Closure fasteners – Bolts – Sliding and swinging
Patent
1997-12-19
1999-04-06
Barrett, Suzanne Dino
Closure fasteners
Bolts
Sliding and swinging
16 82, 292290, 292DIG15, 292342, F05C 500
Patent
active
058907513
ABSTRACT:
A keyless floor mounted door lock of this invention has a horizontal rectangular frame with a rectangular opening therein having first and second sides and opposite ends. A first downwardly extending bar is secured to one of the sides of the frame and a second downwardly extending bar extends parallel thereto in spaced relation. A pivotal surface is located on the under side of the frame at the ends of the slot which is created by the space between the first and second bars. A stop plate has a size slightly smaller than the opening in the frame and is slidably mounted in the slot when in a vertical position, and has opposite sides and opposite ends. Hinge elements are located on one of the sides of the stop plate adjacent the ends, and have a tang element extending longitudinally from each end for engagement with a pivotal surface on the bottom face of the frame. The stop plate is held against pivotal movement with respect to the frame by the aforementioned bars when in a vertical position and when the stop plate has moved downwardly in the slot a distance sufficient for the tangs to move out of engagement with the pivotal surfaces.
REFERENCES:
patent: 2122312 (1938-06-01), Cassion
patent: 3805322 (1974-04-01), Serrano
patent: 4114936 (1978-09-01), Dominguez
patent: 4501444 (1985-02-01), Dominguez
patent: 4552395 (1985-11-01), Dominguez
patent: 4631776 (1986-12-01), King
patent: 4673203 (1987-06-01), Chezem
patent: 4797970 (1989-01-01), Charlton
patent: 5809613 (1998-09-01), Baines
Barrett Suzanne Dino
Grady Stephen
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