Instrument calibrating demand flow regulator

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Description

FIG. 1 is a front elevational view of the instrument calibrating demand flow regulator illustrating my design;

FIG. 2 is a top plan view of the instrument calibrating demand flow regulator;

FIG. 3 is a bottom plan view of the instrument calibrating demand flow regulator;

FIG. 4 is a left elevational side view of the instrument calibrating demand flow regulator;

FIG. 5 is a right elevational side view of the instrument calibrating demand flow regulator; and,

FIG. 6 is a rear elevational side view of the instrument calibrating demand flow regulator.

Referenced Cited
U.S. Patent Documents
3467137 September 1969 Brown
3633611 January 1972 MacNiel
4140113 February 20, 1979 Pedersen
4214580 July 29, 1980 Pedersen
5343858 September 6, 1994 Winefordner et al.
5464009 November 7, 1995 Taracek-Gintowt
5503140 April 2, 1996 Winefordner et al.
5566669 October 22, 1996 Komesaroff
Patent History
Patent number: D383406
Type: Grant
Filed: Mar 1, 1996
Date of Patent: Sep 9, 1997
Assignee: Air Liquide America Corporation (Houston, TX)
Inventor: George D. Baker (Cambridge, MD)
Primary Examiner: Antoine Duval Davis
Law Firm: Burns, Doane, Swecker & Mathis, L.L.P.
Application Number: 0/50,989
Classifications
Current U.S. Class: Volume, Flow Or Rate (D10/96)
International Classification: 1004;