Patents by Inventor Samuel C. Wan

Samuel C. Wan 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: 5655625
    Abstract: A particular elevator (1-9) is commandeered to transfer an emergency cab F to (or near) a floor where an alarm has been sounded. The commandeered car is brought to the floor FF where the emergency cab is parked. The fire cab is exchanged for the normal cab C on the commandeered car, and is then carried to (or near) the alarm floor for responding to the alarm. Passengers in the normal cab may exit through landing doorways (23). Emergency personnel have access to the alarm area through emergency hoistway doors (27). A rack and pinion horizontal motive means for moving the cabs is illustrated (FIG. 12 ).
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: August 12, 1997
    Assignee: Otis Elevator Company
    Inventors: Frederick H. Barker, LucyMary Salmon, Paul Bennett, Anthony Cooney, Richard C. McCarthy, Joseph Bittar, Bruce A. Powell, Samuel C. Wan
  • Patent number: 5651426
    Abstract: Horizontally moveable elevator cabs A-E are transferrable between the car frames (72) of two elevators HI, LO in adjacent hoistways which extend between at least three levels (GND, MID, SKY) of a building, and between the car frames and landings L, R at said levels. The vertical movement of cars in the hoistways is synchronized, and transfer of elevator cabs between landings and car frames is simultaneous.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: July 29, 1997
    Assignee: Otis Elevator Company
    Inventors: Joseph Bittar, Anthony Cooney, Richard C. McCarthy, Frederick H. Barker, Bruce A. Powell, Samuel C. Wan, Paul Bennett, LucyMary Salmon
  • Patent number: 5601156
    Abstract: A socket plug assembly (44) on an elevator cab (10) may engage with complimentary socket plug assemblies (46) on either of two car frames (11, 13) when it is horizontally moved therebetween. A socket plug assembly (44a) on a horizontally moveable elevator cab may have a horizontal interface with a complimentary socket plug assembly (45b) mounted on an elevator car frame or landing, and one of them is moved vertically to cause engagement with the other. Socket plug assemblies (169) tethered to a cab (10) by means of an umbilical cord (168) is engageable with socket plug assemblies (170, 171) on booms (172, 173) on the elevator car frames (21, 22) or landings. An uninterruptible power supply (50) maintains power when the cab is unplugged; a transceiver (51) on the cab maintains communications with a transceiver (62) in the building when the cab is unplugged.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: February 11, 1997
    Assignee: Otis Elevator Company
    Inventors: Richard C. McCarthy, Joseph Bittar, Frederick H. Barker, Bruce A. Powell, Samuel C. Wan, Paul Bennett, Anthony Cooney, John K. Salmon, deceased