Back to results
US 6,659,531 B2Granted
Rebalancing circuit for a truck cover sliding pivot
OwnerTimothy K. Searfossinventor
Life of this patent
Estimating the term…
Abstract
A hydraulic circuit comprises first and second cylinders, and a piston disposed in each of the cylinders. A pump communicates with one side of one of the pistons, and a pressure relief valve has a position wherein the pump communicates with another side of the one piston and with the other piston.
Claims20
An apparatus for moving one and an other cylinders disposed on opposite sides of a truck, the apparatus comprising:
- a pump adapted to pump fluid to one end of the one of the cylinders;
- and
- a pressure relief valve in communication with the pump and having a first position wherein the pump is adapted to pump fluid through the pressure relief valve to another end of the one cylinder and to the other cylinder.
A hydraulic circuit comprising:
- first and second cylinders;
- a piston disposed in each of the cylinders;
- a pump adapted to pump fluid to one side of one of the pistons;
- and
- a pressure relief valve having a first position wherein the pump communicates through the pressure relief valve with another side of the one piston and with the other piston.
2 more elements
An apparatus for moving a cover over a bed of a truck, the apparatus comprising:
- a pair of bows, each bow having a first end connected to a cylinder and a second end connected to the cover;
- a pump adapted to pump fluid to one end of one of the cylinders;
- and
- a pressure relief valve in communication with the pump and having a first position wherein the pump is adapted to pump fluid through the pressure relief valve to another end of the one cylinder and to the other cylinder.
1 more element
Dependencies are inferred from the claim text.