Easily openable tubular latch

Details Easily openable tubular latch Easily openable tubular latch

1990-11-28

1991-06-04

Moore, Richard E.

Closure fasteners

Bolts

Sliding

E05C 116

Patent

active

050208365

ABSTRACT:
A tubular latch includes: a biasing lever pivotally mounted on a housing of the latch having an upper depression portion operatively pulled by a drag slide biased by a cam of a handle driving shaft, and having a lower forcing portion of the biasing lever operatively pulling a latch for opening the door, whereby upon a depression of a handle secured to the handle driving shaft at a small angle to pull the drag slide rearwardly to bias the upper depression portion of the lever about a lever pivot with a small stroke, the lower forcing portion below the upper depression portion will be biased with a greater stroke for fully retracting the latch for easily opening the door, without requiring a great rotating angle for depressing the handle.

REFERENCES:
patent: 2222411 (1940-11-01), Kaiser
patent: 2322040 (1943-06-01), Maruri
patent: 3141320 (1964-07-01), McConnell

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