Latch guard

Information

  • Patent Grant
  • 6698807
  • Patent Number
    6,698,807
  • Date Filed
    Tuesday, April 30, 2002
    22 years ago
  • Date Issued
    Tuesday, March 2, 2004
    20 years ago
  • Inventors
  • Examiners
    • Estremsky; Gary
    Agents
    • Sturm & Fix LLP
Abstract
A latch guard for covering a door latch opening in a door jamb. Covering the door latch opening in a door jamb enables a door to be opened easily without requiring opening of a door knob. The latch guard contains a C-shaped piece attached to a rectangular piece. The C-shaped piece fits into the door latch opening in a door jamb. The rectangular piece serves as a backing to the C-shaped piece, and the rectangular piece lies flat against a door jamb when the latch guard is installed in a door latch opening in a door jamb. The latch guard is easily installable and removable.
Description




CROSS-REFERENCE TO RELATED APPLICATIONS




Not Applicable




STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT




Not Applicable




REFERENCE TO MICROFICHE APPENDIX




Not Applicable




BACKGROUND OF THE INVENTION




1. Field of the Invention




This present invention relates to the field of door anti-latch devices, and more particularly to door anti-latch devices insertable into the door latch opening in a door jamb that are easily installable and easily removable.




2. Description of the Related Art




Door latch anti-locking devices are well known in the art. Typical door latch anti-locking devices are not easily installable and easily removable. As can be seen by reference to the following U.S. Pat. Nos. 6,082,790, and 2,726,892, the prior art is replete with myriad and diverse door latch anti-locking devices. U.S. Pat. No. 6,082,790, titled “Door Anti-Locking Device”, is an invention designed to provide a plate for covering a door striker plate on a door jamb to prevent a door from latching, but the invention is distinguished from the present invention by the lack of easy removability. The plate is screwed permanently to the door latch area. By contrast, the present invention is easily removable from a door striker plate after use. In addition, U.S. Pat. No. 2,726,892, titled “Safety Lock Clip”, is also an invention designed to serve as an anti-latch device for a door latch, but it also is not easily removable, and is screwed into place.




While all of the aforementioned prior art constructions are more than adequate for the basic purpose and function for which they have been specifically designed, they are uniformly deficient with respect to their failure to provide a simple, efficient, and practical easily installable and easily removable device insertable into the door latch opening in a door jamb. As a consequence of the foregoing situation, there has existed a longstanding need for a new and improved door latch guard, and the provision of such a construction is a stated objective of the present invention.




BRIEF SUMMARY OF THE INVENTION




Briefly stated, the present invention provides a door latch guard comprised of a rigid rectangular piece and a rigid C-shaped piece. The center of the C-shaped piece is attached to the center of the rectangular piece. The C-shaped piece fits securely into the door latch opening in a door jamb, thereby preventing a door latch from latching the door. The rectangular piece serves as a backing to the C-shaped piece, and the rectangular piece lies flat against a door jamb when the latch -guard is installed in a door latch opening in a door jamb. Preventing a door from latching allows groups such as maintenance personnel to keep a door from latching. This allow the maintenance personnel to easily enter and exit the door when frequent trips through the door are necessary.




The door latch guard may be made form material such as hose, plastic pipe, or plastic cup. Various methods may be used to manufacture the door latch guard, such as using a pop rivet to secure the C-shaped piece to the rectangular backing piece, or to create the entire door latch guard of a single molded plastic piece.











BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING




These and other attributes of the invention will become more clear upon a thorough study of the following description of the best mode for carrying out the invention, particularly when reviewed in conjunction with the drawings, wherein:





FIG. 1

is a perspective view of the present invention inserted into a door latch opening in a door jamb;





FIG. 2

is a side perspective view of the present invention displayed adjacent a door latch opening in a door jamb;





FIG. 3

is a side elevation view of the present invention immediately prior to being inserted into a door latch opening in a door jamb;





FIG. 4

is a side elevation view of the present invention with the C-shaped piece partially inserted into the door latch opening in a door jamb; and





FIG. 5

is a side elevation view of the present invention completely installed into the door latch opening in a door jamb.











DETAILED DESCRIPTION OF THE BEST MODE




As can be seen by reference to the drawings, and particular to

FIG. 1

, the latch guard that forms the basis of the present invention is designated generally by the reference number


10


. As seen in

FIG. 2

, the latch guard contains a rectangular plate


20


, and a C-shaped piece


30


attached to the rectangular plate


20


at the back of the C-shaped piece


32


.




The door latch guard


10


may be made from, for example, hose, plastic pipe, or plastic cup. In one embodiment, the C-shaped piece


30


of the door latch guard


10


is made from 1½ inch diameter plastic pipe, is ½ inch wide, and the rectangular piece


20


is 0.03 inches thick and 1¼ inches wide. The C-shaped piece


30


is secured to the rectangular piece


20


by, for example, a pop rivet. The latch guard


10


may also be formed from a single molded plastic piece.




In use, as seen in

FIG. 3

, the latch guard


10


is placed adjacent to a striker plate


42


in a door jamb


40


. As seen in

FIG. 4

, the C-shaped piece


30


is then placed into the opening


44


in the door jamb


40


. When the C-shaped piece


30


is entered into the door jamb


40


, the C-shaped piece


30


compresses inwardly. Then, as seen in

FIG. 5

, the C-shaped piece


30


expands into place within the opening


44


in the door jamb


40


. The latch guard


10


is locked into place, and will remain in the door jamb


40


until the user desires to remove the latch guard


10


. The latch guard


10


is useful to, for example, maintenance personnel who need to make multiple trips into a room, and must carry supplies. The latch guard


10


allows a door


50


to swing freely without the need to open the door


50


with the door knob


52


.




The user removes the latch guard


10


by the reverse of the process above used to install the latch guard


10


. As seen in

FIG. 5

, the latch guard


10


is initially in the installed position. The user pulls outwardly on the latch guard


10


until the C-shaped piece


30


compresses inwardly (FIG.


4


). Further pulling on the latch guard


10


results in the latch guard


10


being completely removed from the opening


44


in the door jamb


40


, as shown in FIG.


3


.




Although only an exemplary embodiment of the invention has been described in detail above, those skilled in the art will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the following claims.



Claims
  • 1. In a door having a door jamb, an opening formed into the door jamb, a striker plate fixed to the door jamb adjacent the opening, and door knob with latch movable to selectively engage the opening, the improvement comprising a latch guard having,a plate; a C-shaped member fixed to said plate; said C-shaped member movable to fit through the striker plate into the opening, said plate disposed against the striker plate over the opening, the door knob with latch movable against said plate, whereby the door swings freely open without engagement of the door knob.
US Referenced Citations (16)
Number Name Date Kind
969524 Condon Sep 1910 A
2726892 Zyndia et al. Dec 1955 A
2745690 Thornell May 1956 A
2760803 Solomon Aug 1956 A
3458227 Bryson et al. Jul 1969 A
3826526 Wepsala Jul 1974 A
3954238 Nivet May 1976 A
4159838 Wilzig et al. Jul 1979 A
4305611 Robins Dec 1981 A
4378948 Chrones Apr 1983 A
4453752 McKann Jun 1984 A
4834186 Ballard May 1989 A
5004279 Radcliff Apr 1991 A
5613718 Lin Mar 1997 A
6082790 Mossotti et al. Jul 2000 A
D435684 Gary Dec 2000 S