Back to results
US 5,243,761 AGranted
Portable rescue tool
AssigneeHale Fire Pump Company
InventorsKevin Sullivan, Arnold E. Redsicker, Thomas W. Hotchkiss
Life of this patent
Estimating the term…
Abstract
A rescue tool as incorporated into a portable unit both the tool operating mechanism and the hydraulic power means necessary to provide a self-contained tool. An elongated tool body comprises the rescue tool mechanism and its associated hydraulic actuator unit, an air/oil intensifier pump for driving the hydraulic actuator unit, the control valves for the pump, and an air valve for actuating the hydraulic control valves to their control positions, whereby the only hose connection to the portable unit is a single air hose for supplying high pressure air.
Claims11
A portable rescue tool adapted for use with a supply of high pressure air comprising,
- an elongated tool body having a rescue tool mechanism mounted at one end thereof;
- a hydraulic actuator unit mounted on said tool body and operatively connected to said rescue tool mechanism for actuating the same through a rescue operation,
- said hydraulic actuator unit including a conduit means for delivering high pressure hydraulic fluid thereto for causing operation thereof;
- and
- power means mounted on said tool body for pumping hydraulic fluid at a high pressure through said conduit means for causing operation of said hydraulic actuator unit,
- said power means including
- a air/oil intensifier pump including an air section having an air inlet line and an oil section having an oil discharge, and being constructed and arranged to be responsive to the delivery of high pressure air to said air section by way of said air inlet to pump oil at a high pressure from said oil section through said oil discharge,
- first control means for controlling a flow of air to said air inlet line including
- an air supply inlet for receiving high pressure air from the supply thereof,
- an air supply conduit means for delivering air from said air supply inlet to said inlet line of said air/oil intensifier pump, and
- first valve means for controlling the flow of air through said air supply conduit means, and
- second control means for controlling the flow of oil from said oil discharge of said air/oil intensifier pump to said conduit means of said hydraulic actuator unit including
- an oil supply conduit means for delivering oil from said oil discharge of said air/oil intensifier pump to said conduit means of said hydraulic actuator unit, and second valve means for controlling the flow of oil through said oil supply conduit means,
- whereby the portable rescue tool is a self-contained unit including a hydraulic actuator unit for the rescue tool mechanism and integrated power means for operating said hydraulic actuator unit.
11 more elements
A portable rescue tool adapted for use with a supply of high pressure fluid comprising,
- an elongated tool body having a rescue tool mechanism mounted at one end thereof;
- a hydraulic actuator unit mounted on said tool body and operatively connected to said rescue tool mechanism for actuating the same through a rescue operation,
- said hydraulic actuator unit including a conduit means for delivering high pressure hydraulic fluid thereto for causing operation thereof;
- and
- power means mounted on said tool body for pumping hydraulic fluid at a high pressure through said conduit means for causing operation of said hydraulic actuator unit,
- said power means including
- an intensifier pump including an air section having an inlet line and a fluid section having a fluid discharge, and being constructed and arranged to be responsive to the delivery of pressurized fluid to said inlet section by way of said inlet line to pump fluid at a high pressure from said fluid section through said fluid discharge,
- first control means for controlling a flow of fluid to said pump inlet line including a fluid supply inlet for receiving pressurized fluid from the supply thereof, and
- second control means for controlling the flow of fluid from said fluid discharge of said intensifier pump to said conduit means of said hydraulic actuator unit including
- a fluid conduit means for delivering fluid from said fluid discharge of said intensifier pump to said conduit means of said hydraulic actuator unit, and
- second valve means for controlling the flow of fluid through said fluid supply conduit means,
- whereby the portable rescue tool is a self-contained unit including a hydraulic actuator unit for the rescue tool mechanism and integrated power means for operating said hydraulic actuator unit.
9 more elements
A portable rescue tool adapted for use with a supply of high pressure gas comprising,
- an elongated tool body having a rescue tool mechanism mounted at one end thereof,
- a hydraulic actuator unit mounted on said tool body and operatively connected to said rescue tool mechanism for actuating the same through a rescue operation,
- said hydraulic actuator including a conduit means for delivering high pressure hydraulic fluid thereto for causing operation thereof;
- and
- power means mounted on said tool body for pumping hydraulic fluid at a high pressure through said conduit means for causing operation of said hydraulic actuator unit,
- said power means including
- a gas/fluid intensifier pump including a compressed gas section having a gas inlet line and a fluid section having a fluid discharge, and being constructed and arranged to be responsive to the delivery of high pressure gas to said gas section by way of said gas inlet line to pump fluid at a high pressure from said fluid section through said fluid discharge,
- first control means for controlling a flow of gas from the supply thereof,
- a gas supply conduit means for delivering gas from said gas supply inlet to said gas inlet line of said intensifier pump, and
- first valve means for controlling the flow of gas through said gas supply conduit means, and
- second control means for controlling the flow of fluid from said fluid discharge of said intensifier pump to said conduit means of said hydraulic actuator unit including
- a fluid conduit means for delivering fluid from said fluid discharge of said intensifier pump to said conduit means of said hydraulic actuator unit, and
- second valve means for controlling the flow of fluid through said fluid conduit means,
- whereby the portable rescue tool is a self-contained unit including a hydraulic actuator unit or the rescue tool mechanism and integrated power means for operating said hydraulic actuator unit.
11 more elements
Dependencies are inferred from the claim text.