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Patent No. 5277148

Wearable Pet Enclosure

An enclosure for small animals which is wearable on the front or back of an animate being.

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Class 200/50.38 - Grounding transformer switch


Subclass of Class 200 - Electricity: circuit makers and breakers
Definition: Subject matter including a transformer switch intended primarily
No. of patents: 9
Last issue date: 10/03/2000


NumberTitleIssue Date
6127637Disconnect feature for interrupter
A disconnect feature is provided for a circuit interrupter that is conveniently incorporated with the circuit interrupter. The disconnect feature is operable between closed and open positions, providing a visible open gap in the open position. The disconn...
10/03/2000
5349144Transformer connector
A connector for installation between utility transformer secondary leads and service leads. The connector is for location below a pole-mounted transformer and may be opened or closed from the ground with the use of a tool such as a hot stick. The connecto...
09/20/1994
5216398Mutual locking device for electromagnetic contactors
A pair of closed contacts having moving contacts (27A), (27B) and fixed contacts (25A), (26A), (25B), (26B) are provided in a mutual locking device (3) and excitation circuits of two electromagnetic contactors which are inversely connected to respective c...
06/01/1993
5206617Auxiliary switch for an electromagnetic switching device
An auxiliary switch for an electromagnetic switching device with two pressure springs (2, 3) arranged outside of the axis of movement (1) of the contact bridge support (10), these pressure springs being supported in the manner of a two-armed toggle joint ...
04/27/1993
4766270Limited force interlock mechanism
The invention provides an interlock mechanism between an electromagnetic contactor and a hand operated isolation switch which both prevents operation of the isolation switch when the contactor is in the contact closed position, and also limits the force w...
08/23/1988
4644113Electric safety device
An electric safety device for controlling a power switch 8 and a grounding switch 9 of a high voltage electric device includes a motor 10, a threaded shaft 4 driven by the motor, a movable sleeve 5 on the threaded shaft for being driven by the motor to an...
02/17/1987
4486634Ground test switch for gas insulated switchgear
A ground test switch comprises a terminal plate electrically connected to a movable contact member but electrically insulated from a closed vessel enclosing a high-voltage conductor, a grounding conductor disconnectably electrically connecting the termina...
12/04/1984
4204142Hoist motor control system
An improved hoist control system wherein a D.C. motor is employed to drive the hoist, and a remote hand-held control is utilized to vary the motor speed and direction of rotation. The hand control comprises an A.C. to D.C. variable transformer which is co...
05/20/1980
4115677Induction heating apparatus
An induction heating apparatus includes an inverter circuit, a plurality of output coils for induction heating, a coil selection circuit for selectively connecting the output coils to the output terminal of the inverter circuit, and a control circuit for ...
09/19/1978
 
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