Machine element or mechanism – Mechanical movements – Reciprocating to or from oscillating
Patent
1992-04-20
1993-04-13
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Reciprocating to or from oscillating
414708, 414917, F16H 2144
Patent
active
052012352
ABSTRACT:
The present invention is directed to a linkage connectable between a frame and an attachment. The linkage is characterized as self-leveling, meaning that once an attitude or orientation of the attachment with respect to the ground is achieved, the linkage will maintain that attitude as the attachment is raised or lowered without additional operator input. A preferred linkage connectable between the frame of a loader vehicle and a loader bucket includes an arm pivotally connectable between the frame and bucket, a hydraulic lift cylinder pivotally connectable between the frame and arm for raising and lowering the arm and resultantly the bucket, an equalizer link pivotally connectable to the arm at the same location as the lift cylinder, a hydraulic tilt cylinder pivotally connectable between the bucket and one end portion of the equalizer link, and an equalizer bar pivotally connectable between the frame and the other end portion of the equalizer link. If the tilt cylinder is held stiff as the bucket is raised or lowered, the parallelogram action of the frame, lift arm, equalizer link and equalizer bar will be imparted to the parallelogram of the tilt cylinder, bucket, lift arm and equalizer link and will thereby automatically adjust the tilt of the bucket as it is raised or lowered to thereby maintain its original attitude with the ground. A common pivotal location of the lift cylinder and equalizer link eliminates unnecessary parts and fabrication.
REFERENCES:
patent: 2883077 (1959-04-01), Pilch
patent: 3578191 (1971-05-01), Horsch
patent: 3606060 (1971-09-01), Fleming et al.
patent: 4486141 (1984-12-01), Pescarmona
patent: 4709588 (1987-12-01), Cordes et al.
Production Training Bulletin, 926E & IT28B Vs. Competition Teardown, TEJB1020, Caterpillar Inc., Sep. 1991.
Competitive Bulletin, Caterpillar 416 Vs. Case 580K, Caterpillar Inc., TECB4068, May 1988.
Competitive Bulletin, Caterpillar 416 Vs. Ford 55B, Caterpillar Inc., TECB4054, Nov. 1985.
Competitive Bulletin, CAT 446 Vs. Dynahoe 490 Backhoe Loader, Caterpillar Inc., TECB4072, Dec. 1989.
Blumenshine J. Wesley
Caterpillar Inc.
Herrmann Allan D.
Laub David W.
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