Hydraulic log splitter
AssigneeAuto Specialties Manufacturing Company
InventorWilliam F. Nordlin
Life of this patent
Estimating the term…
Abstract
A manually operated log splitter is provided. The log splitter comprises a bi-ended main beam, a splitter wedge fixed at one end of the main beam, and manually operated hydraulic power means fixed to the other end of the beam. In accordance with the invention, this hydraulic power means includes a ram reciprocably moveable toward and away from the splitter wedge. A manually operated low pressure, high volume pump and a manually operated high pressure, low volume pump urge the ram toward the wedge. Automatically operable release valve means relieves pressure from the high pressure, low volume pump to the reservoir when necessary.
Claims7
A manually operated log splitter, comprising a bi-ended main beam, a splitter wedge fixed at one end of the main beam, and manually operated hydraulic power means fixed to the other end of the main beam and having a ram reciprocably movable at least partly out of and away from a pressurizable ram chamber toward the splitter wedge for urging logs against the wedge to split them, the manually operated power means further comprising a plurality of independent manually operated reciprocating pumps for urging the ram toward the wedge, automatically operable relief valve means and fluid conduit means providing a fluid passage between one of the manually operated pumps and a reservoir but functionally independent of the other pump for relieving pressure from that pump only to the reservoir, and manually operable relief valve means separate from the automatically operable relief valve means and in fluid communication with the ram chamber and reservoir.
A manually operated log splitter, comprising a bi-ended main beam, a splitter wedge fixed at one end of the main beam, and manually operated hydraulic power means fixed to the other end of the main beam and having a ram reciprocably movable at least partially out of a pressurizable ram chamber toward the splitter wedge for urging logs against the wedge to split them, the manually operated power means further comprising a hydraulic fluid reservoir, a low pressure-high volume pump manually operable for urging the ram toward the wedge quickly but with low splitting force, a high pressure-low volume pump manually operable independently of the low pressure-high volume pump for urging the ram toward the wedge slowly but with high splitting force, automatically operable relief valve means for relieving pressure from the high pressure-low volume pump to the reservoir, and manually operable relief valve means separate from the automatically operable relief valve means and in fluid communication with the ram chamber and reservoir.
A hydraulic device, comprising a ram, a ram cylinder, a hydraulic fluid reservoir, a low pressure-high volume pump manually operable for extending the ram out of the cylinder with low force, a high pressure-low volume pump manually operable independently of the low pressure-high volume pump for extending the ram out of the cylinder with high force, automatically operable relief valve means for relieving pressure from the high pressure-low volume pump only to the reservoir, and manually operable relief valve means separate from the automatically operable relief valve means and in fluid communication with the ram chamber and reservoir.
Dependencies are inferred from the claim text.