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2024年3月26日发(作者：block和inline的区别)

专利内容由知识产权出版社提供

专利名称：Flush-type door lock

发明人：Albert L. Pelcin

申请号：US05/903164

申请日：19780505

公开号：US04231597A

公开日：19801104

摘要：A flush mountable door lock includes a recessed body member, a lock bolt

slidably mounted on the body member, and a paddle-shaped operating handle for

moving the bolt. The handle is movable between nested and projected positions. A bolt

actuator extends from the handle into a receiving formation provided on the bolt for

drivingly interconnecting the handle and the bolt to effect retracting and extending

movements of the bolt when the handle is moved toward its projected and retracted

positions. A torsion coil spring is interposed between the body member and the handle,

and serves the several functions of biasing the handle toward its nested position,

maintaining play-free engagement between the handle and the body member when the

handle is nested, and maintaining a play-free driving connection between the handle and

the bolt when the handle is projected. A ball-spring detent system is interposed between

the body member and the bolt, and serves the several functions of assisting in effecting

final movement of the bolt to its extended and retracted positions as the bolt

approaches these positions, releasably retaining the bolt in its extended position when

the handle is nested, and releasably retaining the bolt in its retracted position when the

handle is projected. The ball-spring detent system preferably includes a hardened steel

ball carried in a closed- ended hole provided in the bolt. A compression coil spring is

carried in the closed- ended hole and biases the ball outwardly of the closed-ended hole

for selective engagement with spaced formations provided on the body member. One or

more plastic inserts carried in the bolt may define the closed-ended hole and/or may

define at least a part of the actuator receiving formation.

申请人：THE EASTERN COMPANY

代理机构：Burge & Porter Co.

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