Patent US3902571A successfully refreshed from Google Patents.
US3902571A
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Elevator control system
Assignee: Hitachi Ltd
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Filing: 1973-11-09
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Granted: 1975-09-02
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Expires: 1993-11-09
Abstract
Abstract In an elevator control system comprising a plurality of elevator cars serving a plurality of floors wherein a hall call generated is registered, so that a car ready to answer that hall call is selected and operatively connected with a guide lamp for informing the waiting prospective passenger which of the cars was selected, the improvements wherein the registration of the hall call is not cancelled but maintained in the event that a car other than the car which was made ready to answer the hall call arrives earlier and is decelerated to serve that floor from which that hall call was originated, the hall call registration being cancelled only when the car indicated by the guide lamp is decelerated to serve the floor.
Inventors
- 👤 Tatsuo Iwasaka
- 👤 Takeo Yuminaka
- 👤 Hideto Matsuzawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:13
CPC Classifications
B; B66; B66B; B66B3/00; B66B1/00; B66B1/02; B66B1/06; B66B1/14; B66B1/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
158 words
An elevator control system comprising a plurality of elevator cars serving a plurality of floors, means for registering a hall call from a prospective passenger, means responsive to said registering means for selecting a car or car group to answer said hall call, means for directing said selected car to proceed to and stop at the floor from which the hall call originated, means responsive to said selecting means for informing a prospective passenger waiting on the landing of a floor at which the specified car or car group will respond to the hall call from the prospective passenger, means for detecting the deceleration or stoppage of the car selected by said selecting means at the floor from which the hall call was originated, and means for cancelling the registration in said registering means of said hall call from said floor only in reSponse to said detector means detecting deceleration or stoppage of that car at said floor.
Claim 2
Dependent Claim
158 words
An elevator control system comprising a plurality of elevator cars serving a plurality of floors, means for registering a hall call from a prospective passenger, means responsive to said registering means for selecting a car or car group to answer said hall call, means for directing said selected car to proceed to and stop at the floor from which the hall call originated, means responsive to said selecting means for informing a prospective passenger waiting on the landing of a floor at which the specified car or car group will respond to the hall call from the prospective passenger, means for detecting the deceleration or stoppage of the car selected by said selecting means at the floor from which the hall call was originated, and means for cancelling the registration in said registering means of said hall call from said floor only in reSponse to said detector means detecting deceleration or stoppage of that car at said floor.
Claim 3
Dependent Claim
80 words
An elevator control system according to claim 1, in which said means for detecting the deceleration or stoppage of a car the expected service of which the prospective passenger waiting at the calling floor is informed of includes for each car, means for detecting the floor where the car is decelerated and means for detecting floors the hall call from which the car is required to answer, and AND means to which the outputs from said two means are applied.
Claim 4
Dependent Claim
64 words
An elevator control system according to claim 1, in which said means for detecting the deceleration or stoppage of a specified car includes means for detecting the deceleration or stoppage of a car in the hoistway adjacent to that of a car the expected service of which the prospective passenger waiting at the floor from which the hall call was originated is informed of.
Claim 5
Dependent Claim
74 words
An elevator control system according to claim 3, in which said means for detecting the deceleration or stoppage of a car in the adjacent hoistway includes for each car a means for detecting the floor where the car is decelerated and means for detecting floors the hall call from which the car in the adjacent hoistway has responded, and AND means to which the outputs from said two means are applied for logical operation.
Claim 6
Dependent Claim
41 words
An elevator control system according to claim 1, in which said means for detecting the deceleration or stoppage of a specified car includes means for detecting the deceleration or stoppage of the specified car or a car in the adjacent hoistway.
Claim 7
Dependent Claim
101 words
An elevator control system according to claim 5, in which said means for detecting the deceleration or stoppage of cars includes means for detecting the floor the hall call from which was answered by the specified car and means for detecting the floor the hall call from which the car in the adjacent hoistway has answered, OR means to which the outputs from said two means are applied, means for detecting the floor at which one of said cars is decelerated or stopped, and AND means to which the outputs from the last-mentioned detector means and said OR means are applied.
Claim 8
Dependent Claim
50 words
An elevator control system according to claim 1, in which said means for detecting the deceleration or stoppage of a specified car includes means for detecting the deceleration or stoppage of a car included in the car group of which the prospective passenger waiting at the calling floor is informed.
Claim 9
Dependent Claim
82 words
An elevator control system according to claim 7, in which said means for detecting the deceleration or stoppage of a car includes means for detecting the floor at which the car included in the car group is decelerated or stopped and means for detecting the floor the hall call from which the car group has responded, both of said floor detecting means being provided for each car group, and AND means to which the outputs from said two detector means are applied.
References Cited (Backward Citations)
US3474885A
Cited
US3739880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |