The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 1984
Filed:
Dec. 28, 1981
Willard D Childs, Encinitas, CA (US);
Other;
Abstract
A regulator is provided for controlling air flow at high volume at either low vacuum or low pressure levels. The regulator includes an accumulator chamber having a first opening for providing flow of air from the accumulator chamber to a plenum and a second opening to facilitate air flow from either a positive pressure pump or a vacuum pump to the accumulator chamber. A regulator chamber is provided adjacent to the accumulator chamber for controlling pressure in the accumulator chamber, the two chambers being separated by a piston which moves in response to relative pressure changes in the chambers. This movement is controlled by means of a pressure transducer connected to the regulator chamber which controls air pressure to the regulator chamber through a valve by means of a comparison circuit which senses any difference between the pressure in the accumulator chamber and the desired pressure. In the preferred embodiment, a manifold plate at one end of the accumulator chamber is provided with the required ports and a pair of plugs which can be removably placed in selected ports to change the regulator from a pressure regulator to a vacuum regulator and vice versa.