Pneumatic multi-weight balancing device
US8465005B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2012 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25J9/144
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A pneumatic load balancing device having an inflatable reservoir establishing via an amplifier a pressure within a lift chamber that is sufficient to balance the weight of an object being lifted. The reservoir is inflated and deflated by inflation and deflation valves that may be operated from an operator control center proximal an end effector of the device. The valves may be actuated via pushbuttons or in a mutually exclusively fashion via a neutrally biased reciprocating actuator. The device allows loads of different weights to be lifted in a semi-automatic fashion with operator involvement to select the load balancing pressure. The device may have an air release system that closes a blocking valve in the event of release of the object and optionally in the event of a loss of air supply. The pressure within the lift chamber is thereby preserved and can be vented at different rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.