Land vehicles: dumping – Tilting – Tilting about plural or shifting fulcrums
Patent
1999-05-11
2000-08-22
Gordon, Stephen T.
Land vehicles: dumping
Tilting
Tilting about plural or shifting fulcrums
298 175, 298 176, 298 18, B60P 116
Patent
active
061060720
ABSTRACT:
A sequential pivoting mechanism for side dumping trailers, which allows the containment vessel to be initially pivoted upon a near point and subsequently pivoted upon a far point, while still allowing the containment vessel to be dumped to either side of the trailer frame. The mechanism comprises at least one forward and one rearward support beam of substantial length, which are affixed to the longitudinal members of the trailer frame. Atop of each support beam is secured an inwardly positioned pair of pivot pin receivers, and an outwardly positioned pair of pivot pin receivers secured on each side thereof. Each receiver has an associated pivot pin secured to the sidewalls of the containment vessel, positioned in a manner as to coincide with these receivers. Each inwardly positioned receiver is provided with a hydraulically-actuated, pivot pin locking and releasing device, which can be remotely controlled and are used to selectively release either the right or left side pivot pins to allow the containment vessel to be initially rotated to the side opposite that of the released pins, when the containment vessel is acted upon by extension of the lifting cylinders. The outwardly positioned receivers are also provided with a pivot pin locking and releasing device which when actuated by contact from their associated pivot pins, cause the inwardly positioned locking devices on the dumping side to be urged into the released position. This allows for the containment vessel to be subsequently pivoted upon a far point. Conversely, after the dumping operation is complete, retraction of the lift cylinders creates a lack of contact, which allows the inwardly positioned locking devices to be drawn over their associated pivot pins. The containment vessel is completely locked in the normal transport position as the lift cylinders become fully retracted and the hydraulic pressure is released from the orginally actuated inwardly positioned locking devices, thus allowing these locking devices to be drawn over their associated pivot pins.
REFERENCES:
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patent: 4200334 (1980-04-01), Lindholm
patent: 4289353 (1981-09-01), Merritt
patent: 4494798 (1985-01-01), Bailey
patent: 5480214 (1996-01-01), Rogers
patent: 5597211 (1997-01-01), Golden
patent: 5845971 (1998-12-01), Rogers
patent: 5906417 (1999-05-01), Golden
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