US3732950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator systems
Assignee: Westinghouse Electric Corp
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Filing: 1971-12-06
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Granted: 1973-05-15
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Expires: 1991-12-06
Abstract
Abstract An elevator system having a bank of elevator cars which, under predetermined system conditions, become available for assignment and dispatching from the landings served thereby. The elevator cars are utilized more beneficially in certain types of structures, by modifying the basis for determining car availability, and the basis for determining the existence of a predetermined demand for service, upon the occurrence of predetermined traffic conditions and car positions.
Inventors
- 👤 H Savino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:26
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/02; B66B1/06; B66B1/14; B66B1/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
274 words
An elevator system, comprising: a structure having a plurality of landings, with said landings being divided into zones, a plurality of cars mounted for movement relative to said structure to serve said landings, and control means controlling the movement of the cars between the landings, said control means including call registering means, availability means, zone demand means, master zone demand means, and assignment means, said call registering means being operable for registering a call for service from a plurality of said landings. said availability means being associated with each of a plurality of said cars and operable to cOndition the associated car to be available for assignment to serve registered calls, said zone demand means being associated with a plurality of zones and operable in response to the registration of calls at a landing to establish a demand for service to the associated zone, said master zone demand means being operable from a first condition to a second condition responsive to the presence of zone demands in excess of the number of cars serving registered calls, said master zone demand means including means for sensing whether a car approaching a registered call ahead of its direction of travel, which call requests service in the direction of travel of the car, is in the process of serving another landing, said master zone demand means counting a car as serving a registered call only when the car is moving and not in the process of serving a landing, said assignment means being responsive to the operation of said master zone demand means to its second condition, to assign an available car to serve the registered calls.
Claim 2
Dependent Claim
274 words
An elevator system, comprising: a structure having a plurality of landings, with said landings being divided into zones, a plurality of cars mounted for movement relative to said structure to serve said landings, and control means controlling the movement of the cars between the landings, said control means including call registering means, availability means, zone demand means, master zone demand means, and assignment means, said call registering means being operable for registering a call for service from a plurality of said landings. said availability means being associated with each of a plurality of said cars and operable to cOndition the associated car to be available for assignment to serve registered calls, said zone demand means being associated with a plurality of zones and operable in response to the registration of calls at a landing to establish a demand for service to the associated zone, said master zone demand means being operable from a first condition to a second condition responsive to the presence of zone demands in excess of the number of cars serving registered calls, said master zone demand means including means for sensing whether a car approaching a registered call ahead of its direction of travel, which call requests service in the direction of travel of the car, is in the process of serving another landing, said master zone demand means counting a car as serving a registered call only when the car is moving and not in the process of serving a landing, said assignment means being responsive to the operation of said master zone demand means to its second condition, to assign an available car to serve the registered calls.
Claim 3
Dependent Claim
45 words
The elevator system of claim 1 wherein the assignment means includes means for selecting the zone to which a car is assigned from a plurality of zones requiring service, according to the pattern of such zones and the pattern of cars already serving those zones.
Claim 4
Dependent Claim
48 words
The elevator system of claim 1 wherein the call registering means includes means operative to register calls for service in a first direction from a plurality of the landings, and the master zone demand means indicates when all zones having registered first direction landing calls are provided for.
Claim 5
Dependent Claim
62 words
The elevator system of claim 3 wherein a first direction landing call is only considered provided for by a car displaced in the second direction from the zone having a registered first direction call, when the car is moving toward the zone of the call and is not in the process of stopping at the landing outside the zone of the call.
Claim 6
Dependent Claim
205 words
An elevator system, comprising: a structure having a plurality of landings, including lower and upper terminal landings, and a plurality of intermediate landings, a plurality of cars mounted for movement relative to said structure to serve said landings, and control means controlling the movement of the cars between the landings, said control means including landing call registering means, car call registering means, and availability means, said landing call registering means being operable for registering a call for service from a plurality of said landings, said car call registering means being operable for registering a call for each of the landings desired for the load within the associated car, said availability means being associated with each of a plurality of cars and operable under predetermined conditions, including the requirement that the car be conditioned for up travel, to condition the associated car to be available for assignment to serve calls registered on the landing call registering means, and traffic sensing means responsive to a predetermined traffic demand for rendering said availability means operable to condition a car located at the upper terminal floor to be available to serve calls registered on said landing call registering means, notwithstanding the car being conditioned for down travel with passengers.
Claim 7
Dependent Claim
205 words
An elevator system, comprising: a structure having a plurality of landings, including lower and upper terminal landings, and a plurality of intermediate landings, a plurality of cars mounted for movement relative to said structure to serve said landings, and control means controlling the movement of the cars between the landings, said control means including landing call registering means, car call registering means, and availability means, said landing call registering means being operable for registering a call for service from a plurality of said landings, said car call registering means being operable for registering a call for each of the landings desired for the load within the associated car, said availability means being associated with each of a plurality of cars and operable under predetermined conditions, including the requirement that the car be conditioned for up travel, to condition the associated car to be available for assignment to serve calls registered on the landing call registering means, and traffic sensing means responsive to a predetermined traffic demand for rendering said availability means operable to condition a car located at the upper terminal floor to be available to serve calls registered on said landing call registering means, notwithstanding the car being conditioned for down travel with passengers.
Claim 8
Dependent Claim
52 words
The elevator system of claim 5 including load sensing means responsive to load within each of the cars, said load sensing means overriding the traffic sensing means when a car exceeds a predetermined loading, to prevent the traffic sensing means from conditioning a car to be available for serving registered landing calls.
Claim 9
Dependent Claim
26 words
The elevator system of claim 5 wherein the predetermined traffic condition sensed by the traffic sensing means is demand for service towards the first terminal floor.
Claim 10
Dependent Claim
148 words
The elevator system of claim 5 wherein the plurality of landings are divided into a plurality of zones, and the traffic sensing means includes zone demand means and master zOne demand means, said zone demand means being associated with a plurality of said zones and operable in response to a registration of a call at a landing on the landing call registration means to establish a demand for service to the associated zone, said master zone demand means being operable from a first condition to a second condition responsive to the presence of zone demands by said zone demand means in excess of the number of cars serving registered landing calls, the availability means being responsive to the second condition of said master zone demand means to condition a car located at the upper terminal to be available to serve calls registered by the landing call registration means.
Claim 11
Dependent Claim
34 words
The elevator system of claim 8 including assignment means, said assignment means being responsive to the second condition of the master zone demand means, to assign an available car to serve registered landing calls.
Claim 12
Dependent Claim
52 words
The elevator system of claim 8 including load sensing means responsive to load within each of the cars, said load sensing means overriding the traffic sensing means when a car exceeds a predetermined loading to prevent the traffic sensing means from conditioning a car to be available for serving registered landing calls.
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |