Abstract:
A quick application magnetic door stop block, magnetically attaching to a door hinge plate to prevent the door from being closed and for holding the door in a fixed open position, the block providing a squared block with a strong magnet inset on an inner surface of the block, the magnet holding the block in place on the door frame hinge plate.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    None. 
       BACKGROUND OF THE INVENTION 
       [0002]    1. Field of Invention 
         [0003]    A quick application magnetic door stop block, magnetically attaching to a door hinge plate to prevent the door from being closed and for holding the door in a fixed open position, the block providing a squared block with a strong magnet inset on an inner surface of the block, the magnet holding the block in place on the door frame hinge plate. 
         [0004]    2. Description of Prior Art 
         [0005]    A preliminary review of prior art patents was conducted by the applicant which reveal prior art patents in a similar field or having similar use. However, the prior art inventions do not disclose the same or similar elements as the present door stop block, nor do they present the material components in a manner contemplated or anticipated in the prior art. 
         [0006]    Several door stops disclose some type of deformable wedge which is inserted into the space between the door and the door frame to prevent closure of the door. These door blocks or door stops are indicated in U.S. Pat. No. 8,458,958 to Cress, U.S. Pat. No. 4,878,267 to Roach, an integrated hinge pin door stop or U.S. Pat. No. 3,325,854 to Steigerwald, D323,976 to Barnes, and Patent Publication No. 2008/0079270 to Carlson. 
         [0007]    A slim profile device, disclosed in U.S. Pat. No. 8,727,404 to Martin, is a plate having a several magnets glued to a first surface and a foam layer glued to the first surface, comprising a laminated flat bar.  FIG. 4  shows the bar magnetically attached to the hinge plate of a door,  FIG. 5  showing the bar wedged between the door and the frame without any magnetic involvement, and  FIGS. 7A and 7B  show the plate magnetically attached to the strike plate over the latch portion of the door frame opposite the hinged side of the door. The device use is to prevent an automatic closure door from closing in an emergency situation, primarily used in fighting a fire. Another shaped door stop is disclosed in U.S. Publication No. 2014/0225385 to Millsap. That patent application discloses a block structure with a set of magnets on flat surface and another magnet on a perpendicular flat surface of the block. It has a somewhat rectangular structure with a cutout portion (curved) which is meant to adapt to a hinge pin and hasps with a set width which biases and fills the complete gap between the hinge pin and the edge of the door jamb. This acts as a wedge which is oriented on a horizontal axis. When installed, it is designed to maintain the door in a completely open position and does not allow for movement of the door to a partially open position. It is also magnetically attached to the hinge plates on both sides of the hinge,  FIG. 2 , instead of magnetically attaching to a single plate. 
       SUMMARY OF THE INVENTION 
       [0008]    Door stops are used to either hold a door in a selected open position or to prevent a door from complete closure, as noted in the prior art. Reasons for use include maintaining a door in a open position for safety purposes, such as a firefighter would use during a fire, for convenience to keep a door from closing when moving objects through a doorway, or to prevent an automatic door from closing or locking out someone who prefers immediate reentry without having to unlock a door. As noted in the prior art, using a type of wedge, either under the door or inserted somewhere within the closure side of the door has many different presentation, some by design and other by their utility and stated attachment to the door, frame or hinge. There are some which utilize a magnet within the door stop mechanism for stability or for blocking a particular engagement of door components. 
         [0009]    The present magnetic door stop is a simply block with a strong magnet imbedded within an inner surface providing a magnetic attachment to a door frame hinge plate, and a lift groove on an inner corner to accommodate disengagement of the block from the hinge plate. The block can be moved sideways to allow for a range opening of the door between a full open position and a partial opening of the door. It is preferred that the disclosed door stop be used in pairs to prevent incidental deformation of the door hinges or damage to the door or frame in the event an unusually aggressive force occurs on the door during use of the door stops. 
         [0000]    The primary objective of the invention is to provide 
     
    
     
       DESCRIPTION OF THE DRAWINGS 
         [0010]    The following drawings are submitted with this utility patent application. 
           [0011]      FIG. 1  is an inner surface perspective view of the magnetic stop block. 
           [0012]      FIG. 2  is a top perspective view of a door, door frame and door hinge with the magnetic door stop installed in an intended use. 
           [0013]      FIG. 3  is a sectional view along sectional lines  3 / 3  of  FIGS. 2 , indicating the magnetic door stop applied to the hinge plate on the door frame side of the door hinge. 
           [0014]      FIG. 4  is a sectional view along lines  4 / 4  of  FIG. 3 , indicating engagement of the imbedded magnet on the inner surface of the door stop block attaching to the door frame hinge plate. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0015]    A magnetic stop block  10  attaching to a hinge plate  202 ,  206  on a door  110  hung within a door frame  100  having a door jamb  102 , shown in  FIGS. 1-4  of the drawings, provides temporary blockage of the door from closing at a preferred open location, the stop block  10  comprising a block member  20  having an inner surface  22  within which is imbedded a strong magnet  30  having an outer surface  32  flush with the inner surface  22  of the block member  20 , the inner surface  22  providing a pry ridge  27  which is carved into a corner edge  26  of the inner surface  22 , the pry ridge  27  providing a location to insert finger tips to pry the block member  20  and disengage the strong magnet  30  from an applied hinge plate  202 ,  206 . The block member  20  further defines an outer contact edge  28  extending from an outside surface  24  of the block member  20 , which is exposed upon installation most proximally to an inner edge  112  of the  110  door. 
         [0016]    It is preferred that two stop blocks  10  be applied to two door hinges  200  on the same door, one high and one low, to prevent a door  110  from being forcibly bent or a hinge  200  on the door  110  from being deformed in the event and excessive force is applied to the door while the door stop  10  is in use, with two stop blocks  10  on two hinges  200  potentially avoiding damage or deformity better than a single stop block  10 . 
         [0017]    The stop block  10  is properly applied as depicted in  FIGS. 2-4 , with the outer surface  32  of the strong magnet  30  facing the metal hinge plate  202 ,  206 , preferably on the frame hinge plate  206 .  FIG. 2  clearly demonstrates the components of a standard door assembly to which the stop block  10  is applied, comprising a door frame  100 , an extended door jamb  102  and a swinging door  110 , with a hinge  200  defining a door hinge plate  202  extending an inner hinge member  204 , a frame hinge plate  206  extending an inner hinge member  208  and a hinge pin  205  inserted through the joined and aligned inner hinge members  204 ,  208 , forming the hinged connection.  FIG. 2  further discloses the preferred location of the stop block  10  relative to the frame hinge plate  206  and door frame  100 . As shown, the pry ridge  27  faces the hinge pin  205 , but does not contact the inner hinge member  208  and is preferably abutted against the door jamb  102 , allowing for the placement and removal of the stop block  10  leaving access to the pry ridge  27  for disengaging the strong magnet  30  from the frame hinge plate  206 . 
         [0018]    The block member  20  does not necessarily need to be square, although a square shape would be optimal for the disclosed purpose. It is preferred that the depth of the block member  20  be equal to the width of the door jamb  102  from the door frame  100 , as shown in  FIG. 3 , and that the width of the block member  20  is narrow enough to allow space between the hinge pin  205  and the pry ridge  27  of the corner edge  26 . Other pry ridges may be included in the block member  27  for other pry points to disengage the strong magnet  30  from the hinge plate  202 ,  206 , not shown. It is not recommended that the stop block  20  be installed on the door hinge plate  202  of the hinge  200 , which is a moving component of the door assembly during opening and closing of the door, as this installation has a tendency to dislodge or displace the stop block  10  more readily than would occur when the stop block  20  is applied to the stationary frame hinge plate  206  of the hinge  200 . 
         [0019]    While the stop block  10  has been particularly shown and described with reference to a preferred embodiment thereof, it will be understood by those skilled in the art that changes in form and detail may be made therein without departing from the spirit and scope of the invention.