US4951786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load distribution detecting system for elevator
Assignee: Otis Elevator Co
•
Filing: 1989-06-06
•
Granted: 1990-08-28
•
Expires: 2009-06-06
Abstract
Abstract A load distribution detecting matrix is provided in the floor of an elevator cab. The elevator controller receives information from the matrix and can alter operation of the elevator in response to detection of predetermined load distribution characteristics.
Inventors
- 👤 Hitoshi Haraguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:34
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/34; B66B1/3476; B66B1/3484
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
An elevator control system for modifying operation of an elevator, said system comprising a matrix of sensor means associated with the floor of an elevator cab for detecting the location and shapes of loaded areas on the cab floor caused by passengers in the cab, and microprocessor means connected to said sensor means for altering elevator movement or door operation in response to reception of predetermined signal patterns from said sensor means signifying pre-inputted information relating to a type of passenger in the cab or a type of passenger movement in the cab.
Claim 2
Dependent Claim
93 words
An elevator control system for modifying operation of an elevator, said system comprising a matrix of sensor means associated with the floor of an elevator cab for detecting the location and shapes of loaded areas on the cab floor caused by passengers in the cab, and microprocessor means connected to said sensor means for altering elevator movement or door operation in response to reception of predetermined signal patterns from said sensor means signifying pre-inputted information relating to a type of passenger in the cab or a type of passenger movement in the cab.
Claim 3
Dependent Claim
46 words
The elevator control system of claim 1 wherein said sensor means is operable to detect the presence of a wheelchair in the cab, and wherein said microprocessor means is operable to delay cab door closing operation upon receipt of a wheelchair signal from said sensor means.
Claim 4
Dependent Claim
25 words
The elevator control system of claim 1 wherein said sensor means is operable to distinguish between adult male and adult female passengers in the cab.
Claim 5
Dependent Claim
57 words
The elevator control system of claim 3 wherein said sensor means is operable to detect random movement of adult male and female passengers in the cab, and said microprocessor means is operable to stop movement of the cab and open the cab and hall doors upon receipt of such a random movement signal from said sensor means.
Claim 6
Dependent Claim
23 words
The elevator control system of claim 1 wherein said sensor means is operable to distinguish between adult and children passengers in the cab.
Claim 7
Dependent Claim
65 words
The elevator control system of claim 5 wherein said microprocessor means is operable to detect multiple floor selector button actuation arising when one or more children are detected by said sensor means as the sole passengers in said cab whereupon said microprocessor means is operable to cancel all but one floor selection and retain said cab at said floor until the children exit said cab.
Claim 8
Dependent Claim
24 words
The elevator control system of claim 1 wherein said sensor means is further operable to detect the level of load in said loaded areas.
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) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |