A handle is a part of, or attachment to, an object that can be moved or used by hand. The design of each type of handle involves substantial ergonomic issues, even where these are dealt with intuitively or by following tradition.
This handle permits comfortable carrying, with otherwise bare hands, of a heavy package, suspended on a tight string that passes around the top and bottom of it: the string is strong enough to support it, but the pressure the string would exert on fingers that grasped it directly would often be unacceptable.
One major category of handles are pull handles, where one or more hands grip the handle or handles, and exert force to shorten the distance between the hands and their corresponding shoulders.
When the grip required is a fist grip, as with a door handle that has an arm rather than a knob to twist, the term "handle" unambiguously applies.
The handlegrip, which has a novel exterior gripping surface, is produced by dipping a male mandrel into an elastomeric latex and, thereafter, curing the latex skin on the mandrel prior to stripping off of the grip from the mandrel.
The grip is installed on a baseball bat's handle by creating a pressure differential between the interior and exterior of the grip, i.e., by exposing it to a vacuum, thereby causing the grip to stretch radially outward from its longitudinal axis.
After the grip 10 has been cuffed onto the vacuum, tube's collar 26, a pressure differential is created between the interior and the exterior of the grip sufficient to expand the grip into an internal girth throughout its longitudinal length which is substantially greater than the handle 13 of a baseball bat.
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