Pivot mount of elevator load-weighing at car hitch
US5172782A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Nov 15, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G19/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention weighs an elevator car independently of variations in load distribution within the car and variations in the tension distribution in rods and ropes from which the car is suspended. This is accomplished by means of a top hitch plate, a middle hitch plate, and a bottom hitch plate, which are arranged such that the bottom hitch plate has a pivot 16 mounted on it with the middle hitch plate being mounted on the pivot 16 and a load cell and a support being mounted on the middle hitch plate 17 outboard of the rods from which the car 2 is supported. The top hitch plate is connected to a crosshead at its upper surface. The load cell and support bear against the top hitch plate when there is tension in the rods from the weight of the car 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.