US5086450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency intercommunication system for elevator
Assignee: Mitsubishi Electric Corp
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Filing: 1990-08-17
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Granted: 1992-02-04
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Expires: 2010-08-17
Abstract
Abstract An emergency intercommunication system for an elevator has an interphone unit and an intercommunication command switch located in an elevator car. A telephone number input apparatus for inputting the desired telephone number is provided in an elevator hall, in connection with a register apparatus for storing the input telephone number. An intercommunication command detecting section for detecting the actuation of the switch is provided in connection with an emergency call apparatus for automatically dialing the stored telephone number to connect the interphone unit with a telephone having the telephone number when the actuation of the switch is detected by the detecting apparatus. Preferably, an identification number input apparatus is provided in the elevator hall so that the register apparatus stores the telephone number only when it is input together with a predetermined identification number.
Inventors
- 👤 Shigeo Kitagawa
- 👤 Kenzo Tachino
- 👤 Yasuhiro Nagata
- 👤 Tomoichiro Yamamoto
- 👤 Shigemi Iwata
- 👤 Terumi Hirabayashi
- 👤 Junichi Tanino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:55
CPC Classifications
B; B66; B66B; B66B3/00; H; H04; H04M; H04M11/00; H04M11/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
An emergency intercommunication system for an elevator comprising: a telephone number input means provided in an elevator hall for inputting the desired telephone number; a register means for storing the telephone number input through said telephone number input means; an interphone unit and an intercommunication command switch both provided in an elevator car; an intercommunication command detecting means for detecting the actuation of said intercommunication command switch; and an emergency call means for, upon the detection of the actuation of said intercommunication command switch by said intercommunication command detecting means, automatically dialing the telephone number stored in said register means to connect said interphone unit with a telephone having the telephone number.
Claim 2
Dependent Claim
112 words
An emergency intercommunication system for an elevator comprising: a telephone number input means provided in an elevator hall for inputting the desired telephone number; a register means for storing the telephone number input through said telephone number input means; an interphone unit and an intercommunication command switch both provided in an elevator car; an intercommunication command detecting means for detecting the actuation of said intercommunication command switch; and an emergency call means for, upon the detection of the actuation of said intercommunication command switch by said intercommunication command detecting means, automatically dialing the telephone number stored in said register means to connect said interphone unit with a telephone having the telephone number.
Claim 3
Dependent Claim
20 words
A system according to claim 1, further comprising an adapter for connecting said interphone unit with said emergency call means.
Claim 4
Dependent Claim
19 words
A system according to claim 2, wherein said adapter includes said register means and said intercommunication command detecting means.
Claim 5
Dependent Claim
55 words
A system according to claim 1, further comprising an identification number input means provided in said elevator hall for inputting an identification number, said register means storing a telephone number only when said telephone number and said identification number have been input from said telephone number input means and said identification number input means, respectively.
Claim 6
Dependent Claim
43 words
A system according to claim 4 wherein said telephone number input means is an apparatus for reading a card storing a telephone number, said register means storing the telephone number when said telephone number input means reads the telephone number from the card.
Claim 7
Dependent Claim
89 words
An emergency intercommunication system for an elevator comprising: means for reading a card containing magnetic information including a telephone number; a register for storing the telephone number read by said means for reading a card; an intercommunication command detecting apparatus for detecting the actuation of an intercommunication command switch; and an emergency call apparatus for dialing the telephone number stored in said register means upon detection of the actuation of the intercommunication command switch by said intercommunication detecting means, thereby connecting said interphone unit with said emergency call means.
Claim 8
Dependent Claim
89 words
An emergency intercommunication system for an elevator comprising: means for reading a card containing magnetic information including a telephone number; a register for storing the telephone number read by said means for reading a card; an intercommunication command detecting apparatus for detecting the actuation of an intercommunication command switch; and an emergency call apparatus for dialing the telephone number stored in said register means upon detection of the actuation of the intercommunication command switch by said intercommunication detecting means, thereby connecting said interphone unit with said emergency call means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |