Pneumatic Patents (Class 116/58R)
Parking brake actuated (Class 116/58A)
  • Aerial toy
    Patent number: 4624648
    Abstract: A rotary aerial toy comprising a tubular sleeve of flexible material and of circular cross section. In one form of the invention the tubular sleeve tapers from one end toward the other with air entering the larger head end and moving toward the tail end. The head end is adapted for a bridle connection for supporting the sleeve for wind passage therethrough. The sleeve comprises plural strips extending at least generally longitudinally of the sleeve with each strip being of substantially right triangular form, at least at the head end portion thereof. The strips are connected to one another with the hypotenuse leg of one strip being connected to the altitude leg of an adjacent strip and with the base leg being transverse. The strips are arranged at assembly with a step between the head ends of adjacent strips and the seams connecting any selected pair of strips stop short of the head end of the altitude leg of the strip.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: November 25, 1986
    Assignee: Catch the Wind Kite Shops, Inc.
    Inventor: John R. Waters
  • Automobile brake pedal control
    Patent number: 4454497
    Abstract: A counterbalancing mechanism for applying an upward force to the brake pedal (37) operable by the left foot of the driver of an automobile, comprising an actuator rod (66) transmitting force from a pressure-actuated diaphragm (74) to said pedal (37) to counterbalance the effective weight of the driver's left foot and leg when resting on said pedal (37), the pressure applied to said diaphragm (74) being adjustable by a pressure regulator (83) in the supply line (80, 89, 90) directing pressure against said diaphragm (74).
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: June 12, 1984
    Inventor: John F. Morse
  • Low pressure differential detecting whistle
    Patent number: 4215646
    Abstract: A whistle audibly responsive to extremely small pressure differentials is described. The whistle has a cylindrical inlet portion, a cylindrical outlet portion and a cylindrical constriction that form a passageway between said inlet and outlet portions. The whistle produces audible sound having an intensity of about 80 DB in response to a pressure differential, across the inlet and outlet portions, that is in the range of about 0.005 to 0.02 psi.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: August 5, 1980
    Inventor: Douglas J. Williams
  • Ultrasonic device for scaring animals from a moving vehicle
    Patent number: 4150637
    Abstract: An air scoop is positioned to receive and compress air in response to movement of a vehicle or its radiator-cooling fan. The compressed air is conducted to a whistle for producing sound at a frequency somewhat above human hearing range. The whistle is preferably provided with a dished reflector for forwardly beaming the sound. The reflector can optionally also be the air scoop.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: April 24, 1979
    Inventor: Monroe Penick