Ultrasonic air-in-line detector

- Fisher Scientific Company
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Description

FIG. 1 is a top plan view of an ultrasonic air-in-line detector showing our new design, the bottom plan view being identical;

FIG. 2 is a front elevational view;

FIG. 3 is a top, front and left side perspective view, the right side perspective view being identical;

FIG. 4 is a top, front and left side perspective view, the ultrasonic air-in-line detector now separated; and

FIG. 5 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D220854 June 1971 Lambo et al.
3553575 January 1971 Shea
4312341 January 26, 1982 Zissimopoulos et al.
4565500 January 21, 1986 Jeensalule et al.
4658244 April 14, 1987 Meijer
4751476 June 14, 1988 Meijer
Patent History
Patent number: D308946
Type: Grant
Filed: Mar 18, 1988
Date of Patent: Jul 3, 1990
Assignee: Fisher Scientific Company (Pittsburgh, PA)
Inventors: Larry Wilson (Poway, CA), Laurence Walden (San Diego, CA)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoine D. Davis
Law Firm: Nydegger & Harshman
Application Number: 7/169,756