A - Human Necessities – 47 – C
Patent
A - Human Necessities
47
C
A47C 3/20 (2006.01) A47C 7/40 (2006.01)
Patent
CA 2118076
A chair back has a back rest mounted upon a fastening member which is held in a desired vertical position upon a back rest carrier by a locking device. In the locking device an anchoring plate has shoulders bearing rearwardly upon the front of the fastening member, back rest carrier and a resilient clamp resistant device, the anchoring plate being provided at its rear end with an operating lever pivoted to the plate. Movement of the lever into a locking position brings pressure to bear upon the resilient device thereby compressing springs while clamping the fastening member to the carrier. The resilience applying member is located functionally between the resilient device and the lever to effect the clamping action.
Adams Patent & Trademark Agency
Sifa Sitzfabrik Gmbh
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