Handle For A Hydraulically Driven Tool With Heat Transmission Reducing Properties

• US 20130081838A1
• Filed: 09/25/2012
• Published: 04/04/2013
• Est. Priority Date: 09/30/2011
• Status: Active Grant

• Current Assignee: Greenlee Tools, Inc. (Emerson Electric Company)
• Original Assignee: Greenlee Textron Incorporated (Emerson Electric Company)
• Inventors: Tully, Gerald Jonathan
• Granted Patent: US 9,604,355 B2
• Time in Patent Office: Days
• US Class Current: 173/168
• CPC Class Codes: B25B 23/1453 for impact wrenches or screwdrivers
• CPC Class Codes: B25F 5/005 Hydraulic driving means
• CPC Class Codes: B25F 5/008 Cooling means
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• CPC Class Codes: Y10T 137/2622 Bypass or relief valve responsive to pressure downstream of outlet valve

Abstract

A handle for a hydraulically driven tool is provided reduces the amount of heat transmitted to the user of the tool as a result of the high temperature fluid flowing through the inner body of the handle. The inner body is formed of a heat transmissive material which has at least one channel through which the fluid flows. The handle has a number of properties which reduces heat transmission to the user, including standoffs, ribs and fastener receiving extensions.

Claims

1. A tool comprising:

a body formed of a heat transmissive material, said body having at least one channel through which a high temperature fluid flows, wherein heat is generated as a result of the fluid;

a non-conductive handle generally surrounding said body, said handle having an interior surface and an exterior surface, said interior surface facing said body; and

said interior surface having a plurality of spaced apart standoffs extending from said interior surface, said standoffs contacting said body, such that an air gap is formed between said interior surface and said body at locations where standoffs are not provided.

2. The tool as defined in claim 1, wherein said air gap provides a spacing of 0.10″

between said interior surface and said body.

3. The tool as defined in claim 1, wherein said interior surface has a plurality of fastener receiving extensions extending therefrom toward said body, each said fastener receiving extensions having an aperture provided therethrough.

4. The tool as defined in claim 3, wherein said body includes a plurality of passageways therethrough, each said passageway having a countersink provided in said body at each end thereof, wherein respective apertures and respective passageways align with each other such that the fastener receiving extensions seat within the countersinks, said fastener receiving extensions being smaller than said countersinks such that said fastener receiving extensions do not contact said body.

5. The tool as defined in claim 4, further including a plurality of fasteners, respective fasteners extending through said aligned apertures and passageways.

6. The tool as defined in claim 1, wherein said standoffs are cross-shaped.

7. The tool as defined in claim 1, wherein said interior surface further has a plurality of spaced apart ribs extending therefrom.

8. The tool as defined in claim 1, wherein said handle is formed in two parts and is formed by injection molding.

9. The tool as defined in claim 1, further including a soft grip material on said handle.

10. A tool comprising:

a body formed of a heat transmissive material, said body having at least one channel through which a high temperature fluid flows, wherein heat is generated as a result of the fluid, said body including a plurality of passageways therethrough, each said passageway having a countersink provided in said body at each end thereof;

a non-conductive handle generally surrounding said body, said handle having an interior surface and an exterior surface, said interior surface facing said body, said handle being formed in two parts and formed by injection molding;

said interior surface having a plurality of spaced apart standoffs and a plurality of ribs extending from said interior surface, said standoffs and said ribs contacting said body, such that an air gap is formed between said interior surface and said body at locations where standoffs and said ribs are not provided;

said interior surface having a plurality of fastener receiving extensions extending therefrom toward said body, each said fastener receiving extensions having an aperture provided therethrough, wherein respective apertures and respective passageways align with each other such that the fastener receiving extensions seat within the countersinks, said fastener receiving extensions being smaller than said countersinks such that said fastener receiving extensions do not contact said body;

a plurality of fasteners, respective fasteners extending through said aligned apertures and passageways; and

a soft grip material on said handle

11. The tool as defined in claim 10, wherein said air gap provides a spacing of 0.10″

between said interior surface and said body.

12. The tool as defined in claim 10, wherein said standoffs are cross-shaped.