Patents by Inventor Jan W. Rabek

Jan W. Rabek has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5343974
    Abstract: A motor vehicle including modular units for operating two rear wheels of the vehicle the motive unit includes a rigid link which is pivotally connected between the rear wheel and the motive unit, and the motive unit is operable by a motor. A rigid link is pivotally connected, and the rear wheels are spring suspended mounted relative to the frame of the vehicle. In an electrical vehicle form, there is a slidable movable battery pack located in a rear compartment of the vehicle for easy installation and removal from the vehicle. Different traction characteristics can be provided to the motive unit including an integrated motor, integrated gear box, and power input-output shaft accessible to secondary power or an energy recycler unit. Steering is effected by a controller which operates the speed of the driven wheels.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: September 6, 1994
    Inventor: Jan W. Rabek
  • Patent number: 4180240
    Abstract: A low noise level valve for controlling high pressure fluid flow between an inlet and an outlet. The valve comprises a poppet movable along a given line with respect to a complementarily formed valve seat. The area between the poppet and valve seat comprises a series of spaced undulations which extend along a continuous curve of approximately 90.degree.. The undulations are disposed substantially parallel to the direction of poppet movement adjacent to the inlet and are substantially transverse adjacent to the outlet. The undulations define a plurality of orifices which are opened progressively from the outlet toward the inlet. The orifices act as pressure drops and also cause turbulence as fluid flows around the undulations, thereby holding the fluid flow below undesirable speed and noise levels. A balancing chamber may be provided to counter-balance the poppet movement. Sealing means may be provided by an undercut lip formed on a sealing member adjacent to the inlet.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: December 25, 1979
    Assignee: Air-Dry Corporation of America
    Inventors: Robert S. Sheldon, Jan W. Rabek
  • Patent number: 4179917
    Abstract: A low pressure dew and frost point indicator of the type having a vortex tube which directs a cold air stream against the back of a viewing mirror for observation of the initial formation of frost. The mirror has means for simple and automatic centering with respect to the cold air stream of the vortex tube for maximum temperature transfer. The mirror engages no heat conducting elements and has means for improved cold temperature transfer. A venturi nozzle passes the warm air output of the vortex tube around the cold air output for adjustment to provide optimum cold air generation by reduction of the vortex tube outlet pressure. A temperature control valve controls the temperature in the sample chamber by mixing the warm and cold air outputs of the vortex tube.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: December 25, 1979
    Assignee: Air-Dry Corporation of America
    Inventors: Robert S. Sheldon, Jan W. Rabek
  • Patent number: 3965746
    Abstract: A high precision pressure transducer utilizing a fluid-tight evacuated pressure capsule having a diaphragm forming the wall portion of the pressure capsule. Deflection of the diaphragm controls variations in an extremely small gap spacing between two associated pairs of capacitor plates positioned within the evacuated capsule. The variations in capacity of the two variable capacitors is used to electrically vary the frequency of an associated electrical oscillator. The sensitivity to deflections is very high, permitting relatively thick, very low deflection, very low stress diaphragms to be utilized, which in the substantially completely symmetrical mechanical and electrical arrangement of the pressure capsule produces extremely high stability and accuracy of operation.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: June 29, 1976
    Assignee: Teledyne Industries, Inc.
    Inventor: Jan W. Rabek