Patents Assigned to Hale Fire Pump Company
  • Patent number: 4734019
    Abstract: A pumping system employing a main pump and a high pressure centrifugal pump both of which are driven by an engine through a suitable drive is provided with an air clutch device whereby air is selectively introduced into the inlet of the high pressure centrifugal pump to cause air binding of the impellers, this action causing a de-clutching of the high pressure pump by a simple hydraulic action.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: March 29, 1988
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4721029
    Abstract: A pressurized hydraulic fluid supply is arranged to supply hydraulic fluid to a plurality of rescue tools from a single power source through a series flow connector block so as to permit operation of two or more tools simultaneously.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: January 26, 1988
    Assignee: Hale Fire Pump Company
    Inventors: Kenneth F. Hoffman, Robert J. Linster
  • Patent number: 4720050
    Abstract: A comminutor and a pump are assembled together so that they are driven by the same prime mover, such as a tractor power take-off, the pump being arranged to draw liquid, such as sewage, into a comminution chamber containing a rotating hollow cylinder which functions as a combination cutter and strainer. The solids in the sewage are comminuted until they are of a size small enough to pass through openings in the cylinder into the interior thereof from which the comminuted particles are pumped to a desired location, such as an irrigated field by the pump. The pump shaft has a drive shaft extension that extends through the center of the rotating cylinder to drive a planetary gear system arranged so that the rotating cylinder is driven at a speed much less than the pump speed.
    Type: Grant
    Filed: June 18, 1982
    Date of Patent: January 19, 1988
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4715327
    Abstract: A flow system for an engine-pump assembly utilizes the engine cooling water for heating the engine carburetors to prevent icing thereof and includes a flow indicator providing a visual indication of the condition of the engine's cooling water flow.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: December 29, 1987
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4712516
    Abstract: A dual fuel supply for a rotary piston engine in which there is one fuel supply means for a running fuel of low volatility and another fuel supply for a starting fuel of high volatility. The starting fuel is contained in safe scaled pressurized cartridges. The temperature of the running fuel is raised to improve its combustion characteristics.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: December 15, 1987
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4691667
    Abstract: A spark ignition engine device adapted for use with a pump. The engine is mounted on a mounting structure. The engine has a magneto flywheel for generating an ignition current and a high-voltage ignition coil means electrically connected by a first conductive wire means to the magneto. A conductive shield covers the first wire means and is grounded. The spark plugs are electrically connected by a second conductive wires means to the coil to deliver a high-voltage spark to the engine. The second wire means is also covered by a conductive shield covering and the shield is grounded. A control box is provided and grounded to the mounting structure. The control box is positioned to enclose the coil means and to receive the shielded first wire means. The box has a capacitor means grounded to the box and connected to said shielded first wires to prevent reverse flow of EMI to the magneto.
    Type: Grant
    Filed: March 19, 1986
    Date of Patent: September 8, 1987
    Assignee: Hale Fire Pump Company
    Inventors: H. Alfred Eberhardt, Kalman Broitman, Richard A. Evangelista, Richard E. Teske, Michael Sulmone
  • Patent number: 4690613
    Abstract: A portable engine-pump assembly for use in firefighting applications is constructed of a high-speed, lightweight engine and a double-suction pump. The engine is arranged with a vertical crankshaft for driving the pump which is mounted adjacent thereto with a vertical pump shaft coupled to the crankshaft. The assembly is designed to provide high lift, high efficiency and a steady high flow volume and to be compact and light in weight.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: September 1, 1987
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4676065
    Abstract: A portable engine-pump assembly for use in firefighting applications is constructed of a high-speed, lightweight engine and a double-suction pump. The engine is arranged with a vertical crankshaft for driving the pump which is mounted adjacent thereto with a vertical pump shaft coupled to the crankshaft. The assembly is designed to provide high lift, high efficiency and a steady high flow volume and to be compact and light in weight.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: June 30, 1987
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4653978
    Abstract: A relief valve system for a pump in which control means are responsive to the occurrence of an excessive pressure on the inlet or discharge side of the pump to relieve this condition by dumping excess pressure to atmosphere.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: March 31, 1987
    Assignee: Hale Fire Pump Company
    Inventors: H. Alfred Eberhardt, Kenneth F. Hoffman
  • Patent number: 4643652
    Abstract: A portable engine-pump assembly for use in firefighting applications is constructed of a high-speed, lightweight engine and a double-suction pump. The engine is arranged with a vertical crankshaft for driving the pump which is mounted adjacent thereto with a vertical pump shaft coupled to the crankshaft. The assembly is designed to provide high lift, high efficiency and a steady high flow volume and to be compact and light in weight.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: February 17, 1987
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4633895
    Abstract: Apparatus is described for admixing a foam-liquid solution with water in a predetermined proportion for use in a foam-water fire fighting system. The arrangement is such that the water supply line of the apparatus takes water out of the fire main and uses this water pressure to work a piston to develop pressure of the foam liquid so as to boost up this foam liquid pressure to a pressure that slightly exceeds the water pressure in the fire main.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: January 6, 1987
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4587862
    Abstract: A transmission for a pump is constructed of an input member rotatably mounted in a housing and including a splined shaft portion and an input flange portion, an output member rotatably mounted in the housing in axial alignment with the input member and including a splined shaft portion and an output flange portion, and a sliding gear slidably mounted on the splined shaft portion of the input member at an internal splined portion thereof and having externally facing gear teeth. The sliding gear is movable between a "ROAD" position wherein its internal splined portion engages both the splined shaft portions of the input member and the output member and a "PUMP" position wherein its internal splined portion only engages the splined shaft portion of the input member and the gear teeth thereof are in engagement with gear means for driving the pump shaft.
    Type: Grant
    Filed: July 10, 1983
    Date of Patent: May 13, 1986
    Assignee: Hale Fire Pump Company
    Inventor: Kenneth F. Hoffman
  • Patent number: 4570605
    Abstract: A dual fuel supply for a piston engine in which there is one fuel supply means for a running fuel of low volatility and another fuel supply for a starting fuel of high volatility. The starting fuel is contained in safe scaled pressurized cartridges. The temperature of the running fuel is raised to improve its combustion characteristics.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: February 18, 1986
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4506445
    Abstract: A lightweight, fluid-powered, portable rescue cutter tool for applying a high magnitude cutting force is disclosed comprising a body having a longitudinal axis including a fluid cylinder and a forward end structure, and a pair of cutting blades pivotally connected to the forward end structure. Fluid-actuated force means are movable along the longitudinal axis of the body and linking means, asymmetrically secured to the cutting blades and interconnecting the fluid actuated force means with the cutting blades, are utilized for pivoting the cutting blades between non-cutting open and closed cutting positions. Handles are provided for manipulating and supporting the rescue cutter tool and control means are provided adjacent one of the handles for controlling the fluid-actuated force means to pivot the cutting blades between non-cutting and cutting positions as desired.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: March 26, 1985
    Assignee: Hale Fire Pump Company
    Inventor: Harold Esten
  • Patent number: 4503812
    Abstract: A portable engine-pump unit is provided with a charging system for maintaining a rechargeable starter battery in a fully charged condition while it is held in a stored position. The starter battery is used to energize heaters for raising the temperature of the engine fuel supply when the unit is removed from the stored position.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: March 12, 1985
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4448256
    Abstract: A foam liquid proportioner including a positive displacement water motor coupled to a positive displacement foam liquid pump is provided with a gear drive mechanism which steps up the RPM of the foam liquid pump to be much higher than the RPM of the water motor to a speed so as to reduce the ratio of the slippage of foam liquid to the total flow of the foam liquid through the foam liquid pump.
    Type: Grant
    Filed: January 28, 1982
    Date of Patent: May 15, 1984
    Assignee: Hale Fire Pump Company
    Inventors: H. Alfred Eberhardt, Kenneth F. Hoffman, Raymond R. Petersen
  • Patent number: 4351391
    Abstract: A heat exchanger for cooling engine coolant is arranged to use the main pump water flow as the cooling medium, is located on the suction side of the main pump, and is constructed of a finned casting with fins extending from a tubular portion of the casting body into a heat exchange chamber.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: September 28, 1982
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4337830
    Abstract: A pump assembly for use in fire fighting service is constructed of a single stage main pump and a two stage booster pump connected in series with the discharge of the main pump being connected to a first high flow rate fire fighting application and to the inlet of the booster pump and the discharge of the booster pump being connected to a second low flow high pressure fire fighting application. The impellers for both the main pump and the booster pump are mounted on a common rotating shaft so as to be driven thereby. A flow restriction and conduit means is provided to reduce the pressure on the booster pump seal. A by-pass conduit is arranged to conduct flow from the discharge of the booster pump back to the inlet of the main pump so that whenever the main pump is operated there will be flow through the booster pump to prevent overheating thereof.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: July 6, 1982
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4311440
    Abstract: A vacuum pump adapted to be used as a priming pump comprising a pump assembly and a motor assembly both of which are secured to a mounting head located therebetween. The motor assembly includes a housing and a motor shaft extending a substantial extent from the housing. The mounting head has a bore aligned with the central bore of the rotor of the pump assembly. The motor assembly is secured to the mounting head with the motor shaft extending through the bore in the mounting head into the central bore of the rotor for driving the same.
    Type: Grant
    Filed: January 5, 1977
    Date of Patent: January 19, 1982
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt
  • Patent number: 4245952
    Abstract: A centrifugal pump is constructed of a cast iron impeller and corrosion resistant means for providing a minimal clearance space between the impeller and the volute body of the pump in the form of a clearance ring mounted in the volute body to cooperate with a stainless steel tubular insert member cast into the impeller hub. The clearance ring may comprise a bendable ring which may be compressed from its normal condition to fit into a bore in the volute body so as to spring outwardly into its mounted position.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: January 20, 1981
    Assignee: Hale Fire Pump Company
    Inventor: H. Alfred Eberhardt