David Thomas Bellefeuille
Engineers at 9 Ave, Denver, CO

License number
Colorado 22795
Issued Date
Aug 3, 1984
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
2811 W 9Th Ave, Denver, CO 80204
LicenseFiles verified this license of Dec 9, 2016 at the Colorado - Department of Regulatory Agencies.

Professional information

David Bellefeuille Photo 1

Gas Leak Meter

US Patent:
4524608, Jun 25, 1985
Filed:
Dec 5, 1983
Appl. No.:
6/558255
Inventors:
David T. Bellefeuille - Aurora CO
Robert S. Beckwith - Denver CO
International Classification:
G01M 308
US Classification:
73 405R
Abstract:
A gas leak meter is directly attached to a valve box having a leaking valve therein. Based upon the rate of gas leakage, a decision can be made to delay or replace the leaking valve. The gas leak meter has a stopper that is placed into the valve box. The stopper has a rubber tube attached thereon and this tube leads to a gas collector which operates at atmospheric pressure. In a given period of time, the rate of gas leakage can be determined based upon the amount of gas collected.

Engineers licenses in Colorado