Abstract: A quick disconnect pin assembly is provided with a bushing having an intel bore with an axially extending recess. The disconnect pin, insertable into the bore, has an annular groove in alignment with the recess when the pin is in an inserted position within the bushing. This recess defines a locking ring seat. A resilient locking ring in the groove locks between the seat and the shoulder to prevent withdrawal of the pin after the pin is inserted. The bushing has a side face on its inserted end which is of less diameter than its side face on the other end toward the withdrawal opening of the bushing, forming a space between the bushing and the pin. Part of a release means for releasing the ring from engagement between the seat and the shoulder to deflect it backwardly into the groove so that the pin can be withdrawn utilizes this space.

Abstract: An interchangeable end piece member for removably connecting a watchband to a wristwatch case so as to accommodate watchbands universally to watchcasings having various spacings and configurations between the lugs for spring bars of different lengths. The end piece member has at least one tongue which slides into a mating longitudinal groove in a retainer clip attached to the watchband. A resilient tab locks the tongue in the groove, with means to release the tongue by deflecting the tab.