US3746131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for controlling a plurality of elevator cars
Assignee: Hitachi Ltd
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Filing: 1971-10-14
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Granted: 1973-07-17
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Expires: 1991-10-14
Abstract
Abstract A system for controlling a plurality of elevator cars in which a hall call originating means is disposed at each floor landing so that passengers standing at the floor landing can designate the floors to which they want to be transferred, and a target floor memory is provided for each elevator car to store information as to the floors at which such elevator car has already been instructed to stop. In the system, means are provided to detect the coincidence between the floor numbers designated by a hall call originating from one of the floors and the floor numbers stored already in the target floor memory for each elevator car so that the elevator car for which the coincidence occurs in a greater number can be preferentially selected to be stopped at the specific floor.
Inventors
- 👤 K Hirasawa
- 👤 K Kawatake
- 👤 T Iwasaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:59
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/24; B66B1/2408; B66B1/2458; B66B2201/00; B66B2201/10; B66B2201/103; B66B2201/20; B66B2201/211; B66B2201/212; B66B2201/213
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
In an elevator control system for controlling a plurality of elevator cars servicing a plurality of service floor landings a service priority determining system comprising hall call originating means disposed at each floor landing for generating floor landing signals of designated floors so that passengers standing at the floor landing can designate the floors to which they want to be transferred, target floor memory means provided for each of said elevator cars for storing request signals pertaining to the floors at which each said elevator car has been instructed to stop, coincidence detecting means provided for each of said elevator cars for detecting the coincidence between the floor landing signals representing floor numbers designated by a hall call originating from one of the floors and the request signals representing floor numbers stored in said target floor memory means, and means for determining the priority order of operation of said elevator cars in response to said coincidence detecting means so that the elevator car for which the coincidence between floor landing signals and request signals occurs in a greater number can be preferentially selected to respond to the hall originating from such floor.
Claim 2
Dependent Claim
192 words
In an elevator control system for controlling a plurality of elevator cars servicing a plurality of service floor landings a service priority determining system comprising hall call originating means disposed at each floor landing for generating floor landing signals of designated floors so that passengers standing at the floor landing can designate the floors to which they want to be transferred, target floor memory means provided for each of said elevator cars for storing request signals pertaining to the floors at which each said elevator car has been instructed to stop, coincidence detecting means provided for each of said elevator cars for detecting the coincidence between the floor landing signals representing floor numbers designated by a hall call originating from one of the floors and the request signals representing floor numbers stored in said target floor memory means, and means for determining the priority order of operation of said elevator cars in response to said coincidence detecting means so that the elevator car for which the coincidence between floor landing signals and request signals occurs in a greater number can be preferentially selected to respond to the hall originating from such floor.
Claim 3
Dependent Claim
71 words
An elevator control system as claimed in claim 1, which comprises distance detecting means provided for each of said elevator cars for detecting the distance between the specific floor originating the hall call and each said elevator car, said means for determining the priority order of said elevator cars being responsive also to said distance detecting means so that priority is also determined on the basis of said distances thus detected.
Claim 4
Dependent Claim
88 words
An elevator control system as claimed in claim 1, which comprises distance detecting means provided for each of said elevator cars for detecting the actual distance to be run by each said elevator car until it reaches the specific floor originating the hall call taking the operating schedule of each said elevator car into account, said means for determining the priority order of said elevator cars being responsive also to said distance detecting means so that priority is also determined on the basis of the distances thus detected.
Claim 5
Dependent Claim
53 words
An elevator control system as claimed in claim 1, in which the floor numbers designated by the hall call originating from the specific floor and applied to said coincidence detecting means include also the floor numbers designated by an additional hall call originating from the same floor within a predetermined period of time.
Claim 6
Dependent Claim
38 words
An elevator control system as claimed in claim 3, which comprises means for counting time so that it starts its operation in response to the appearance of the first hall call and counts a predetermined period of time.
Claim 7
Dependent Claim
68 words
An elevator control system as claimed in claim 1, in which means are provided so that, upon completion of the selection of the elevator car for servicing the specific floor in response to the appearance of an output from said priority order determining means, said coincidence detecting means start their operation again for selecting an elevator car suitable for responding to a hall call originating from another floor.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |