Electively detachably coupled ball joint and pivot cup combinati

Details Electively detachably coupled ball joint and pivot cup combinati Electively detachably coupled ball joint and pivot cup combinati

1982-07-28

1985-02-12

Basinger, Sherman D.

Ships

Spars

Masts and masting

403129, B63B 1500

Patent

active

044984103

ABSTRACT:
The present invention is an electively detachably coupled ball joint and pivot cup combination for electively detachably coupling a mast to a surfboard. The electively detachably coupled ball joint and pivot cup combination includes a pivot cup which is pivotally and rotationally coupled to the surfboard and an annular plate which is disposed on and mechanically coupled to the peripheral edge of the opening of the pivot cup. The electively detachably coupled ball joint and pivot cup combination also includes a spherical member which has been cut into a plurality of sections and which, when not held apart, may be either inserted into or removed from the pivot cup through the annular plate with each of the plurality of sections of the spherical member being loosely coupled to the mast and a sleeve into which the mast is inserted and which is slidably coupled to the mast. A spring resiliently biases the sleeve against the plurality of sections of the spherical member so that the plurality of sections of the spherical member, which are spaced apart, are secured in the pivot cup whereby the application of a force overcoming the resiliently biasing force of the spring moves the sleeve away from the plurality of sections of the spherical member thereby enabling the plurality of sections of the spherical member to move closer together in order to release the spherical member from the pivot cup.

REFERENCES:
patent: 1333432 (1920-03-01), Maier
patent: 4044725 (1977-08-01), Miller
patent: 4236476 (1980-12-01), Solf et al.

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