Height adjusting mechanism for swivel chair

Details Height adjusting mechanism for swivel chair Height adjusting mechanism for swivel chair

1993-01-25

1994-08-30

Chotkowski, Karen J.

Supports

Stand

Standard type

248417, A47C 300

Patent

active

053420128

ABSTRACT:
A height adjusting mechanism for a swivel chair prevents a tightening phenomenon and involuntary adjustment of the position. The mechanism includes a supporting pillar pipe and a cylinder pipe coupled so that they can freely extend and contract relative to each other. A clutch unit is provided for connecting and disconnecting a height adjusting power transmission. The clutch unit includes a nut clutch and a clutch plate coupled or released to one another and a chamber of predetermined width is defined within the nut clutch. In the chamber, a rubber O-ring is provided for holding the nut clutch.

REFERENCES:
patent: 3991965 (1976-11-01), Westover
patent: 4087070 (1978-05-01), Hancock
patent: 4234152 (1980-11-01), Browse
patent: 4324382 (1982-04-01), Beukema et al.
patent: 4394001 (1983-07-01), Wisniewski
patent: 4494721 (1985-01-01), Trinkel et al.
patent: 4598892 (1986-07-01), Franckowiak et al.
patent: 4640484 (1987-02-01), Lamond et al.
patent: 4709894 (1987-12-01), Knoblock et al.
patent: 4828212 (1989-05-01), Dicks
patent: 5201799 (1993-04-01), Johnson

Affiliated with

Also associated with

Rating

Height adjusting mechanism for swivel chair does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Height adjusting mechanism for swivel chair, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Height adjusting mechanism for swivel chair will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-25277