Patents Assigned to Electro Switch Corp.
  • Patent number: 5321376
    Abstract: A tagging relay is designed to provide for remote, central control of electrical distribution lines and their respective breaker coils, such control formerly being manually effected only. The relay has a switch shaft construction rotatable from a first, "closed" position to a second, "open" position, from the second position to a third, "tagged" position, from the third to the second position, or from the second to the first position. The rotation can be effected manually via a handle, or remotely via electrical input to one or more solenoids. The relay is designed and constructed such that actuation of any one solenoid may effect rotation of the switch shaft construction to one of the three positions, exclusively. The switch shaft construction is operably linked to a contact-carrying rotary switch shaft provided within a conventional, stationary contact-carrying switch body.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: June 14, 1994
    Assignee: Electro Switch Corp.
    Inventor: Alexander MacLean
  • Patent number: 4399421
    Abstract: A tripping solenoid is used in connection with a lockout relay and has an adjusting means for positioning a plunger end with respect to a coil of the solenoid to predetermine threshold voltage, reluctance, and response time to activation of the plunger by a magnetic field of the coil. A spring opposes movement of the plunger in a first direction toward a push rod which is separated from the plunger and mounted coaxially therewith.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: August 16, 1983
    Assignee: Electro Switch Corp.
    Inventor: Alexander MacLean
  • Patent number: 4255733
    Abstract: A latching switch relay has a selector hub which moves a contact carrying rotary switch shaft along with its contacts from a first to a second position. The selector hub moves to a corresponding first and second position to cause movement of the shaft by remote actuation of a rotary solenoid or by manual operation of a handle linked to the selector hub. A spring is engaged with the selector hub to resiliently urge the switch shaft into its first and second positions.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: March 10, 1981
    Assignee: Electro Switch Corp.
    Inventor: Alexander MacLean
  • Patent number: 4137439
    Abstract: A rotary device acts as a switch and relay for manual or remote operation with the use of a rotary solenoid and a unique ratchet and automatic electrical contact opening and closing mechanism. The ratchet coacts with a spring loaded drive bar mounted perpendicular to a central axis of a rotary switch shaft. The drive bar is biased toward a ratchet face which carries a plurality of angularly arranged inclined surfaces. A detent wheel is fixed to the shaft with a pair of springs maintaining the detent wheel in a first position. A rotary solenoid is attached to the ratchet wheel and acts to drive the ratchet wheel to in turn cause rotation of the detent wheel and changing of switch positions.An automatic electrical contact opening and closing mechanism used with the rotary selector switch relay device has a first spring urging a contact arm and contact into a first position with the contact in electrical engagement with a fixed contact.
    Type: Grant
    Filed: June 24, 1977
    Date of Patent: January 30, 1979
    Assignee: Electro Switch Corp.
    Inventor: Alexander MacLean
  • Patent number: 4133020
    Abstract: A control switch has a switch shaft carrying radially positioned contacts and mounted for reciprocal rotational movement about its axis. A cam profile is fixed to the shaft and has first and second opposed cam surfaces. A driver is mounted to selectively engage the first or second cam surface to drive the switch shaft into a first clockwise position or a second counterclockwise position by remote actuation. The driver is connected to a rotary solenoid and a linear solenoid which allow uni-directional drive translated into two directional drive by the driver.One form of control circuit operates a rotary solenoid and a linear solenoid through a trip and close switch. A first relay is responsive to actuation of the trip switch means or close switch means to energize the rotary solenoid and index the switch shaft to a preselected position holding that position for a preselected time after which the shaft returns to its original position regardless of whether or not the trip switch or close switch are deactuated.
    Type: Grant
    Filed: June 29, 1977
    Date of Patent: January 2, 1979
    Assignee: Electro Switch Corp.
    Inventor: Alexander MacLean
  • Patent number: 4106072
    Abstract: A control switch has a switch shaft mounted for reciprocal rotational movement about its axis. A cam profile is fixed to the shaft and has first and second opposed cam surfaces. A driver is mounted to selectively engage the first or second cam surface to drive the switch shaft into a first clockwise position or a second counterclockwise position by remote actuation. The driver is connected to a rotary solenoid which allows uni-directional drive translated into two directional drive by the driver.A control circuit provides rapid actuation and slow release of the rotary solenoid along with operation of a linear solenoid when desired to select between first and second directional movement of the cam profile. The control circuit permits charging a capacitor while rapidly actuating a relay to actuate the rotary solenoid. A resistor provides for slow discharge of the capacitor to maintain the relay actuated over a slow release period after disruption of the charging circuit.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: August 8, 1978
    Assignee: Electro Switch Corp.
    Inventor: Alexander MacLean