Hammerless mechanically attached adapter system

• US 6,301,810 B1
• Filed: 10/01/1999
• Issued: 10/16/2001
• Est. Priority Date: 10/01/1999
• Status: Expired due to Term

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Fidler, Jerry D.
• Primary Examiner(s): Pezzuto, Robert E.
• Assistant Examiner(s): Markovich, Kristine M
• Application Number:
  US09/411,611
• Time in Patent Office: 746 Days
• Field of Search: 374/57, 374/58, 374/55
• US Class Current: 37/458
• CPC Class Codes: E02F 9/2825 using adapters
• CPC Class Codes: E02F 9/2833 Retaining means, e.g. pins

Abstract

A hammerless mechanical attachment system comprising a C-clamp member, a first wedge member, a second wedge member and a threaded tensioning device for attaching a tooth adapter to a base cutting edge of an implement. The C-clamp member has a generally C-shaped body with a forwardly facing abutment surface and a forwardly extending flange having a threaded aperture therein. The first wedge member has a forward side having a first wedge surface thereon, an opposite rearward side having a second abutment surface thereon positionable against the first abutment surface of the C-clamp member, and a through bolt hole disposed along a longitudinal axis parallel to the second abutment surface. The bolt hole is disposed in alignment with the threaded aperture in the flange when the second abutment surface is placed in abutment with the first abutment surface of the C-clamp. The second wedge member has a rearwardly facing side having a second wedge surface thereon and a forwardly facing side having a third abutment surface thereon. The second wedge surface is positionable in abutting relationship with the first wedge surface of the first wedge member. The threaded tensioning device is disposed through the bolt hole in the first wedge member and threadably engaged with the threaded aperture in the flange of the C-clamp member, whereby the second wedge member is caused to move in a forward direction upon tightening of the threaded tensioning device for securing the adapter to the base edge.

Claims

1. A hammerless mechanical attachment system for attaching a tooth adapter to a base cutting edge of an implement, said hammerless mechanical attachment system comprising:

a C clamp member having a generally C-shaped body with a forwardly facing abutment surface and a forwardly extending flange having a threaded aperture therein;

a first wedge member having a forward side having a first wedge surface thereon, an opposite rearward side having a second abutment surface thereon positionable against said first abutment surface of said C clamp member, and a through bolt hole disposed along a longitudinal axis parallel to said second abutment surface but in a non-parallel relationship to said first wedge surface, said bolt hole being disposed in alignment with said threaded aperture in the flange when the second abutment surface is placed in abutment with said first abutment surface of the C-clamp;

a second wedge member having a rearwardly facing side having a second wedge surface thereon and a forwardly facing side having a third abutment surface thereon, said second wedge surface being positionable in abutting relationship with said first wedge surface of said first wedge member; and

a threaded tensioning device disposed through said bolt hole in said first wedge member and threadably engaged with said threaded aperture in said flange of said C-clamp member, whereby said second wedge member is caused to move in a forward direction upon tightening of said threaded tensioning device for securing said adapter to said base edge.

2. The hammerless mechanical attachment system of claim 1 wherein said first wedge member has a top end and a bottom end and wherein said first wedge surface angles outwardly from the bottom end toward said top end.

3. The hammerless mechanical attachment system of claim 2 wherein said second wedge member has a top end and a bottom end and wherein second wedge surface thereon angles upwardly and inwardly from said bottom end toward said top end.

4. The hammerless mechanical attachment system of claim 3 wherein said forwardly extending flange of said C-clamp member has a upper surface disposed in a perpendicular relationship to said first abutment surface thereon, and wherein said bottom end of said second wedge member is positionable against said upper surface.

5. The hammerless mechanical attachment system of claim 4 wherein said base cutting edge has a leading edge and an elongate slot, said slot being spaced from said leading edge and an end adjacent said leading edge defining a fourth abutment surface, and wherein said third abutment surface of said second wedge is positionable in abutting engagement against said fourth abutment surface.

6. The hammerless mechanical attachment system of claim 5 wherein said adapter includes a rearwardly extending upper strap and a rearwardly extending lower strap, said upper strap having a first elongated slot, while the lower strap is provided with a second elongated slot, the first and second slots each having a rearward end and each being disposed in general alignment with said elongate slot in the base edge, and wherein said C-clamp member is positionable in said slots and adapted to engage said upper and lower straps at the rearward ends of said first and second slots in said straps.

7. A hammerless mechanical attachment system for attaching a tooth adapter to a base cutting edge of an implement, said base cutting edge having a leading edge and an elongated slot spaced from the leading edge, said slot having an abutment surface at its end adjacent the leading edge, said adapter having a bifurcated rearward end portion having a rearwardly extending upper strap positionable along the upper surface of the base edge and a rearwardly extending lower strap positionable along the lower surface thereof, said upper strap having a first elongated slot, while the lower strap is provided with a second elongated slot aligned with the first slot such that when the adapter is properly mounted onto the base edge, the first and second slots are also disposed in general alignment with said elongate slot in the base edge, said hammerless mechanical attachment system comprising:

a C-clamp member having a generally C-shaped body with a forwardly facing first abutment surface, a forwardly extending flange with a upper surface adjoining and disposed in a perpendicular relationship to the forwardly facing first abutment surface, and a threaded aperture in said flange;

a first wedge member having a top end and a bottom end, with a through bolt hole disposed along a longitudinal axis from the top to the bottom ends, a rearward side having second abutment surface disposable along said forwardly facing first abutment surface of said C-clamp member, and an opposite forward side having a first wedge surface thereon, said bolt hole being disposed in alignment with said threaded aperture in the flange when the second abutment surface is placed in abutment with said first abutment surface of the C-clamp, said second abutment surface being substantially parallel to the longitudinal axis of the bolt hole;

a second wedge member having a top end and a bottom end, with the bottom end being disposable in abutting relation to the upper surface of the flange of the C-clamp, said second wedge also having a rearwardly facing side having a second wedge surface thereon and a forwardly facing side having a third abutment surface thereon, said second wedge surface being positionable in abutting relationship to the first wedge surface of the first wedge, said third abutment surface being adapted to abut the abutment surface at the forward end of the elongate slot in the base edge; and

a threaded tensioning device disposed through said bolt hole in said first wedge member and threadably engaged with said threaded aperture in said flange of said C-clamp member, whereby second wedge member is caused to move in a forward direction upon tightening of said threaded tensioning device for securing said adapter to said base edge.