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US 4,813,106 AGranted
Telescopic button
AssigneeYoshida Kogyo K. K.
InventorJukichi Fukushima
Life of this patent
Estimating the term…
Abstract
In a button which includes a button body and a tack member adapted to be joined with the button body when attaching the button to a garment fabric, the button body has a contractible and stretchable hollow hub in the form of a double tube composed of an outer tube integral with a button back and projecting downwardly therefrom and an inner tube separate from the button back and telescopically connected to the outer tube. A spring is mounted between the inner and outer tubes so as to normally urge the inner tube toward the button head.
Claims4
A telescopic button for attachment to a garment fabric, comprising:
- (a) a button body including a button back and a cap covering said button back on its front side, said button back having a hollow hub disposed at its rear side, said hollow hub being composed of an outer tube integral with said button back and projecting centrally therefrom and terminating in an inwardly directed bottom flange and an inner inner tube separated from said button back and telescopicaly connected to said outer tube and having at its front end an outwardly directed upper flange;
- (b) a coiled compression spring mounted between said bottom flange and said upper flange so as to normally urge the latter toward said cap;
- and
- (c) a tack member including a head and a shank projecting centrally from said head for being forced through the garment fabric and then being inserted into said inner tube for attaching the button to the garment fabric.
1 more element
Dependencies are inferred from the claim text.