2007-01-18 Cover for portable device
US20080000929A1 US20080000929A1 (en) 2008-01-03
US7630746B2 true US7630746B2 (en) 2009-12-08
ID=37964963
US11/617,747 Active 2028-04-07 US7630746B2 (en) 2006-06-28 2006-12-29 Cover for portable device
US (1) US7630746B2 (en)
WO (1) WO2008000523A1 (en)
US20100006468A1 (en) * 2008-07-11 2010-01-14 Fruitshop International Co., Ltd. Protection cover for portable product
US20100096284A1 (en) * 2008-06-27 2010-04-22 Steven Chi Vun Bau Protective case having a hybrid structure for portable handheld electronic devices
US20100147737A1 (en) * 2009-08-21 2010-06-17 Otter Products, Llc Protective cushion cover for an electronic device
US20110196689A1 (en) * 2007-08-01 2011-08-11 Takumi Otani Handheld terminal, method of dressing it up, and method of delivering dress-up data
US9737123B2 (en) 2015-08-04 2017-08-22 Catalyst Lifestyle Limited Waterproof case for electronic device
USD795089S1 (en) 2016-06-08 2017-08-22 Catalyst Lifestyle Limited Watch case
USD853878S1 (en) 2018-01-10 2019-07-16 Catalyst Lifestyle Limited Watch case
EP2858254A1 (en) * 2013-10-07 2015-04-08 Thule Organization Solutions, Inc. Protective case for an electronic device
WO2000051315A1 (en) 1999-02-24 2000-08-31 Moduleo Oy Mobile phone case
WO2000062509A1 (en) 1999-04-13 2000-10-19 Matsushita Electric Industrial Co., Ltd. Portable phone and method of forming waterproof case of the phone
WO2002003828A1 (en) 2000-07-10 2002-01-17 Moduleo Oy Casing for a mobile telephone
WO2002011161A2 (en) 2000-07-31 2002-02-07 Johan Kruger Protective cover
US20020136557A1 (en) * 2001-03-21 2002-09-26 Takashi Shimamura Waterproof case for portable device
WO2002088914A1 (en) 2001-04-30 2002-11-07 Nokia Corporation Enclosure for wireless communication device
EP1301011A2 (en) 2001-10-05 2003-04-09 Nokia Corporation User changeable electronic device/mobile phone covers and method
WO2003041288A2 (en) 2001-11-03 2003-05-15 Jean Goros Protective sleeve for small electronic devices
US20030111366A1 (en) 2001-12-14 2003-06-19 Enners Ryan S. Waterproof casing for Hewlettt-Packard Jornada portable personal computer
US6731913B2 (en) * 2002-01-30 2004-05-04 Nokia Corporation Elastomeric enclosure
US20040154941A1 (en) * 2003-02-06 2004-08-12 Montler Mike F. Flexible hygienic remote control enclosure
US20040203486A1 (en) 2002-07-31 2004-10-14 Robert Shepherd Smart pouch cover for mobile device
US20050116003A1 (en) * 2003-12-01 2005-06-02 Butler Michael R. Portable, waterproof case for storing items
2006-12-29 US US11/617,747 patent/US7630746B2/en active Active
2007-01-18 WO PCT/EP2007/050473 patent/WO2008000523A1/en active Application Filing
US6980777B2 (en) 2002-07-31 2005-12-27 Nokia Corporation Smart pouch cover for mobile device
Office Action mailed on Jun. 2, 2009 from related U.S. Appl. No. 11/617,746.
Office Action mailed on Jun. 2, 2009 from related U.S. Appl. No. 11/617,757.
US8245842B2 (en) * 2008-06-27 2012-08-21 Switcheasy Limited Protective case having a hybrid structure for portable handheld electronic devices
US9266664B2 (en) 2008-06-27 2016-02-23 Switcheasy Limited Protective case having a hybrid structure for portable handheld electronic devices
US7938260B2 (en) * 2008-07-11 2011-05-10 Fruitshop International Co., Ltd. Shock-absorbing protection cover for a portable product
US9993056B2 (en) 2015-08-04 2018-06-12 Catalyst Lifestyle Limited Waterproof case for electronic device
USD798744S1 (en) 2015-08-04 2017-10-03 Catalyst Lifestyle Limited Watch case
WO2008000523A1 (en) 2008-01-03
US20080000929A1 (en) 2008-01-03
USD575300S1 (en) 2008-08-19 Image for a digital camera
US6731913B2 (en) 2004-05-04 Elastomeric enclosure
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US9462099B2 (en) 2016-10-04 Mobile device case
US20060279942A1 (en) 2006-12-14 Portable electronic device
US20120031914A1 (en) 2012-02-09 Protecting case for a mobile phone
US20070081303A1 (en) 2007-04-12 Recess housing feature for computing devices
WO2002003828A1 (en) 2002-01-17 Casing for a mobile telephone
JP4263766B1 (en) 2009-05-13 Bar type portable terminal cover with elastic part
AU2014268838B2 (en) 2017-08-17 Waterproof protective case for an electronic device
CN102378585B (en) 2014-12-17 Electronic device cover and method of making same
US20050130721A1 (en) 2005-06-16 Interlocking cover for mobile terminals
KR20160144471A (en) 2016-12-16 Waterproof case
USD536298S1 (en) 2007-02-06 Tire
AT314192T (en) 2006-01-15 Molding with ventilation structure for included gases
2007-02-08 AS Assignment
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOLMBERG, PER;REEL/FRAME:018880/0582
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOLMBERG, PER;REEL/FRAME:019108/0625
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOLMBERG, PER;REEL/FRAME:020138/0973
2009-11-18 STCF Information on status: patent grant