초록 ▼

A swivel assembly comprising a base plate, a swivel plate mounted on the base plate for rotation relative thereto, bearing elements between the opposing inner faces of the plates, and a fastener connecting the plates. The fastener comprises a bolt having a head on the outer face of the base plate, a

A swivel assembly comprising a base plate, a swivel plate mounted on the base plate for rotation relative thereto, bearing elements between the opposing inner faces of the plates, and a fastener connecting the plates. The fastener comprises a bolt having a head on the outer face of the base plate, and a threaded shank extending through axially aligned holes in the plates. The fastener further comprises a nut on the outer face of the swivel plate threaded on the bolt for drawing the swivel plate toward the base plate against the bearing elements. Both the head of the bolt and the nut are freely rotatable relative to the plates, with the head of the bolt being generally accessible for being turned, and the nut being rendered generally inaccessible by an object mounted on the outer face of the swivel plate. A lock selectively holds the nut in fixed angular position relative to the swivel plate to ensure relative rotation of the nut and bolt upon turning the head of the bolt, whereby the resistance of the swivel plate to rotation relative to the base plate may be adjusted.

대표청구항 ▼

A swivel assembly comprising: a base plate; a swivel plate mounted on the base plate for rotation relative to the base plate in a plane generally parallel to but spaced from that of the base plate; bearing means between the opposing inner faces of the plates; means for adjusting the resistance of th

A swivel assembly comprising: a base plate; a swivel plate mounted on the base plate for rotation relative to the base plate in a plane generally parallel to but spaced from that of the base plate; bearing means between the opposing inner faces of the plates; means for adjusting the resistance of the swivel plate to rotation relative to the base plate comprising first and second fastening members, the first fastening member comprising a bolt having a head on the outer face of one plate, and a threaded shank extending through axially aligned holes in the plates and defining an axis about which the swivel plate rotates, and the second fastening member comprising a nut on the outer face of the other plate threadable on the shank of the bolt for drawing the swivel plate toward the base plate against said bearing means thereby to adjust the resistance of the swivel plate to rotation relative to the base plate, both fastening members being freely rotatable relative to said plates, one of the fastening members being accessible for being turned from the outer face of the base plate and the other fastening member being rendered generally inaccessible by an object mounted on the outer face of the swivel plate; and locking means for selectively holding the inaccessible fastening member in fixed angular position relative to the swivel plate to ensure relative rotation of the fastening members upon turning the accessible fastening member, whereby the resistance of the swivel plate to rotation may be adjusted.