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US 5,331,912 AGranted
Self-releasing mast base collar
OwnerBrian Clarkinventor
Life of this patent
Estimating the term…
Abstract
A windsurfer mast base collar which has a a collar supporting a pair of spring loaded detents that are self-releasing upon application of modest upward manual forces and self-engaging upon application of downward mast securing forces upon an upper load bearing surface of the collar. The relative positions of the force bearing elements of the collar and the mast base to which it is attached results in the detents being subjected primarily to compressive loads.
Claims18
A mast base collar, comprising:
- circular support means for supporting a mast and surrounding and affixing to a mast base;
- and
- compressive means, attached to the support means by a hinge, for transmitting a compressive force from the support means at the hinge through the compressive means to engage the mast base.
A mast base collar, comprising:
- support means for supporting a mast and affixing to a mast base;
- and
- compressive means, bearing against the support means, for transmitting a compressive force from the support means through the compressive means to the mast base, wherein the force exerted on the compressive means by the support means causes the compressive means to be urged against the mast base, and the compressive means releases from engagement of the mast base when upward forces are exerted upon the collar relative to the mast base.
A mast base collar, comprising:
- circular support means for supporting a mast and surrounding and affixing to a mast base;
- and
- an arm, attached at one end of the arm to the support means by a hinge, which arm extends downward from the hinge and engages the mast base with a second end of the arm, and which arm carries the load from the support means at the hinge through the arm to the mast base.
A mast base collar, comprising:
- support means for supporting a mast and affixing to a mast base;
- and
- an arm attached at one end of the arm to the support means by a hinge, and which arm extends downward from the hinge and engages the mast base at a second end, and which arm releases from engagement of the mast base when upward forces are exerted upon the support means relative to the mast base.
A mast base collar, comprising:
- support means for supporting a mast and affixing to a mast base;
- and
- compressive means, bearing against the support means, for transmitting a compressive force from the support means through the compressive means to the mast base by engaging the mast base, and which compressive means releases from engagement of the mast base when upward forces are exerted upon the support means relative to the mast base.
Dependencies are inferred from the claim text.