Release mechanism for locking hinge for multi-positioned ladder

Details Release mechanism for locking hinge for multi-positioned ladder Release mechanism for locking hinge for multi-positioned ladder

1986-11-21

1987-10-06

Silverberg, Fred

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Hinge

Including means to hold or retard hinged members against...

16331, 16344, 16349, 182163, E05D 1110

Patent

active

046973052

ABSTRACT:
An improved hinge for collapsible ladders which includes a depressable release mechanism operable by one hand, leaving the other hand free to make ladder adjustment. The improved hinge includes a guide shaft disposed within a tubular hub member which is journaled within hinge plates to which the ladder stringers are connected. A handle with locking pins is secured to one end of the guide shaft, with the other end of the guide shaft being secured to a depressable hinge release mechanism.

REFERENCES:
patent: 470516 (1892-03-01), Skeels
patent: 501406 (1893-07-01), Campbell
patent: 697294 (1902-04-01), Totman
patent: 745320 (1903-12-01), Bruno
patent: 796157 (1905-08-01), Skeels
patent: 1461952 (1923-07-01), Walchli
patent: 1633902 (1927-06-01), Olson et al.
patent: 1936508 (1933-11-01), Hanly et al.
patent: 2210803 (1940-08-01), Dunn
patent: 2647676 (1953-08-01), Napiecinski
patent: 2880920 (1959-04-01), Glessner
patent: 3692143 (1972-09-01), Kummerlin et al.
patent: 3811151 (1974-05-01), Kummerlin
patent: 4182431 (1980-01-01), Wing
patent: 4210224 (1980-07-01), Kummerlin et al.
patent: 4216844 (1980-08-01), Klafs
patent: 4371055 (1983-02-01), Ashton
patent: 4376470 (1983-03-01), Ashton
patent: 4403373 (1983-09-01), Kummerlin
patent: 4407045 (1983-10-01), Boothe
patent: 4566150 (1986-01-01), Boothe

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