Reusable insertable one-piece handle for stretch wrap rolls
OwnerJoseph Goldsteininventor
Life of this patent
Estimating the term…
Abstract
Two identical handles are configured for insertion into the core of a stretch-wrap roll. A substantially rigid hand grip is forward on each handle so that the hand grips can be grasped in the two hands for position guidance of the stretch-wrap roll. The handle grips can be carried in the gloved hand and can be run free or squeezed for braking control during stretch-wrap film winding. Each handle is molded of synthetic polymer composition material to be sufficiently rigid to provide the necessary support, but the plug inserted into the core is configured and sized to be somewhat resilient to facilitate insertion into and removal from the core.
Claims16
A reusable insertable one-piece handle for film rolls on a tubular roll core comprising:
- a handle, said handle having a hand grip thereon with an outside surface of generally circular configuration, said hand grip being for direct grasp by the user and being sized for manual grasp by the user;
- said handle having a plug unitarily formed thereon with ribs on said plug arranged in generally circular configuration, said ribs having an outside diameter larger than the opening in the tubular roll core into which it is to be inserted;
- said handle including a transition piece between said plug and said hand grip and unitarily formed with said plug and said handle grip, said plug and said ribs being deflectable by stress applied thereto so that said ribs can be inserted into a roll core with indentation of the roll core, remain in engagement with the roll core during use and be withdrawn from the roll core without damage to said handle.
A reusable insertable one-piece handle for rolls having tubular cores, said handle member being unitarily formed of flexible thermoplastic synthetic polymer composition material, said handle comprising a tubular plug, a conical transition piece and a hand piece, formed together substantially as a body of revolution around an axis;
- said tubular plug having an outer cylindrical suface sized to fit within the opening in a tubular roll core, said plug having a plurality of axial ribs on said outer cylindrical surface thereof, said axial ribs extending to a circumscribing circle of a diameter larger than the diameter of the inside opening of the tubular roll core, said plug having a face closing the end of said plug, said face having substantially radial ribs thereon adjoining said axial ribs on said outer surface of said plug;
- said conical transition piece joining said plug with a ring stop of larger diameter than said circumscribing circle, said ring stop being continuous without ribs therein so that said axial ribs on said plug are resilient by virtue of rib deflection and said ring stop resists circumferential deflection by virtue of its lack of ribs;
- said hand grip adjoining said transition piece, said handle grip having a substantially circular cylindrical exterior surface for direct grasp by the user and having circular ribs thereon so that said handle can be inserted into one end of a roll core to guide and support the roll core.
A reusable insertable one-piece handle for rolls having tubular cores, said handle being unitarily formed of thermoplastic synthetic polymer composition material, said handle comprising a tubular plug, a conical transition piece and a hand piece, formed together;
- said tubular plug having an outer cylindrical surface sized to fit within a tubular roll core, said outer cylindrical surface defining an axis, said plug having a plurality of axial ribs on said outer cylindrical surface thereof, said axial ribs extending to a circumscribing circle of a diameter larger than the diameter of the inside opening of the tubular roll core, said plug having a face closing the end of said plug, said face having substantially radial ribs thereon adjoining said axial ribs on said outer surface of said plug;
- said transition piece joining said plug with a ring stop of larger diameter than said circumscribing circle, said ring stop being continuous without ribs therein so that said axial ribs on said plug are resilient by virtue of axial rib deflection and said ring stop resists circumferential deflection by virtue of its lack of ribs, said ring stop being conical where it adjoins said plug so that axial thrust of said plug towards said axial ring stop causes reduction in diameter of said axial ribs aid in insertion of said handle into a roll core;
- said hand grip adjoining said transition piece, said hand grip having a substantially circular cylindrical exterior surface having circular ribs thereon so that said handle can be inserted into one end of a roll core to guide and support the roll core.
Dependencies are inferred from the claim text.