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US 4,005,507 AGranted
Safety pushpin
OwnerTadakatsu Yamazakiinventor
Life of this patent
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OwnerTadakatsu Yamazakiinventor
Estimating the term…
A safety pushpin comprising a head and a pin extending from the center of said head, said pushpin being contained in a casing comprising an upper shell having at its top a large-diameter hole having an inwardly flanged opening edge and a lower shell having a small-diameter hole in the center of bottom wall thereof, said head of the pushpin having a diameter larger than the distance across said inwardly flanged edge, and the pin extending from the head of the pushpin being passable through said small-diameter hole, and further, a safety pushpin also servable as a clip, which has the substantially same construction as the above-said pushpin and in which an obliquely extending space spread out radially toward the upper and lower ends is provided at a suitable part in the joint of the casing and said both upper and lower shells are joined swingably so as to be able to close said obliquely extending space, and also an elastic member is interposed between said upper and lower shells so that said space is open normally.
A safety pushpin that can concurrently serve as a clip, comprising,
A safety pushpin comprising,
A safety pushpin comprising,
Dependencies are inferred from the claim text.