Folding hand tool set

• US 5,970,828 A
• Filed: 07/02/1998
• Issued: 10/26/1999
• Est. Priority Date: 02/14/1996
• Status: Expired due to Term

• Current Assignee: Bondhus Corporation
• Original Assignee: Bondhus Corporation
• Inventors: Blackston, Michael D., Bondhus, John R., Petroske, Mark L., Bondhus, Barry, Burda, Dennis A.
• Primary Examiner(s): Scherbel, David A.
• Assistant Examiner(s): DANGANAN, JONI BALDOS
• Application Number:
  US09/109,735
• Time in Patent Office: 481 Days
• Field of Search: 81/439, 81/440, 81/177.1, 81/177.4, 81/489, 81/490, 81/900, 7/118, 7/167, 7/168
• US Class Current: 81/440
• CPC Class Codes: B25B 13/56 Spanner sets
• CPC Class Codes: B25B 15/008 Allen-type keys
• CPC Class Codes: B25F 1/04 wherein the elements are brought into working positions by a pivoting or sliding movement
• CPC Class Codes: B25G 1/085 for screwdrivers, wrenches or spanners
• CPC Class Codes: B26B 1/02 with pivoted blade
• CPC Class Codes: B26B 11/00 Hand knives combined with other implements, e.g. with corkscrew, with scissors, with writing implement combined table-ware A47G21/06
• CPC Class Codes: B26B 11/001 of the Swiss-knife type
• CPC Class Codes: Y10S 81/90 Wrench or screwdriver constructed from specific material

Abstract

A folding hand tool set having a one-piece, completely integral, plastic handle and a plurality of hand tools rotatably mounted thereto. The one-piece, completely integral, plastic handle is preferably constructed from a fiber reinforced thermoplastic. In one embodiment, spacers are provided for mechanically isolating the hand tools. The folding hand tool set is capable of transmitting more then 110.0 Newton·meters of torque without compromising the integrity of the one-piece, completely integral plastic handle. The present invention is also directed to a one-piece, completely integral, plastic handle for receiving hand tools. The handle can withstand at least 30 Newton·meters of torsional force without compromising the integrity of the handle.

Claims

1. A folding hand tool set, comprising:

a one-piece, completely integral, plastic handle constructed from a polymeric material including first and second elongated side walls having an outer gripping surface arranged in a generally parallel configuration and joined along an inner surface thereof by a center rib, at least a portion of the center rib having a non-planar cross section along a longitudinal axis of the handle, the elongated side walls defining at least one mounting end, the center rib being positioned to form at least one recess for receiving hand tools along the longitudinal axis; and

a plurality of hand tools rotatably mounted to the at least one mounting end, the hand tools being rotatable from a first position within the at least one recess to a second extended position.

2. The apparatus of claim 1 wherein the center rib further comprises a reinforcing web proximate the at least one mounting end forming a portion of the at least one recess.

3. The apparatus of claim 2 wherein the reinforcing web forms an end-stop for at least one of the hand tools when in the second extended position.

4. The apparatus of claim 1 wherein the second extended position of at least one of the hand tools is approximately 270 degrees from the first position.

5. The apparatus of claim 1 wherein the polymeric material comprises a fiber reinforced thermoplastic material.

6. The apparatus of claim 5 wherein the fibers are oriented generally parallel to the longitudinal axis of the handle.

7. The apparatus of claim 5 wherein the fibers are selected from a group consisting of aramid, carbon, glass, polyester or mica, or combinations thereof.

8. The apparatus of claim 1 wherein torque of at least 110.0 Newton·

meters may be transmitted through the handle to one of the hand tools without compromising the integrity of the one-piece, completely integral, handle.

9. The apparatus of claim 1 wherein torque of at least 120.0 Newton·

meters may be transmitted through the handle to one of the hand tools without compromising the integrity of the one-piece, completely integral, handle.

10. The apparatus of claim 1 wherein at least a portion of the gripping surface is curved inward toward the center rib proximate a center portion, to cantilever a portion of torsional forces generated when using the tool set from the mounting end toward the center rib.

11. The apparatus of claim 1 further including spacer means for rotationally isolating at least two adjacent hand tools.

12. The apparatus of claim 11 wherein the spacer means comprise spacers integrally formed in the handle rotationally isolating at least two adjacent hand tools.

13. The apparatus of claim 11 wherein the spacer means comprise discrete spacer elements fixedly engaged with the handle and positioned between at least two of the plurality of hand tools proximate at least one of the mounting ends.

14. The apparatus of claim 1 wherein the handle further comprises a plurality of spacers integrally formed in the handle to rotationally isolated at least two adjacent hand tools.

15. The apparatus of claim 1 wherein the at least one recess comprises two recesses.