초록 ▼

A button device has a head member and a back member joined therewith, the head member having a central cavity dimensioned to receive an insert member with a press-fit. The insert member is generally dome-shaped with its peripheral wall upwardly tapered. The cavity is defined by an inner wall initial

A button device has a head member and a back member joined therewith, the head member having a central cavity dimensioned to receive an insert member with a press-fit. The insert member is generally dome-shaped with its peripheral wall upwardly tapered. The cavity is defined by an inner wall initially upwardly flared but deformed to taper when a peripheral ridge is clamped against the insert member by a punch capable of producing a clamping pressure of a bidirectional vector.

대표청구항 ▼

A button device comprising: (a) a decorative head member having a cavity in its top surface and a ridge on said top surface, said ridge extending around said cavity and defining at least an upper part of said cavity, said head member further having a groove in its top surface, said groove extending

A button device comprising: (a) a decorative head member having a cavity in its top surface and a ridge on said top surface, said ridge extending around said cavity and defining at least an upper part of said cavity, said head member further having a groove in its top surface, said groove extending around said ridge and being partly defined by said ridge; (b) an insert member of a rigid material retained in said cavity and having an upwardly tapered peripheral wall firmly embraced with said ridge, said insert member having a generally dome-like shape including an arcuate upper surface contiguous to said peripheral wall, said ridge having a marginal edge lying in registry with the borderline between said upper surface and said peripheral wall.