Closure fasteners – Operators with knobs or handles
Patent
1981-03-30
1984-12-11
Holko, Thomas J.
Closure fasteners
Operators with knobs or handles
292DIG31, E05B 300, B64C 114
Patent
active
044874405
ABSTRACT:
An aircraft door latching bolt actuating mechanism in which inside and outside handles are provided to actuate a crank having connections with one or more door latching bolts. The outside handle comprises a T-shaped handle with oppositely extending hand-grip portions for two hand actuation, and which are pivoted for swinging movement between a generally flush retracted position in which the hand-grip portions serve to releasably latch the crank against movement to a bolt releasing position, and an extended non-latching position permitting movement of the crank to the bolt releasing position. The hand-grip portions are interconnected with a common actuating and equalizing member that is supported for rotation with the inside and outside handles, and also for independent reciprocal movements in opposite directions. A spring normally urges the actuating member in a direction to move the hand-grip portions into their retracted positions, and a cam is arranged to move the actuating member in the opposite direction and extend the hand-grip portions of the outside handle, when rotated by the inside handle. A finger receiving opening in one of the end grip portions of the outside handle enables movement of the hand-grip portions to their extended released positions and thus permits actuation of the crank to bolt releasing positions by means of the outside handle.
REFERENCES:
patent: 2104838 (1938-01-01), Leonard
patent: 2143127 (1939-01-01), Leonard
patent: 2234651 (1941-03-01), Pick
patent: 2498527 (1950-02-01), Castle
patent: 2721750 (1955-10-01), Rudis et al.
patent: 3051280 (1962-08-01), Bergman et al.
patent: 3528695 (1970-09-01), Peders
patent: 4199120 (1980-04-01), Bergman et al.
patent: 4268077 (1981-05-01), Bohleen et al.
Drawing of "Latch Handle Cabin Door", by Adams Rite Products, Inc., Glndale Calif., #D 80477 2330, 1 p., 3/16/1964.
Adams Rite Products, Inc.
Holko Thomas J.
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