Patents Assigned to Detroit Coil Company
  • Solenoid energization indicator with hold-down member for receiving bobbin assembly to rotatably adjusting the lamp position
    Patent number: 5764152
    Abstract: An energization indicator for a solenoid includes an electrically operable signaler (70) having a coil (72) for energizing the signaler (70) when a magnetic flux field sweeps such coil, with the coil (72) being mounted in the magnetic flux path of the solenoid coil. The indicator includes the hold-down member (116) for rotatable positioning of the bobbin assembly on the hold-down member independently of the rotated position of the hold-down member to locate the lamp as desired on the solenoid.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: June 9, 1998
    Assignee: Detroit Coil Company
    Inventor: Albert L. Kozleski
  • Solenoid energization indicator
    Patent number: 5287087
    Abstract: An energization indicator for a solenoid includes an electrically operable signaler (70) having a coil (72) for energizing the signaler (70) when a magnetic flux field sweeps such coil, with the coil (72) being mounted in the magnetic flux path of the solenoid coil (53).
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: February 15, 1994
    Assignee: Detroit Coil Company
    Inventors: David C. Jencks, Larry A. Williamson
  • Solenoid
    Patent number: 4166262
    Abstract: An alternating current solenoid having a quadrilateral frame and coil wound plastic bobbin disposed therein is encapsulated in a resin block with a pole piece extending into the block and through the frame at one end, and a plunger in a guideway formed by the barrel of the bobbin reciprocates through the other end of the frame and within the guideway.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: August 28, 1979
    Assignee: Detroit Coil Company
    Inventors: Hollis W. Jencks, David C. Jencks
  • Solenoid operated pilot valve
    Patent number: 4159026
    Abstract: In a Solenoid Operated Pilot Valve, the solenoid plunger serves as a valving element blocking the flow of pilot fluid through orifices disposed at opposite ends of the plunger movement with the plunger being shifted in one direction under the influence of the solenoid coil to block the pilot fluid flow through one orifice and upon de-energization of the solenoid coil the plunger is shifted in the opposite direction by a permanent magnet to block the fluid flow through the orifice at the other end of plunger movement.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: June 26, 1979
    Assignee: Detroit Coil Company
    Inventor: Larry A. Williamson
  • Encapsulated solenoid
    Patent number: 4087773
    Abstract: An alternating current solenoid having a quadriateral frame and a coil-wound plastic bobbin disposed therein is encapsulated in a resin block opening outwardly at one end with a pole piece extending into the block through such end and through the frame and into a plunger guideway formed by the barrel of the bobbin, the opposite end of the block interiorally defining an extension of the guideway and closing the end thereof remote from the pole piece.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: May 2, 1978
    Assignee: Detroit Coil Company
    Inventors: Hollis W. Jencks, David C. Jencks, Ralph M. Burton