Patents Represented by Attorney Ralph Hammar
  • Patent number: 4927712
    Abstract: Tin-based alloys filled with steel shots or/and reinforced with short tin-coated steel fibers were prepared by melting the alloy phase and by mixing filler shots/fibers with the molten alloy in an air atmosphere with the addition of ammonium chloride. The content of steel shots ranges up to about 40 weight % and the fraction of tin-coated steel fibers ranges up to about 30 weight %. New reinforced composite alloys have a higher strength than unreinforced conventional alloys while keeping the melting temperature of new composites in the same range of unreinforced alloys.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: May 22, 1990
    Assignee: Yoon Technology
    Inventors: Yoon O. Lhymn, Chang Lhymn
  • Patent number: 4918755
    Abstract: A glove made of a sheet of foamed plastic bubbles of random sizes filled with air with the largest bubbles being of diameter much less than finger width which provides a cushioned gripping and thermal insulation useful im pumping self-service gasoline and handling frozen foods.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: April 24, 1990
    Inventor: Duane W. Kinnear
  • Patent number: 4902153
    Abstract: A brush holder for unattended car wash bays which releases the brush for the period paid for by coin deposits and locks the brush upon termination of that period.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: February 20, 1990
    Inventor: Milton Luke
  • Patent number: 4876526
    Abstract: An op-amp flasher for trucks, busses, ambulances and other equipment requiring flashing high power light sources. The flashing is made more noticeable and lamp life increased by increasing the spacing between the flashes so that the flashes are on less than half of the time. In a preferred form, the flashes are on a third of the time and intervals between flashes are two-thirds of the time.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: October 24, 1989
    Inventor: Joseph Spiteri
  • Patent number: 4831949
    Abstract: A spinnaker sail is furled by bunching the edges of the sail together edgewise and holding the edges in a compact bunch by a furling line. The spinnaker is unfurled by hoisting the spinnaker to the top of the mast, releasing the furling line, and pulling the lower corners of the spinnaker downward. The furling line extends through circumferentially spaced guides extending around the periphery of the sail. In a preferred form, one end of the furling line is fastened to a first guide at the bottom of the sail and extends from the first guide sequentially through the other guides spaced around the periphery of the sail and back through said first guide to receive a tension force areally compressing the sail edgewise into a compact bunch which is held in place by the furling line.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: May 23, 1989
    Inventor: Dimitri Valiant
  • Patent number: 4826134
    Abstract: A valve having a valve member of diameter less than the bore of an air compressor inlet which closes against a seal of flexible material such as TFE projecting into the bore of the inlet.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: May 2, 1989
    Inventor: Walter R. Chapman
  • Patent number: 4815900
    Abstract: A method of use of a rotary tool for forming the skin receiving groove at the lip line of an animal head form. The tool produces a narrow slot at the junction line of the upper and lower lips with an enlargement below the slot and with round holes at the rear corners or junctions between the upper and lower lips.
    Type: Grant
    Filed: October 22, 1987
    Date of Patent: March 28, 1989
    Inventor: Donald J. Brickner
  • Patent number: 4794665
    Abstract: A rotary cutter having serrated cutting edges formed by the intersection with a cutting face of serrations angularly inclined to the cutting face to provide side clearance for the trailing sides of the serrations.
    Type: Grant
    Filed: July 9, 1982
    Date of Patent: January 3, 1989
    Assignee: Greenleaf Corporation
    Inventor: Robert W. Peters
  • Patent number: 4778454
    Abstract: A fixture for loading a syringe from a vial of liquid which is of particular value to those with poor (or no) vision, the fixture being characterized by a gauge for measuring the quantity of air to be injected into the vial prior to loading and the quantity of liquid to be loaded into the syringe.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: October 18, 1988
    Inventor: Charles R. LaDow
  • Patent number: 4745635
    Abstract: A glove made of blister pack material to be worn for self-service gasoline.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: May 24, 1988
    Inventor: Duane W. Kinnear
  • Patent number: 4704852
    Abstract: A rake for softball and baseball infields and baselines which smooths the surface after each game without leaving any tracks. The rake may be pulled by hand or by a lightweight tractor.
    Type: Grant
    Filed: October 22, 1985
    Date of Patent: November 10, 1987
    Inventor: Richard W. Knapp
  • Patent number: 4649730
    Abstract: A tool for exerting tension through the automobile bumper shock absorber to pull frames and bodies into design position after a crash.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: March 17, 1987
    Inventor: David Butler
  • Patent number: 4604906
    Abstract: A strain gage flowmeter in which the sensing element is an airfoil aligned with the flow of the fluid to be measured and the flow responsive thrust on the element is transverse to the flow. This type of flowmeter can measure accurately flow in which the ratio of maximum flow to minimum flow is 100 to 1. It also reduces wear from abrasive liquids or slurries.
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: August 12, 1986
    Inventor: Thomas J. Scarpa
  • Patent number: 4588186
    Abstract: A self-contained stretching apparatus with two ropes extending from a shoulder harness fitting over the mid-chest region to a foot receiving stirrup. Each rope has a separate handgrip. By putting one foot in the stirrup and pulling the handgrips, various muscles and tendons may be stretched as part of a warming up exercise.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: May 13, 1986
    Inventor: John Calabrese
  • Patent number: 4584043
    Abstract: An insulated concrete block assembly which can be laid dry or with mortar joints. The assembly has a pair of standard concrete blocks adhesively bonded to opposite sides of a panel of insulating material and a flat sheet metal tie bridging the panel and having opposite ends adhesively bonded to load carrying surfaces of the blocks. The adhesive bond is stronger than the concrete, so that once made up, the assembly cannot be taken apart without breaking the concrete.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: April 22, 1986
    Inventor: Monte Riefler
  • Patent number: 4582497
    Abstract: A decorative spinner in which a hub and wind actuated blades are molded in one piece of plastic. The blades are connected to the hub by triangular spokes substantially in planes including the axis of the hub. Each spoke connects the leading and trailing edges of adjacent blades.
    Type: Grant
    Filed: July 12, 1984
    Date of Patent: April 15, 1986
    Inventor: William J. Lyons
  • Patent number: 4579717
    Abstract: A room air freshener in the form of a porous ceramic ring sized to rest on the upper end of a conventional electric lamp bulb. The ring has a cavity in its top surface of volume less than the combined volume of the pores of the ceramic so that a fragrant oil filling the cavity will be completely absorbed by the ceramic leaving a dry outer surface which does not collect dust. When the lamp bulb is turned on, the ring is heated to vaporize the oil and release the fragrance which permeates the room.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: April 1, 1986
    Inventor: Joseph Gyulay
  • Patent number: 4554739
    Abstract: A measuring stick or rule which quickly provides a line along which a pant leg is to be cut and a line along which said pant leg is to be folded in order to provide the desired length.
    Type: Grant
    Filed: March 6, 1984
    Date of Patent: November 26, 1985
    Inventor: Albert J. Kirsch
  • Patent number: 4541629
    Abstract: An injection molded baseball bat with a core of thermoplastic plus a blowing agent and a solid skin of thermoplastic per se injected into the mold at one and the same time. The skin and core may be of the same or of different thermoplastic. The baseball bat is a unitary structure of superior strength and finish with the foamed core and solid skin fused together.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: September 17, 1985
    Inventor: William Witkowski
  • Patent number: 4525872
    Abstract: An accessory for mounting on the receiver of a personal paging system. The receiver is normally worn below ear level and the accessory increases the sound of the paging signals reaching ear level.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: June 25, 1985
    Inventor: John S. Zochowski