Automatic volume control system
US4247045A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Apr 20, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C23/222
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An automatic volume control system for controlling the rate at which fluid, such as paint, is sprayed from spray guns on a mobile vehicle as a function of vehicle speed. The device permits paint lines to be maintained at a uniform thickness independently of the vehicle speed. A tachometer generator generates a voltage proportional to the vehicle road speed which voltage controls the opening of an adjustable hydraulic valve. Hydraulic fluid passing through the hydraulic valve drives a hydraulic generator which in turn drives a spray gun system. The voltage from the tachometer generator thereby causes the hydraulic fluid to drive the hydraulic motor and paint pump at a rate which is proportional to the vehicle road speed. The hydraulic fluid is suitably pumped through the hydraulic valve to the hydraulic motor by a hydraulic pump driven by the power take-off of the vehicle. By using a flow divider valve connected between the hydraulic pump and the hydraulic motor, two separate and parallel independently controllable painting systems may be provided. An intermittent line mechanism powered by the vehicle road wheels, is connected to the spray guns and to hydraulic motor bypass valves i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.