Patents by Inventor Mark E. Hempel

Mark E. Hempel 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).

  • Static discharge wristband having substantially universal dual snap connector
    Patent number: 5677822
    Abstract: A dual conductor wristband utilizing a two-wire tether having a greatly modified single snap design. The wristband includes a strap (band) and a connector case, the case having a male snap for receiving a dual connector female socket. The male snap incorporates a plunger and a conductive rubber washer that activates the plunger so there is always electrical contact in both electrical circuits. The invention may be used with dual line constant resistance, capacitance, impedance, and non-monitored systems.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: October 14, 1997
    Assignee: Desco Industries, Inc.
    Inventors: Lenard Cohen, Robert W. Weir, Robert J. West, Mark E. Hempel
  • Adjustable antistatic bracelet with snap-assembled permanent cap
    Patent number: 5568351
    Abstract: An antistatic metal-link bracelet in which the connector portion has no moving parts. An insulating cap snap-connects permanently to a metal channel. The snap connection is such as to facilitate manufacture at low cost, and to make a permanent low-resistance electrical connection through which static electricity may drain to a grounding cord.
    Type: Grant
    Filed: June 8, 1995
    Date of Patent: October 22, 1996
    Assignee: Desco Industries, Inc.
    Inventors: Robert J. West, Mark E. Hempel