Self-releasing mast base collar

Details Self-releasing mast base collar Self-releasing mast base collar

1992-09-21

1994-07-26

Basinger, Sherman

Ships

Spars

Masts and masting

B63B 1500

Patent

active

053319125

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.

REFERENCES:
patent: 3507240 (1970-04-01), Butler
patent: 3704850 (1972-12-01), Hendrickson et al.
patent: 4586399 (1986-05-01), Kassai
Yasuoka Marine Co., Ltd., Shredder, (catalog & 1991 calendar) 1990.
Photographs of prior art mast base collars are enclosed & identified as follows in the same order as discussed in background portion of application: #1-Windsurfing Hawaii, Version 1; #2-Gorge Technology; #3--Windsurfing Hawaii, Version 2; and #4--Neil Pryde.

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