Chairs and seats – Having detachably interfitting parts or components; i.e.,... – Interfitted back and back frame
Patent
1992-01-02
1993-02-09
Brown, Peter R.
Chairs and seats
Having detachably interfitting parts or components; i.e.,...
Interfitted back and back frame
297440, 74527, 403374, A47C 700
Patent
active
051848716
ABSTRACT:
An improved locking mechanism for detachably securing a seat back to a chair frame is disclosed. The improved locking mechanism includes a pair of side brackets secured to opposite sides of the seat back. Linkage supported from the chair frame are provided for receiving the slide brackets thereon for supporting the seat back on the chair frame in a predetermined orientation relative to the seat member. A moveable locking arm is supported from the slide brackets and includes an offset arcuate cam surface which is adapted to engage an arcuate notch formed on the linkage when the locking arm is moved to a locked position. The mating engagement of the arcuate offset cam surface within the arcuate notch generates a line-of-contact therebetween which inhibits relative movement between the slide brackets and the upstanding links for rigidly securing seat member to the chair frame. An alternative embodiment discloses a modified link member which is adapted to create an interference engagement with the slide bracket to augment the locking action of the arcuate cam surface within the arcuate notch.
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La-Z-Boy Product Information and Warranty Information Form #60, Apr. 1989.
LaPointe Larry P.
Shoemaker Edwin J.
Brown Peter R.
Jr. Milton Nelson
La-Z-Boy Chair Co.
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