Patents by Inventor Steven G. Parmelee

Steven G. Parmelee 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: 5201067
    Abstract: A personal communications device (100) includes a wireless transceiver (206, 207, 208) to allow a two-way exchange of user information, and to allow down loading of remote control signalling information. The latter can be transmitted via an appropriate transmitter (210 or 211) to facilitate remote control of a remote controlled device.
    Type: Grant
    Filed: April 30, 1991
    Date of Patent: April 6, 1993
    Assignee: Motorola, Inc.
    Inventors: Gary W. Grube, Steven G. Parmelee
  • Patent number: 4764840
    Abstract: An improved dual limit solenoid driver control circuit is disclosed in which solenoid current is sensed and provided as an input to two separate comparators (24, 25). Each comparator receives, during a solenoid pull-in (initial) period (T.sub.1), fixed maximum and minimum reference threshold levels which determine the maximum and minimum current limits (I.sub.max, I.sub.min) for solenoid current during initial pull-in excitation. Subsequently during a hold period T.sub.2 following the pull-in period, each of the comparators receives different maximum and minimum thresholds so as to establish holding solenoid current limits (H.sub.max, H.sub.min). The outputs of the compartors are connected as inputs to a set/reset flip flop (32) whose output controls the operation of a solenoid driver circuit (15). A monostable multivibrator (33) reacts to an initial control pulse (41) to produce a predetermined pull-in time pulse (43) that results in the maximum and minimum pull-in solenoid current limits.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: August 16, 1988
    Assignee: Motorola, Inc.
    Inventors: Adelore F. Petrie, Thomas F. Karlmann, Steven G. Parmelee, Arthur J. Edwards