Handle for hand tools to be rotated during operation

• US 4,060,115 A
• Filed: 01/24/1977
• Issued: 11/29/1977
• Est. Priority Date: 01/23/1976
• Status: Expired due to Term

• Current Assignee: Jesus Bocanegra Marquina
• Original Assignee: Jesus Bocanegra Marquina
• Inventors: Bocanegra Marquina, Jesus
• Primary Examiner(s): Jones, Jr., James L.
• Application Number:
  US05/761,623
• Time in Patent Office: 309 Days
• Field of Search: 145/61 R, 145/61 E, 145/61 EA, 145/61 G, 145/61 K, 81/177 D
• US Class Current: 81/436
• CPC Class Codes: B25G 1/10 characterised by material or shape B25G1/01, B25G1/02 take precedence ; for hand tools comprising coating rollers B05C17/0205
• CPC Class Codes: Y10T 74/20864 Handles

Abstract

A handle for hand tools that must be rotated during operation such as screw drivers, wrenches or the like comprises a T-shaped member including a central beam portion and a prependicular cross-bar portion. The central beam portion comprises a sleeve structure having an axially disposed blind bore adapted to receive and to be rigidly fixed to the shank of a tool at the end opposite the tool end, and the cross-beam portion comprises a handle for turning the tool. The beam portion has a shoulder adjacent the cross-bar handle portion and a bead at its lower end with a smooth generally cylindrical or slightly conical bearing surface intermediate thereof, and a sleeve is fitted around the general cylindrical surface for rotatable movement of the bearing surface during operation of the tool so that the tool can be firmly grasped and held securely in correct position by one hand of the operator grasping the sleeve while the operator uses the cross-bar handle with the other hand to rotate the handle and the tool.

Claims

1. A handle for hand tools including a shank with a tool element at one end and that must be rotated about an axis longitudinal of the shank during operation, comprising a T-shaped member including a central beam portion and a perpendicular cross-bar portion at one end of the beam portion, said central beam portion being constituted by a sleeve structure having an axially disposed blind bore adapted to receive and be rigidly fixed to a tool shank at the end opposite the tool end thereof, and the cross-beam portion constituting a handle for turning the tool, said beam portion having a smooth generally cylindrical bearing surface intermediate thereof with a bead at its free end, and a sleeve fitted around the generally cylindrical surface and retained by said bead for rotatable movement of the bearing surface during operation of the tool so that the tool can be firmly grasped and held securely in correct position by one hand of the operator grasping the sleeve while the operator uses the cross-bar handle with the other hand to rotate the handle and the tool.

2. A tool handle according to claim 1 wherein said sleeve has a smooth generally cylindrical inner surface conforming to but freely slidable rotatively on said bearing surface, the outer surface of said sleeve being rough to facilitate a firm grip by an operator.

3. A tool handle according to claim 2 wherein said T-shaped member comprises a shoulder at the juncture of said beam and cross-bar portions and at the opposite end from said bead of said bearing surface and constituting an end bearing surface for said sleeve.

4. A tool handle according to claim 3 wherein said cross-bar portion has a slightly curved smooth outer surface for engagement with the palm of an operator'"'"'s hand and an inner surface having a plurality of curved recesses for accommodating the operator'"'"'s fingers.

5. A tool handle according to claim 4 wherein said cross-bar portion has a hole opening through its sides for receiving a lever to assist in turning the handle.

6. A tool handle according to claim 3, in combination with a tool shank having a non-cylindrical configuration, said T-shaped member comprising a moldable material that is molded directly on said shank.

7. A tool handle according to claim 3 wherein said sleeve comprises a material having slight elastic characteristics to enable assembly of said sleeve over said bead onto said bearing surface.