Height adjustment apparatus

Details Height adjustment apparatus Height adjustment apparatus

A - Human Necessities

47

C

311/15, 155/38

A47C 3/24 (2006.01) A47B 9/04 (2006.01) A47C 3/28 (2006.01)

Patent

CA 1284942

Abstract of the Disclosure A mechanical height adjustment apparatus having a tubular telescopic body portion powered by a spring-loaded nut on a tubular threaded shaft and in which the same spring means acts to close a friction clutch that is selectively releasable by lever means relatively displacing the clutch surfaces as desired.

558474

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