Tool handles having wear indication

• US 5,279,140 A
• Filed: 05/18/1992
• Issued: 01/18/1994
• Est. Priority Date: 05/18/1992
• Status: Expired due to Term

• Current Assignee: Hubbell, Inc.
• Original Assignee: Burndy Corporation (Amphenol Corporation)
• Inventors: Blake, Mark W., Chadbourne, Christopher G., Pecora, Gennaro L.
• Primary Examiner(s): Crane, Daniel C.
• Application Number:
  US07/884,674
• Time in Patent Office: 610 Days
• Field of Search: 72/410, 72/409, 72/31, 72/35, 81/DIG. 5, 81/427.5, 403/27, 29/751, 76/119
• US Class Current: 72/31.01
• CPC Class Codes: B25B 7/00 Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools implements for fastening, connecting, or tensioning wire or strip B25B25/00; adapted for other fitting or separating purposes B25B27/00; for marking animals A01K11/00; dentists' forceps A61C3/00; bending wire eyes B21F1/06; hand-held metal-shearing or metal-cutting devices B23D29/00; hand cutting tools B26B; for punching or perforating B26F1/36; devices for securing ends of binding material in bundling machines B65B13/24; specially designed for watch-making or comparable work G04D1/00
• CPC Class Codes: B25B 7/06 Joints
• CPC Class Codes: Y10T 29/53226 Fastening by deformation
• CPC Class Codes: Y10T 403/20 with indicator or inspection means

Abstract

A hand operated tool is provided having a working head and a pair of handles. The handles are operably connected to each other and to the working head. The handles are each made of a one-piece polymer member which can indicate wear of the handles at their connection to each other.

Claims

1. A hand operated compression tool comprising:

a working head; and

a pair of handles operably connected to each other and to the working head, the handles each comprising a one-piece polymer member substantially identical to each other and merely reversed relative to each other in order to mate, the handles further comprising means for indicating wear of the handles at their connection to each other including a link connected to each handle having a marking and at least one of the handles having a marking, the markings being adapted to indicate excessive wear of the handles.

2. A tool as in claim 1 wherein the handles each have a connection end with a first side having a projecting section and an adjacent recessed section.

3. A tool as in claim 2 wherein the projecting section has a hole therethrough.

4. A tool as in claim 2 wherein the projecting sections of each handle are located adjacent each other with their holes aligned and a pin located therein.

5. A tool as in claim 1 wherein the tool has two links, each link located on an opposite side of the handles.

6. A compression tool handle for use with a second handle and a working head of a compression tool, the handle comprising:

a hand grip section at a first end;

a shaft section extending from the hand grip section; and

a connection section at a second end of the shaft section, the connection section having at least one wear surface adapted to wear away during use of the handle, a second recess for receiving a portion of a first link, a third recess for receiving a portion of a second link, and a hole, the sides of the hole acting as the wear surface, the handle being comprised of a single polymer member and having a hamaphrodidic design such that two of the handles can be connected to each other in reverse fashion, and further comprising a marking on the side of the connection section adapted to indicate excessive wear of the wear surface.

7. A method of manufacturing a hand operated tool, the method comprising steps of:

providing two handles, each handle having means for connecting a portion of a working head thereto, each handle being comprised of a hamaphrodidic one-piece polymer member;

connecting the two handles to each other to provide for pivotal motion therebetween, the connection comprising a member being positioned in a hole of each hand, a side of the hole forming a wear surface, and a portion of each handle having a surface perpendicular to its hole that is adapted to slide substantially freely upon a cooperating surface of the other handle; and

connecting two strengthening links to the handles, one of the links on each side of the handles, the links and handles comprising indicia to indicate excessive wear of the wear surfaces.

8. A method as in claim 7 wherein the step of connecting comprises removably connecting the handles to each other.

9. A method as in claim 7 where in the step of connecting comprises permanently connecting the handles to each other.