American On-premise Advertising Company

Consolidated Electronics Inc.

William J Seaton

Greg A Lloyd

Duane B Kutsch

Donald R Skinfill

Terrence D Huber

David A Gwynne

Anders M Stendin

A high voltage switching apparatus 10 is described containing an arc-quenching gas containing sulphurhexafluoride in a vessel 12 that is monitored by a gas monitoring device 20. A temperature transducer 34 is attached to the exterior of the vessel 12 to sense the temperature of the gas. A gas line 24 leads from a control panel 18 to an enclosure 22 of the device 20. The device 20 has a front display panel with a digital communication terminal 42 for connecting to a computer to load and download data to and from the device 20 relating to the density of the gas within the vessel 12. The device 20 includes a data input module 44, a control module 46, a relay module 48, a display module 50 and a DC power supply module 52 mounted in an enclosure 22. The enclosure 22 has an internal heater 56 for maintaining the temperature within the enclosure above 20.degree. C. The control module 46 has a microprocessor 70 that is program controlled to poll the transducers and calculate the present density of the gas and determine if the density has sufficient deviation to warrant the activation of a series of relays. Additionally, the microprocessor 70 is programmed to record the events that occur to the device as a historical record that may be later downloaded.

High voltage transmission switching apparatus with gas monitoring device

A display element designed to permit easy assembly of an electronic display device and which utilizes an electromagnet having an L-shaped pole piece and reverse windings. Specifically, the invention resides in a display element for use in an information display device having a plurality of holes provided therein for receiving a plurality of the display elements. The display element includes a translucent member adapted to abut against the back side of the display device and cover one of the holes therein; a mounting bracket adapted to abut against the front side of the panel and having a fastening means extending through the hole of the display panel and connecting to the translucent member for securing the translucent member and the bracket to the panel; a flap pivotably secured to the display panel about a pivot axis, one side of the flap having a non-reflective surface and the other side of the flap having a reflective surface, the flap being piovtal from a first position where the non-reflective surface faces outwardly towards a viewer to a second position, approximately 180.degree. from the first position, where the reflective surface faces outwardly towards a viewer; a magnet disposed on the flap; an electromagnet secured to the back side of the display device and having a pole piece disposed axially therein and extending into the translucent member; and a source for supplying electric current to the electromagnet so as to alternatively energize the pole piece to be a south pole piece or a north pole piece wherein when the pole pieces are energized to be either a north pole piece or a south pole piece the flap is pivoted to the first position and when the pole pieces are energized to be the other of the north pole piece and the south pole piece the flap is pivoted to the second position.

Electronic display element for electronic display device

Growing community of inventors

Greenacres, WA, United States of America

William J Seaton