Binder device releasably engaging aperture or notch of sheet – Sheet retainer with releasable keeper – Keeper including apertured or recessed sheet retainer...
Patent
1980-08-04
1982-07-20
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Sheet retainer with releasable keeper
Keeper including apertured or recessed sheet retainer...
402 61, 402 64, 402 80P, B42F 1312
Patent
active
043403166
ABSTRACT:
A binding arrangement according to the present invention comprises a post projecting from one side of the arrangement and an opening having a blind ended mouth surrounded by a mouth wall for releasably securing the head of the post at the other side of the arrangement. The mouth is narrower and longer than the head which is stiff for forceably opening the mouth when it is inserted or removed from the secured position. The head has an undercut base for receiving the mouth wall when the head is locked in the opening. The overall arrangement is adapted to provide outward lateral flexing and inward lateral rebounding of the mouth wall at the undercut base of the head for removably securing the head in the opening.
REFERENCES:
patent: 1517712 (1924-12-01), Davie
patent: 3083714 (1963-04-01), Foster
patent: 3260264 (1966-07-01), McKowen
patent: 3574472 (1971-04-01), Cott
Bell Paul A.
Brown John S.
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