Chairs and seats – Collapsible chair; i.e. – relatively folding bottom – back,... – Nonpivoted crossed legs
Patent
1993-12-30
1997-05-06
Brown, Peter R.
Chairs and seats
Collapsible chair; i.e., relatively folding bottom, back,...
Nonpivoted crossed legs
297 30, 297 56, 2971584, A47C 414
Patent
active
056263856
ABSTRACT:
A pivotally articulated, foldable load-support device, comprising two oppositely inclined, intersecting leg frames, being joined by aligned pivotal connections at two pairs of upper pivot-points above the intersection of the leg frames to an upper load-bearing structure, and being joined by aligned pivotal connections at two pairs of lower pivot-points below the intersection of the leg frames to a lower load-bearing structure. Each load-bearing structure is divided, by relative placement of the paired pivot-points joining such load-bearing structures to the leg frames, into mutually co-responsive, load-distributing, balancing, load-reapportioning, and counterbalancing front, intermediate, and rear load-sharing portions thereof. Dimensions of leg frames and of load-bearing structures, and relative positions of the four paired pivot-points are proportioned so that, when not in operation, the device can be folded substantially flat, the rear leg frame nesting within the upper and lower load-bearing structures, the upper and lower load-bearing structures nesting within the front leg frame, and all leg-frame side-elements, all load-bearing structure side-elements, and all pivot-points thereby substantially occupying a single plane.
In table form, the upper load-bearing table-top structure cooperates and counterbalances in load-sharing relationships and in reciprocating pivotal actions with the lower load-bearing footrest structure. Similarly, in chair form, the upper load-bearing seat structure cooperates and counterbalances in reciprocating, load-sharing, counterbalancing relationships with the lower load-bearing footrest structure and cooperates in direct load-support relationships with the backrest. Variant configurations of chair and table embodiments are also disclosed.
REFERENCES:
patent: 1539225 (1925-05-01), West et al.
patent: 1770321 (1930-07-01), Mougeotte
patent: 1928991 (1933-10-01), Bishop
patent: 2295122 (1942-09-01), Moeller
patent: 2741298 (1956-04-01), Roberts III
patent: 3025101 (1962-03-01), McKinnie
patent: 3224530 (1965-12-01), King et al.
patent: 4241950 (1980-12-01), Simpson
LandOfFree
Versatile support for dynamically fractional gross loads does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Versatile support for dynamically fractional gross loads, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Versatile support for dynamically fractional gross loads will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2127592