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US 5,353,667 AGranted
Combination tool and fastener
OwnerDavid W. Wilnerinventor
Life of this patent
Estimating the term…
Abstract
A combination tool and fastener in which the fastener has a head portion and a threaded screw portion. An aperture is formed in the head portion. The aperture has a first portion of constant dimension recessed inwardly from the head portion A second portion of the aperture is recessed an additional distance beyond the end of the first portion and is increased in dimension The tool is provided with an engaging portion which is insertable through the first aperture portion and lockingly engageable within the second aperture portion so as to enable the tool to rotate the fastener in either direction.
Claims4
A combination tool and fastener, comprising:
- said fastener having a heat having a top surface and a threaded screw portion;
- an aperture formed in said head, said aperture having a first portion comprised of a pair of rectangular slot-shaped portions;
- said aperture having a second portion extending under said top surface and defining a pair of recesses, each recess having a pair of side walls which are angularly offset from said slot-shaped portions;
- and
- said tool having an engaging portion, said engaging portion including a shaft portion and a pair of oppositely extending wing portions having parallel planar walls which are insertable through said first portion of said aperture and are rotatable in a selected rotational direction within said second aperture portion so that said wing portions abut against two of said of side walls, said engaging portion lockingly engaging with said second aperture portion whereby accidental disengagement of said engaging portion from said aperture is prevented during turning of said fastener by said tool.
2 more elements
Dependencies are inferred from the claim text.