Quick lock and release fastener
OwnerCharles W. Weisinventor
Life of this patent
Estimating the term…
Abstract
A quick lock and release fastener in the form of a split nut with a circumferentially truncated thread and drawn together or separable by a cam operable by rotation in one form or by reciprocation in a second form, to be placed over an externally threaded member and threadedly engaged therewith by a fractional turn of a head in the first form, or by reciprocation of a head in the second form, with spring return for separation of the split nut, and with constrictive engagement with the workpiece to be fastened.
Claims24
A quick lock and release fastener and workpiece for securing said workpiece to a threaded bolt, and including;
- a split nut comprised of opposed semicircular members with opposed semicircular threads to threadedly engage the threaded bolt,
- a drive plate with an opening therethrough to pass the split nut and exposing a bottom of the split nut for engagement with the workpiece,
- a pilot and lock means at the bottom of the split nut guiding the semicircular members thereof into constrictive and locked threaded engagement with the bolt,
- an operating head fixed to the drive plate and carrying the split nut in an assembly therewith,
- and cam means operable between the exterior of the split nut and the opening through the drive plate to alternately constrict the split nut into full threaded engagement with the bolt and to permit separation of the same therefrom, an incline on the exterior of the split nut, said incline continuing into a flat face complementary to and driven by a flat face of the opening through the drive plate.
A quick lock and release fastener operable by rotation for engagement onto a threaded bolt for securement of a workpiece, and including;
- a split nut comprised of opposed semicircular members with opposed semicircular threads to threadedly engage the threaded bolt,
- a drive plate with an opening therethrough to pass the split nut and exposing a bottom of the split nut for engagement with the workpiece,
- an operating head fixed to the drive plate and carrying the split nut in an assembly therewith,
- and cam means operable between the exterior of the split nut and the opening through the drive plate and comprised of an involute curved circumferential incline on the exterior of the split nut, said incline continuing tangentially into a flat face of the split nut complementary to and driven by a flat face of the opening through the drive plate, whereby the split nut is either constricted into full threaded engagement with the bolt or is permitted to separate therefrom.
A quick lock and release fastener operable by reciprocation for engagement onto a threaded bolt for securement of a workpiece, and including:
- a split nut comprised of opposed semicircular threaded to threadedly engage the threaded bolt,
- a drive plate with an opening therethrough to pass the split nut and exposing a bottom of the split nut for engagement with the workpiece,
- a return spring urging the drive plate from a lower enlarged portion of the split nut and toward engagement with a upper reduced portion of the split nut,
- an operating head fixed to the drive plate and carrying the split nut in an assembly therewith,
- and cam means operable between the exterior of the split nut and the opening through the drive plate and comprised of a longitudinal incline on the exterior of the split nut, said incline continuing into a flat face of the split nut complementary to and driven by a flat face of the opening through the drive plate, whereby the split nut is either constricted into full threaded engagement with the bolt or is permitted to separate therefrom.
Dependencies are inferred from the claim text.