Patents Represented by Law Firm Hofgren, Wegner, Allen, Stellman & McCord
  • Patent number: 4059125
    Abstract: A novel structure of pressure container is disclosed, wherein a safety valve is provided within an air injection valve of said pressure container, whereby even when the ambient atmosphere of said accumulator has been heated up to a high temperature because of a fire and the like, bursting of said pressure container may be prevented. A valve seat is formed inside of a valve casing and a fusible valve member is brought in contact with said valve seat, so that when the ambient temperature of said pressure container has been raised said fusible valve member may fuse to permit the gas pressure in the pressure container to be discharged to the exterior of the container.
    Type: Grant
    Filed: November 9, 1973
    Date of Patent: November 22, 1977
    Inventors: Nobuyuki Sugimura, Kazuo Sugimura
  • Patent number: 4020872
    Abstract: In an accumulator consisting of a high pressure cylindrical oil vessel and a gas bladder of same figure concentrically housed therein, at the bottom of said gas bladder is provided a cushion cup with its opening upside, when the gas bladder expands in a longitudinal direction said cushion cup comes to directly contacts a poppet valve provided at the port of said oil vessel so that the bladder is not ruptured and when the gas bladder contracts in a longitudinal direction, said gas bladder can get away easily from the poppet valve.
    Type: Grant
    Filed: November 13, 1975
    Date of Patent: May 3, 1977
    Inventors: Nobuyuki Sugimura, Kazuo Sugimura
  • Patent number: 4008731
    Abstract: A counterbalance valve assembly for controlling the lowering of an actuator driven load including a housing with a passage connected to deliver fluid to or from one side of the actuator. A main pilot-operated lock check valve is provided in this passage to selectively block flow from the actuator when it is desired that the load be held and also to move to an open position permitting return flow from the actuator with the open valve defining an orifice. The speed of the load is controlled by maintaining a constant pressure drop across this orifice with a compensator valve upstream of the main check valve, which serves the purpose of throttling flow from the actuator to the check valve.
    Type: Grant
    Filed: March 8, 1971
    Date of Patent: February 22, 1977
    Assignee: I-T-E Imperial Corporation
    Inventor: Sherwin D. Katz
  • Patent number: 4005760
    Abstract: A vehicle, such as a tractor, having propelling wheels connected by a differential, together with a traction control device for connecting the propelling wheels directly when the differential permits relative motion between the propelling wheels, including a rotatable shaft having friction rollers secured thereon at axially spaced positions to engage the propelling wheels, lever means pivotally mounted on the vehicle chassis and having bearings for supporting the rotatable shaft, and handle means connected with the lever means for moving the friction rollers into contact with the propelling wheels.
    Type: Grant
    Filed: May 14, 1973
    Date of Patent: February 1, 1977
    Inventor: Ralph R. Gunderson
  • Patent number: 3994689
    Abstract: A bubble oxygenator having a generally cubic exterior housing with a gas dispersion system having a one-way valve that prevents the backflow of blood into the oxygen supply. At one end of the oxygenator housing is a generally vertically extending bubble chamber having a movable wall to vary the flow capacity of the oxygenator. Formed separately from the bubble or oxygenating chamber is a generally horizontally extending bubble collection chamber in the top of the cubic housing. The bubble collection chamber is formed by a rectangular envelope shaped, defoaming mesh and filter assembly. A planar temperature controlled ramp receives debubbled blood from the bubble collection chamber and directs it in planar fashion downwardly toward a reservoir.
    Type: Grant
    Filed: October 31, 1973
    Date of Patent: November 30, 1976
    Inventor: Richard A. DeWall
  • Patent number: 3992014
    Abstract: A silane is included in a homogeneous golf ball composition which is based on a cross-linked rubber polymer. The silane increases velocity of the golf ball when struck by a club. Such silanes have the formula R--Si(OR')(OR") (OR'") wherein each R is organic. Usually R', R" and R'" will be hydrocarbon and R will usually contain a functional group such as mercapto, amino, acrylic, epoxy and/or ether group.
    Type: Grant
    Filed: October 22, 1969
    Date of Patent: November 16, 1976
    Assignee: Brunswick Corporation
    Inventor: David Thomas Retford
  • Patent number: 3982563
    Abstract: A clamp-on valve structure for use in dispensing pressurized fluid from a can having an annular projecting lip. The valve structure includes mounting structure having a manipulatable portion which is effectively locked to prevent removal of the valve structure from the can with the valve installed on the mounting structure.
    Type: Grant
    Filed: January 2, 1974
    Date of Patent: September 28, 1976
    Assignee: Imperial-Eastman Corporation
    Inventors: Leonard J. Kowal, Robert C. Gibson
  • Patent number: 3982371
    Abstract: A panel holding structure for a panel such as a glass window pane that includes a frame, a retaining step on the frame against which the panel is pressed, an elongated glazing stop engaging a side of the panel that is opposite the step with the glazing stop having a rigid stem positioned in a groove in the frame and extending therefrom adjacent to the surface of the panel that is opposite the step, pressure devices on the stem both within the groove and externally thereof and engaging both the panel and the groove surface for aid in retaining the stem in the groove and the panel against the step and a rigid flange on this stem extending away from the panel and overlying and engaging a portion of the frame that is adjacent the groove for resisting outward movement of the glazing stop by the pressure of the window thereagainst. The disclosure also includes the device including the elongated glazing stop that engages the panel and retains it upon a frame.
    Type: Grant
    Filed: May 2, 1973
    Date of Patent: September 28, 1976
    Assignee: Scovill Manufacturing Company
    Inventor: Willi Preu
  • Patent number: 3980303
    Abstract: A structure for playing a game including a sheet of material adapted to be retained against a wall surface, and a plurality of darts having forwardly projecting barbs adapted to hook into the front surface of the sheet. The sheet may be suitably marked to define a game playing field, such as for scoring. The darts include a resilient pad for absorbing inertia forces to facilitate retention of the darts on the sheet by the hooking action.
    Type: Grant
    Filed: July 6, 1972
    Date of Patent: September 14, 1976
    Assignee: Cadaco, Inc.
    Inventor: Douglas R. Bolton
  • Patent number: 3976740
    Abstract: A method of forming a thermometer structure, such as a low cost clinical thermometer, wherein the thermometer enclosure structure is formed of plastic as by molding. The capillary element of the thermometer is molded about a taut wire and is removed from the molding cavity by being urged along the wire to an exterior position. The thusly removed element is utilized as a pressure-applying means on the wire to hold the wire taught for subsequent molding of a subsequent element in the mold cavity. The subsequent element is then utilized to remove the previous element from the end of the wire and replace it as the means for holding the wire taut for molding a second subsequent element about the wire. A scale is located on the capillary element by accurately determining the top of the liquid column at a preselected temperature and coordinating the placement of the scale on the element relative to said determined level.
    Type: Grant
    Filed: April 3, 1972
    Date of Patent: August 24, 1976
    Assignee: Thermex, Inc.
    Inventor: Josef F. Klingler
  • Patent number: 3974919
    Abstract: An unloading apparatus for a briquette press, or the like, including a horizontally movable carriage with a plurality of vacuum cups on one end thereof for seizing articles from the press. The carriage is provided with rollers that roll on stationary frame tracks to permit reciprocation of the carriage with cranks being provided between the rollers and the carriage frame so that the carriage may be lifted and lowered at the article seizing station. A drive system is provided that reciprocates the unloading carriage by chains and sprockets, and through the provision of cams for operating the cranks, the entire carriage is pivoted downwardly or upwardly while maintaining it horizontal during article seizing. A control is provided having both automatic and manual modes effecting the proper interlocking between operation of the unloading apparatus and the associated press.
    Type: Grant
    Filed: October 5, 1970
    Date of Patent: August 17, 1976
    Assignee: Wehr Corporation
    Inventors: Janis A. Bokalders, Rade Jurich
  • Patent number: 3964114
    Abstract: A high capacity molding apparatus operable without substantial pause for molding a series of articles such as food material patties having a movable mold, a continuously operable drive for moving the mold between a position in which a mold opening is in communication with a material supply means and a discharge position and return, a pressure device for forcing material from the supply at the filling position at the mold opening, a continuously movable drive operable through successive pressure cycles for operating the pressure device in which the mold moving structure is operated out of time phase with the pressure operating structure for initiating the mold movement prior to the completion of a corresponding pressure cycle. The disclosure also includes an improved removal device for removing the shaped articles from the mold openings. The disclosure also includes an improved filling arrangement for filling the mold opening from the supply of moldable material.
    Type: Grant
    Filed: July 5, 1973
    Date of Patent: June 22, 1976
    Assignee: Hollymatic Corporation
    Inventor: James A. Holly
  • Patent number: 3958798
    Abstract: An improved deleaver for a continuous business forms assembly for separating the stationery plies and interleaved carbon plies from each other. The invention features a unique carbon turning bar assembly whereby the same is permanently affixed to the machine and yet may be moved between operative and inoperative positions, the latter being used when continuous business forms assemblies not having interleaved carbon are being processed. Also featured is a door in the wall of the first chute which may be selectively opened or closed. When extremely large forms are being processed such that they cannot rest generally parallel to the bottom of the first chute, the door may be opened to allow efficient processing.
    Type: Grant
    Filed: December 20, 1973
    Date of Patent: May 25, 1976
    Assignee: Uarco Incorporated
    Inventors: Kenneth W. Bower, Burl R. Jones, Sr.
  • Patent number: 3953908
    Abstract: A headlamp wiper assembly, for spraying and wiping headlamps including one or more wiper arms and blades fixed to pivot about a common axis with the wiper blade consisting of a backing strip having key slots therein and an open aperture at one end, along with a multifarious wiping element having a plurality of T-shaped projections for fitting in the key slots in the backing strip and a projection at the end thereof for buttoning the backing strip to the wiping element upon stretching the wiping element. The wiping element is provided with a plurality of angularly related wiper facets for engaging with and cleaning the headlamp. The assembly is provided with a drive shaft interconnected to oscillate the wiper arm and blade through a bracket assembly, the end portion of the drive shaft being provided with a nozzle means having one or more openings and oscillates with the wiper arms and blades and sprays the headlamps adjacent the wiping element as they oscillate.
    Type: Grant
    Filed: April 26, 1973
    Date of Patent: May 4, 1976
    Assignee: The Anderson Company
    Inventor: Lawrence R. Loskill
  • Patent number: 3948287
    Abstract: Accumulator consisting of a container body and a lid body. In assembling, first the open portion of the bladder is attached to the open portion of the lid. Thereafter, the joint portions of the lid body and container body are welded. A guide ring connected to a bladder holding ring is placed at the inner face of the joint portion of the lid body and container main body, said guide ring is then bonded to the lid body and the bladder holding ring is applied to the bladder. With the bladder holding ring and container main body, the flange portion of the bladder is pressed against the inner wall of the container.
    Type: Grant
    Filed: April 12, 1974
    Date of Patent: April 6, 1976
    Inventors: Nobuyuki Sugimura, Kazuo Sugimura
  • Patent number: 3947036
    Abstract: An apparatus for playing word games wherein a group of carriers are movably mounted on a base for selectively exposing different letters through a row of spaced openings defined by the base. The exposed letters are disposed in side-by-side relationship to comprise words. Each carrier is provided with indicia at the mid-portion of the set of letters thereof for indicating that the carrier is in an original non-manipulated position.
    Type: Grant
    Filed: June 28, 1973
    Date of Patent: March 30, 1976
    Inventor: Emil J. Kupec
  • Patent number: 3940879
    Abstract: A walking mechanism for a toy having two legs. Each leg is provided with a vertically elongated slot intermediate its ends which receives a pin connected to a frame mounting a drive motor. The drive motor operates a shaft bearing two eccentrics with the eccentrics being located 180.degree. apart about the shaft and each eccentric is drivingly connected to one end of a respective leg. As a result, each leg is driven through a generally elliptical path with the movement of each being 180.degree. out of phase with the movement of the other.
    Type: Grant
    Filed: December 14, 1970
    Date of Patent: March 2, 1976
    Inventors: Marvin I. Glass, Allison Katzman, Peter Aleksa
  • Patent number: 3939531
    Abstract: Apparatus for molding articles such as patties from plastic food material that tends to shrink during processing cooking and the like, for example ground beef, in which the material is forced under pressure in a stream from a supply into a mold cavity through a passage having opposite side walls at a specific relationship to the stream and to each other and a specific width at the cavity so as to cause mixing, tumbling and kneading of the material in its flow through the passage with the result that the shaped portion when cooked or similarly processed essentially maintains its shape. Thus, if the shaped portion is, for example, a circular patty such as a hamburger patty it substantially maintains its circular shape throughout the processing.
    Type: Grant
    Filed: May 9, 1973
    Date of Patent: February 24, 1976
    Assignee: Hollymatic Corporation
    Inventor: James A. Holly
  • Patent number: 3938388
    Abstract: A thermometer adapted to be subjected to temperatures above the normal reading temperature range thereof without adversely affecting the accuracy of the thermometer in subsequent use thereof at the reading temperatures. The thermometer is adapted for use as a clinical thermometer having a normal reading temperature range of below 100.degree.F. and is constructed to provided such maintained accuracy notwithstanding subjection of the thermometer to elevated temperatures such as 140.degree.F. or more.
    Type: Grant
    Filed: April 6, 1973
    Date of Patent: February 17, 1976
    Assignee: Thermex, Inc.
    Inventor: Josef F. Klingler
  • Patent number: 3937264
    Abstract: Tire bead seating and inflating apparatus of the type employing an arcuate tube having its interior connected to a source of air and including inwardly directed nozzles for directing a high volume of air under pressure toward the interface between a tire rim and a tire sidewall while air is simultaneously being applied to the interior of the tire through a conventional valve stem. The invention specifically contemplates a kit whereby such an apparatus, along with desired peripheral equipment, may be easily affixed to existing tire changing stands.
    Type: Grant
    Filed: March 3, 1972
    Date of Patent: February 10, 1976
    Assignee: The Coats Company, Inc.
    Inventors: John L. Mikovits, Elmer J. Strang, Ray A. Scott, Billy L. Sorenson