Window lock apparatus

Details Window lock apparatus Window lock apparatus

1989-09-19

1990-07-24

Nicholson, Eric K.

Closure fasteners

Bolts

Swinging

292DIG47, 292283, 292DIG20, F05C 304

Patent

active

049430963

ABSTRACT:
A lock apparatus (10) for immobilizing a lower window sash (101) relative to a window sill (102) wherein the apparatus (10) comprises a pivoted bracket element (18) and a stationary bracket element (21) attached to the window sill (102) and window sash (101) and having aligned latch elements (19) and (22) which are dimensioned to receive an elongated bolt member (30) to lock the window sash (101) relative to the window sill (102).

REFERENCES:
patent: 730266 (1903-06-01), Hoyt
patent: 765172 (1904-07-01), Essig
patent: 1315568 (1919-09-01), Nelohammer
patent: 1471177 (1923-10-01), Lyon
patent: 1492768 (1924-05-01), Wallen
patent: 1834678 (1931-12-01), Bryant
patent: 1938258 (1933-12-01), Luneburg
patent: 2392906 (1946-01-01), Doyle
patent: 2504367 (1950-04-01), Willink
patent: 2652276 (1953-09-01), Cole
patent: 3135543 (1964-06-01), Ingalls
patent: 3591219 (1971-07-01), Graziosi
patent: 4042265 (1977-08-01), Chezem
patent: 4062578 (1977-12-01), Chen

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