Shear pin assembly for counterweights
AssigneeCaterpillar Tractor Co.
InventorBobby D. Griffith
Life of this patent
Estimating the term…
Abstract
A counterweight mounting assembly has a counterweight mounted thereon and a shear pin is extended to dispose it in aligned bores formed in the counterweight and in the frame of the vehicle. When the counterweight is lowered for removal from the vehicle, the operator first pulls on a handle secured to the shear pin to retract the shear pin into a stored position within the counterweight. First and second stops are provided between the counterweight and the shear pin to hold the shear pin at each of its extended and retracted positions.
Claims10
A shear pin assembly in combination with a counterweight adapted for mounting on a frame of a vehicle comprising
- a shear pin reciprocally mounted in a bore formed in said counterweight for movement in first and second opposite directions between an extended position whereby an end of said shear pin extends outwardly from said counterweight and a retracted position within said counterweight,
- first stop means for limiting movement of said shear pin in said first direction to hold it in its extended position,
- second stop means for limiting movement of said shear pin in said second direction to hold it in its retracted position and
- adjustable locking means separate and offset from said shear pin and mounted solely on said counterweight and attaching said shear pin to said counterweight for selectively locking said shear pin at its extended or retracted position thereon.
A vehicle comprising
- a frame,
- a counterweight mounting assembly attached on said frame,
- a counterweight removably mounted on said mounting assembly, and
- a shear pin assembly mounted on said counterweight comprising
- a shear pin reciprocally mounted in a bore formed in said counterweight for movement in first and second opposite directions between an extended position whereby an end of said shear pin extends outwardly from said counterweight and a retracted position within said counterweight,
- first stop means for limiting movement of said shear pin in said first direction to hold it in its extended position,
- second stop means for limiting movement of said shear pin in said second direction to hold it in its retracted position and
- adjustable locking means separate and offset from said shear pin and mounted solely on said counterweight and attaching said shear pin to said counterweight for selectively locking said shear pin at its extended or retracted position thereon.
Dependencies are inferred from the claim text.