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US 4,442,601 AGranted
Tool handle
AssigneeNoga Engineering Ltd.
InventorsGustav M. Hirsch, Moshe Bar-Nof
Life of this patent
Estimating the term…
Abstract
A handle for swivelling tools, aperture means within the handle for receiving the stock swivelling of the tool, and internal retaining means for retaining said tool within said handle. A preferred embodiment of the invention enables the insertion or removal of the tool only when the tool is rotated relative to the handle in a first direction. When the tool is used for its tool purposes it swivels or rotates in the second direction and accordingly is retained within the handle.
Claims3
A handle for a tool having a cylindrical shank with a peripheral notch therein, the handle comprising:
- an axial cylindrical aperture defined in said handle for accomodating said tool shank therein;
- and
- retaining means, substantially in said handle having a retaining position and a release position, for retaining said tool by engaging said notch, said retaining means being normally in said retaining position and switchable to said release position upon rotation of said handle with respect to said tool shank in a preselected direction with simultaneous application of an axial force thereto, said shank being rotatable in either of two opposite directions with respect to said handle when the shank is in the axial cylindrical aperture of said handle and said retaining means is in said retaining position.
Dependencies are inferred from the claim text.