Closure fasteners – Bolts – Multiple
Patent
1979-12-07
1982-03-30
Moore, Richard E.
Closure fasteners
Bolts
Multiple
272DIG50, E05C 1752
Patent
active
043220991
ABSTRACT:
Clamping closure for the releasable joining of a closing strip of cases, writing cases and the like, with the main body of structures of this type. A lower part has a spring and an upper part is provided, which is in releasable locking engagement with the spring when the two parts are pressed together. The lower part is in the form of a base plate provided with two grooves arranged on a circular circumference and including two webs in opposition to each other, a cap equipped with two protrusions corresponding to the two grooves and joinable with the base plate by pressing the projections into the grooves; the cap also being slit in the area of the webs and otherwise having a partially cylindrical circumference, a slit annular spring with two opposing circumferential shoulders, which in the areas of the webs springingly protrude over the external periphery of the cap in a radial direction while the upper part has a clamping plate with a circular orifice essentially corresponding to the external diameter of the cap. The edge of the orifice facing the lower part defines an annular shoulder to depress the circumferential protrusions of the annular spring and to lock between the protrusions and the base plate.
REFERENCES:
patent: 1305233 (1919-05-01), Ogden
patent: 1320496 (1919-11-01), Roth
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patent: 4035874 (1977-07-01), Liljendahl
patent: 4222595 (1980-09-01), Schmidt
Moore Richard E.
The Parker Pen Company
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