Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1996-05-22
1997-09-30
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
335205, 335207, 335280, 2003023, G08B 1308
Patent
active
056730217
ABSTRACT:
A magnetic switch assembly (10) for electrically coupling with an electrical circuit of an alarm system detecting relative movement between first and second adjacent members and for defeating attempted magnetic manipulation of the switch assembly (10) is disclosed. The switch assembly (10) includes a ball switch (20) for sensing the presence of an intruder's magnet (28) in the vicinity of the switch assembly (10) and for changing the state of the electrical circuit in response thereto. The switch assembly (10) also includes a reed switch (22) electrically coupled with the ball switch (20) for detecting relative movement between the first and second adjacent members and for changing the state of the electrical circuit in response thereto independently of the ball switch (20).
REFERENCES:
patent: 1051962 (1913-02-01), Lundquist
patent: 1192893 (1916-08-01), Harvey
patent: 1868923 (1932-07-01), Semon
patent: 3516036 (1970-06-01), Lea
patent: 3535664 (1970-10-01), Staar
patent: 3630168 (1971-12-01), Findlay
patent: 3650347 (1972-03-01), Campos
patent: 3763484 (1973-10-01), Byers
patent: 3774128 (1973-11-01), Orlando
patent: 3816680 (1974-06-01), Suzuki et al.
patent: 3842377 (1974-10-01), Barndt
patent: 3863182 (1975-01-01), Lapointe
patent: 4042796 (1977-08-01), Zink
patent: 4057773 (1977-11-01), Cohen
patent: 4062314 (1977-12-01), Allen et al.
patent: 4168410 (1979-09-01), Norris
patent: 4209777 (1980-06-01), Morrison
patent: 4275391 (1981-06-01), Okamura
patent: 4287512 (1981-09-01), Combs
patent: 4293860 (1981-10-01), Iwata
patent: 4326196 (1982-04-01), Plevy
patent: 4336518 (1982-06-01), Holce et al.
patent: 4450326 (1984-05-01), Ledger
patent: 4456897 (1984-06-01), Holce et al.
patent: 4553134 (1985-11-01), Holt
patent: 4567846 (1986-02-01), Kurtz
patent: 4580062 (1986-04-01), MacLaughlin
patent: 4628160 (1986-12-01), Canevari
patent: 4656458 (1987-04-01), Iwata
patent: 4733324 (1988-03-01), George
patent: 4788517 (1988-11-01), Meister
patent: 4806910 (1989-02-01), Salzer
patent: 4945340 (1990-07-01), Brill
patent: 4982058 (1991-01-01), Schroeder et al.
patent: 5192839 (1993-03-01), Imade et al.
patent: 5248861 (1993-09-01), Kato et al.
patent: 5248959 (1993-09-01), Chern
patent: 5332992 (1994-07-01), Woods
patent: 5534849 (1996-07-01), McDonald et al.
patent: 5543767 (1996-08-01), Elenbaas
Hofsass Jeffery
Lee Benjamin C.
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