Patents by Inventor John Hornyack

John Hornyack 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).

  • Smart accumulator to attenuate pulses in a hydraulic elevator
    Patent number: 5732740
    Abstract: A body of electrorheological ("Smart") fluid is disposed between hydraulic fluid within a hydraulic elevator system, and a chamber filled with pressure absorbing fluid. By introducing a field within the Smart fluid to maintain the Smart fluid in a given phase, the Smart fluid transmits the pulsations from the hydraulic fluid to the pressure absorbing fluid as a function of the pulsations.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: March 31, 1998
    Assignee: Otis Elevator Company
    Inventors: John Hornyack, William A. Wurts
  • Hydraulic cushionride elevator
    Patent number: 5195614
    Abstract: A mechanism is placed between a plunger and an elevator car to damp the effects of stick-slip encountered during elevator start-up and to minimize the probability of damage to a plunger/cylinder assembly if the elevator car is stopped in an emergency. The mechanism comprises a self-leveling hydraulic shock absorber that operates independently of any stick-slip between the plunger and cylinder.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: March 23, 1993
    Assignee: Otis Elevator Company
    Inventors: John Hornyack, Louis Bialy, Rajendra V. Mistry