초록 ▼

A coupling device in which a shaft or pipe is coupled to a boss member in which balls, disposed in radial holes in the boss, engage a groove on the shaft or pipe. A set ring slidable on the boss selectively forces engagement of the balls with the groove. The set ring is biased in both direction towa

A coupling device in which a shaft or pipe is coupled to a boss member in which balls, disposed in radial holes in the boss, engage a groove on the shaft or pipe. A set ring slidable on the boss selectively forces engagement of the balls with the groove. The set ring is biased in both direction toward the apertures. The bias can be provided by one or two spring rings engaging two oppositely inclined surfaces on either the boss or the set ring or by a coil spring set between two spring supports that are each moved by both the boss and the set ring.

대표청구항 ▼

A removable coupling device, comprising: a boss member having a hole extending axially inwardly and apertures extending and opening into said hole; a cylindrical member having a set groove circumferentially extending in an outer surface thereof and being fittable into said hole of said boss member;

A removable coupling device, comprising: a boss member having a hole extending axially inwardly and apertures extending and opening into said hole; a cylindrical member having a set groove circumferentially extending in an outer surface thereof and being fittable into said hole of said boss member; locking elements disposed and radially movable within said respective apertures such that said locking elements can be located at a first position where said locking elements can extend inwardly from said apertures so as to engage said set groove of said cylindrical member and a second position where said locking elements are disengaged from said set groove; a set ring disposed on said boss member for axial movement between a locking position, for engaging said locking elements at said first position, and two connectable and disconnectable positions, for permitting movement of said locking elements to said second position; and means for axially biasing said set ring so as to normally keep said set ring at said locking position, and away from either of said connectable and disconnectable positions, said means for axially biasing comprising two independent oppositely inclined surfaces formed on a first one of said boss member and said set ring, and at least one spring ring partially abutting an axial surface of a second one of said boss member and said set ring and in forced contact with at least one of said inclined surfaces, whereby said at least one spring ring automatically return said set ring from either of said connectable and disconnectable positions to said locking position, wherein said two connectable and disconnectable positions are disposed on opposite axial sides of said locking position.