Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1993-12-16
1997-01-07
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
250551, 307125, 315159, G02B 2700, H01H 3500
Patent
active
055920330
ABSTRACT:
The present invention generally relates to a cost-effective photocell switching circuit which can be manufactured as a single, factory sealed unit suitable for use in Class I, Division 2 environments. In accordance with the present invention, the switching circuit can be wholly formed with electrical components (i.e., without movable parts such as electro-mechanical relays). Further, features of switching circuits designed in accordance with the present invention render the electrical components immune to noise such that the components can be combined in a single unit, explosion-proof housing, thus reducing overall switching circuit complexity and production costs.
REFERENCES:
patent: 3932770 (1976-01-01), Fantozzi
patent: 4091276 (1978-05-01), Lebovici
patent: 4481423 (1984-11-01), Conway
patent: 4651023 (1987-03-01), Parsonage
patent: 4658129 (1987-04-01), Fan
patent: 4709154 (1987-11-01), Rademaker et al.
patent: 4745311 (1988-05-01), Iwasaki
patent: 4758767 (1988-07-01), Blake
patent: 4800293 (1989-01-01), Miller
patent: 4864126 (1989-09-01), Walters et al.
patent: 5057700 (1991-10-01), Choi
patent: 5087808 (1992-02-01), Reed
patent: 5105090 (1992-04-01), Miyajima et al.
patent: 5170059 (1992-12-01), Palaniappan
patent: 5257639 (1993-11-01), Prescott et al.
Crouse-Hinds Code Digest 1993, Cooper Industries, 1993.
DMV Champ Series Lighting Fixtures, Cooper Industries, 1992, 6 pages.
VMW Champ Series Lighting Fixtures, Cooper Industries, 1992, 6 pages.
Combating Corrosion--How To Select The Most Resistant Materials And Finishes For Use In Corrosive Atmospheres And Environments, Cooper Industries, 1987, 7 pages.
Champ, H.I.D. Lighting Fixtures Application Guide, Cooper Industries, 1991.
Cooper Industries Inc.
Kaplan Jonathan S.
Shoop Jr. William M.
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