Chairs and seats – Oscillating suspender connected to or through adjunctive rest – Armrest or side frame-connected
Patent
1995-07-24
1997-04-15
Nelson, Jr., Milton
Chairs and seats
Oscillating suspender connected to or through adjunctive rest
Armrest or side frame-connected
2974632, 74126, 192 4892, A47D 1310
Patent
active
056202326
ABSTRACT:
There is provided in combination a first member and a second member movable in a reciprocal angular movement, and an articulation between the first member and the second member. The articulation comprises a shaft and a mechanism to convert the angular reciprocal movements of both members into an intermittent unidirectional rotary movement of the shaft, The mechanism of the articulation comprises a pair of ball bearings having each an outer race mounted in a fixed relationship with a respective first or second member, and also having each an inner race mounted in a fixed and coaxial relationship with the shaft. The mechanism further has a pair of flanges, being each mounted adjacent and coaxially a respective bearing, and also in a fixed relationship with a respective first or second member. Each flange has one-way clutch acting on the shaft in a first direction, whereby a movement of either the first member or the second member in the first direction causes the flange fixed to that first member or to that second member to clutch onto the shaft and to rotate the shaft in that first direction. Conversely, a movement of either first or second member in a second direction causes the flange fixed to that first member or to that second member to slide on the shaft, preventing thereby a movement of the shaft in the second direction. Thus during movement of the members, the inner races of the bearings of the articulation are rotated intermittently in the first direction.
REFERENCES:
patent: 2660893 (1953-03-01), Paterson
patent: 3235304 (1966-02-01), Glass
patent: 3342526 (1967-09-01), Sereda
patent: 4213650 (1980-07-01), Sroub
patent: 4877290 (1989-10-01), Schetl
patent: 5280996 (1994-01-01), Trent
patent: 5460427 (1995-10-01), Serber
Barfield Anthony D.
Jr. Milton Nelson
Theriault Mario D.
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