Automatic lock slider for slide fastener

Details Automatic lock slider for slide fastener Automatic lock slider for slide fastener

1995-03-30

1997-02-18

Cuomo, Peter M.

Buckles, buttons, clasps, etc.

Zipper or required component thereof

Slider having specific configuration, construction,...

24423, 24424, A44B 1930

Patent

active

056031440

ABSTRACT:
In an automatic lock slider for a slide fastener having element rows on its back side, a resilient member having a locking pawl engageable and disengageable with the element rows from the back side is actuated by one end of a pivotal bat pivotable about a pivot, the resilient member being in the form of a small-width metallic leaf spring having a predetermined length and bent in a desired shape. The resilient member keeps adequate resilience for a long period and secures more reliable resilient deformation and restoration compared to a mere leaf spring, so that the locking pawl can come into and out of engagement with the element rows smoothly and reliably, depending on whether or not a pull tab is pulled. Not only in a concealed slide fastener but also in an ordinary slide fastener, partly since an upper wing is merely flat, and partly since the width of the upper wing is reduced as small as possible, it is possible to reduce the part of the slider exposed on the front surface of the slide fastener to a minimum amount.

REFERENCES:
patent: 2178948 (1939-11-01), Brozek
patent: 3798715 (1974-03-01), Moertel
patent: 3977052 (1976-08-01), Takamatsu
patent: 4667376 (1987-05-01), Ishii et al.

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