Swivel construction
OwnerEdward J. Salameinventor
Life of this patent
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Abstract
A swivel construction for a pair of superposed relatively rotatable plates having a ball bearing race therebetween and comprising a bolt fixed to the top plate and extending through the bottom plate centrally thereof, a cylindrical plastic bearing sleeve between the bolt and the bottom plate, a flange on the sleeve, and a nut on the bolt exerting variable pressure on the sleeve flange and on the bottom plate.
Claims8
A swivel construction comprising a top plate, a bottom plate, a swivel connecting the plates, aligned center holes in the plates,
- the swivel comprising a center bolt, a head on the bolt in contact with the upper surface of the top plate, a threaded end portion on the bolt, the bolt extending through the aligned center holes and the threaded portion of the bolt extending past the bottom plate, means preventing relative rotation of the bolt and the top plate,
- a flanged bearing sleeve on the bolt, the flange thereof underlying the portion of the bottom plate adjacent its center hole, the sleeve extending generally through the bottom plate center hole,
- a nut on the bolt threaded portion providing adjustment of the degree of resistance to relative rotation of the plates by variable pressure on the sleeve flange and bottom plate,
- and interengaging means between the washer and bolt preventing relative rotation of the same.
The swivel connection of claim 8 including a smooth unthreaded portion on the bolt in the area of the bearing sleeve.
Dependencies are inferred from the claim text.