Joints and connections – Articulated members – Lockable at fixed position
Patent
1977-10-03
1978-08-08
Kundrat, Andrew V.
Joints and connections
Articulated members
Lockable at fixed position
403352, F16B 714
Patent
active
041053460
ABSTRACT:
A locking system which enables a pair of telescoping members to be slidably movable with respect to each other and locked in a pre-determined position. The outer telescoping leg is generally of cylindrically configuration and has an aperture therein. A sleeve, also having an aperture formed therein, is rotatable about the outer surface of the outer leg. A brake lug is positioned in the leg aperture and the sleeve aperture is of tapered thickness about the leg axes. Rotation of the sleeve about the outer leg causes the brake lug to press against the outer surface of the inner leg and prevents the legs from moving along the leg axes.
REFERENCES:
patent: 573695 (1896-12-01), Penfield
patent: 1568296 (1926-01-01), Schleicher
patent: 2339615 (1944-01-01), Castelli
patent: 2871044 (1959-01-01), Peterson
Grayson, Gross, Friedman, Phillips and Rasch
Hertz Harvey S.
Kundrat Andrew V.
Singer, Lewak, Greenbaum and Goldstein
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