Plungerless syringe

- Vital Signs, Inc.
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Description

FIG. 1 is a front elevational view of the plungerless syringe showing my new design, the rear elevational being identical;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof; and,

FIG. 4 is a right side elevational view thereof, the left side being identical.

Referenced Cited
U.S. Patent Documents
D236235 August 1975 Payton
D246321 November 8, 1977 Lofman
D269706 July 12, 1983 Green
D288006 January 27, 1987 Bergstrom et al.
3337039 August 1967 Knittel et al.
3340869 September 1967 Bane
3387610 June 1968 Richmond
3473524 October 1969 Drewe
3557788 January 1971 Swartz
3802435 April 1974 Claasen
3844284 October 1974 Schoenfeld et al.
4254769 March 10, 1981 Sneider
4411656 October 25, 1983 Cornett
4753638 June 28, 1988 Peters
5102398 April 7, 1992 Farris
5242422 September 7, 1993 Schneberger et al.
5370626 December 6, 1994 Farris
5538506 July 23, 1996 Farris et al.
Patent History
Patent number: D398396
Type: Grant
Filed: Feb 28, 1997
Date of Patent: Sep 15, 1998
Assignee: Vital Signs, Inc. (Totowa, NJ)
Inventor: Richard Q. Poynter (Palm Beach Gardens, FL)
Primary Examiner: Susan J. Lucas
Assistant Examiner: Cynitha E. Ramirez
Attorney: R. Gale Rhodes, Jr.
Application Number: 0/67,145
Classifications
Current U.S. Class: Resilient (e.g., Squeeze Bulb, Bellows, Etc.) (9) (D24/115)
International Classification: 2402;