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US 6,305,052 B1Granted
Handle with concave/convex profile
AssigneeUltradent Products, Inc.
InventorBarry Sinclair
Life of this patent
Estimating the term…
Abstract
A handle for or of a hand held device which has on a side thereof a concave convex profile to accommodate the pad and base (or heel) of the thumb, opposite which side the handle is sufficiently bulbous to provide a surface against which all of the first three fingers of the user engage. This anthropometric handle provides the user or holder thereof with improved feel and purchase.
Claims5
A handle for a hand held device and which is adapted for improved feel and purchase when held in the palm of a hand and between a thumb and fingers, the handle comprising:
- a top side having a portion thereof which is formed into a combination concave convex profile in which,
- a first portion of the top side of the handle comprises a convex region which is bulbous and slopes from the center portion of the convex region in a tapered fashion toward the rear end of the handle,
- the convex portion also sloping and tapering down toward the front end of the handle so as to converge into a concave, indented region on said top side which is thereby formed to receive the inner profile of the thumb in a manner which constitutes an anthropometric match for the inner profile of the thumb, and
- a bottom side which is continuously convex and which slopes and tapers upwardly toward the rear of the hand from the center portion of the convex region to terminate in a bulbous end portion which fits within the palm of the hand and is sufficiently bulbous to provide a surface against which the first three fingers of the user may engage.
1 more element
Dependencies are inferred from the claim text.