Locks – Special application – For control and machine elements
Patent
1995-12-28
1998-01-20
Gall, Lloyd A.
Locks
Special application
For control and machine elements
70180, 70203, 70212, 74526, 74527, 137385, 251104, 251110, F16K 3506
Patent
active
057091129
ABSTRACT:
An improved spring-loaded latching and locking mechanism for a rotatable control of the type having a stem journaled in a body and rotatable about an axis in a boss on the body. The stem has a protuberance for engagement with the handle. The handle comprises a boss-engaging end portion, a stem-engaging portion, a slider-riding portion, and a grip end portion. The slider-riding portion has a slider with a tang extending therefrom. Each side of the slider-riding portion also includes a pair of springs mounted on a rail cutout so that the springs provide resistance against movement of the slider. The slider-riding portion includes an aperture for securing a lock to arrest movement of the slider. The boss has surfaces located to correspond to predetermined positions of the stem. These surfaces are engageable by the tang which, when so engaged, restrains the handle from rotation and prevents removal of the handle from the stem.
REFERENCES:
patent: 4126023 (1978-11-01), Smith et al.
patent: 4770388 (1988-09-01), Carman
patent: 5183073 (1993-02-01), Roberts
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