Stethoscope chestpiece

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Description

FIG. 1 is a top plan view of a stethoscope chestpiece showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side elevational view being a mirror image thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a cross-sectional view thereof, taken approximately along line 5--5 of FIG. 1;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is an enlarged rear perspective view of the stethoscope chestpiece of FIG. 1; and,

FIG. 8 is an enlarged front perspective view of the chestpiece of FIG. 1.

The broken line showing of the sound tube in FIG. 7 is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D185178 May 1959 Spears
D205171 June 1966 Littman
D213257 January 1969 Littmann
D214002 April 1969 Machlup et al.
D277890 March 5, 1985 Loughridge et al.
D323394 January 21, 1992 Casto et al.
D338269 August 10, 1993 Dufresne et al.
D353196 December 6, 1994 Savage et al.
3108652 October 1963 Littmann
3275099 September 1966 Speelman
3288246 November 1966 Allen
3339667 September 1967 Speelman
3472335 October 1969 Allen
4440258 April 3, 1984 Packard
4475619 October 9, 1984 Packard
4569413 February 11, 1986 Allen
4852684 August 1, 1989 Packard
4913259 April 3, 1990 Packard
4995473 February 26, 1991 Packard
5288953 February 22, 1994 Peart
Other references
  • Brochure entitled, "Littmann Classic II and Pediatric and Infant Stethoscope," dated Jan. 5, 1994, (1 page). Brochure entitled, "The Allen Series", by Newport Instruments, Inc. (1983), (5 pages). Brochure entitled, "Have you heard the latest about Auscultation?", by Welch Allyn Company, (10 pages). .COPYRGT.87. Brochure entitled, "Jetzt mit 10 Seiten Wohnmobel", by Wapema, (8 Pages). .COPYRGT. 88-89. Brochure entitled, "Adgram", vol. 8, Issue 5, by American Diagnostic Corporation, Sep.-Oct 1994, (1 page). Note the Master Adscope.TM. 600. Catalog by nm Medical, (3 pages). .COPYRGT. 94. Brochure entitled, "Anesthesia Specialties", by Buffalo Medical Specialties MFG. Inc. (1983), (17 pages). Brochure entitled, "Series 22 Stethoscope", Series 12 Stethoscope, and Price List dated Mar. 1, 1980, by Newport Instruments, Inc., (4 pages). The Heine Gamma brochure "Gamma 20". Brochure entitled, "Littmann Classic II Stethoscope, The standard of the industry," 3M Health Care, (1 page). Brochure entitled, "Littmann Master Classic Stethoscope, The most efficient general exam stetoscope," 3M Health Care, (1 page). Brochure entitled, "3M Littman Master Cardiology Stethoscope," 3M Health Care, (1 page). Brochure entitled, "Heine Gamma 20", by Heine USA LTD, (1 page). Brochure entiltled, "3M Littmann Cardiology II Stethoscope," (1 page). Brochure entitled, "Die MET-Stethoskop-Baureihe", by F. L. Fischer, (2 pages). Brochure entitled, "Heine Gamma", by Heine USA LTD, (3 pages). Brochure entitled, "Sensitive Dual Membrane Stethoscope", by Erka, (2 pages). Brochure entitled, "Sphygmomanometers, Stethoscope & Accessories", by Welch Allyn Company, (5 pages). Catalog by American Diagnostic Corporation entitled, "Medical Instruments Worldwide Catalogue", (8 pages). Brochure entitled, "Range of Stethoscopes", by Kamed.RTM. Medical Apparatus and Instruments, (13 pages).
Patent History
Patent number: D373824
Type: Grant
Filed: Aug 3, 1994
Date of Patent: Sep 17, 1996
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventors: Joy A. Packard (Somerset, WI), Thomas J. Packard (Somerset, WI)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: I. Simmons
Attorneys: Gary L. Griswold, Walter N. Kirn, Jeffrey J. Hohenshell
Application Number: 0/25,229
Classifications
Current U.S. Class: Stethoscope (24) (D24/134)