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 Littmann
D213257 January 1969 Littmann
D214002 April 1969 Machlup et al.
D256951 September 16, 1980 Allen
D277890 March 5, 1985 Loughridge et al.
D323394 January 21, 1992 Casto et al.
D337381 July 13, 1993 Dufresne et al.
D338269 August 10, 1993 Dufresne et al.
D353196 December 6, 1994 Savage et al.
D363120 October 10, 1995 Savage et al.
3108652 October 1963 Littmann
3275099 September 1966 Speelman
3288246 November 1966 Allen
3339667 September 1967 Speelman
3472335 October 1969 Allen
3570625 March 1971 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
5204500 April 20, 1993 Dufresne et al.
5288953 February 22, 1994 Peart
5420382 May 30, 1995 Katz
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, (1987) (10 pages). Brochure entitled, "Jetz mit 10 Seiten Wohnmobel," by Wapema, (1988-1989) (8 pages). 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, (1994) (3 pages). 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). Brochure entitled, "Littmann Classic II Stethoscope, The standard of the industry," 3M HealthCare, (1 page). Prior art. Brochure entitled, "3M Littmann Master Classic Stethoscope, The most efficient general exam stethoscope," 3M HealthCare (1 page). Prior art. Brochure entitled, "Heine Gamma 20" by Heine USA LTD, (1 page). Prior art. Brochure entitled, "Die MET-Stethoskop-Baureihe", by F.L. Fischer, (2 pages). Prior art. Brochure entitled, "3M Littmann Master Cardiology Stethoscope," 3M Health Care (1 page). Prior art. Brochure entitled, "3M Littmann Cardiology II Stethoscope," (1 page). Prior art. Brochure entitled, "Heine Gamma", by Heine USA LTD, (3 pages). Prior art. Brochure entitled, "Sensitive Dual Membrane Stethoscope", by Erka (2 pages). Prior art. Brochure entitled, "Sphygmomanometers, Stethoscopes & Accessories," by Welch Allyn Company, (5 pages). Prior art. Brochure entitled, "Range of Stethoscopes", by Kamed.RTM. Medical Apparatus and Instruments, (13 pages Prior art). Catalog by American Diagnostic Corporation entitled, "Medical Instruments Worldwide Catalogue", (8 pages). Prior art.
Patent History
Patent number: D395509
Type: Grant
Filed: Nov 14, 1995
Date of Patent: Jun 23, 1998
Assignee: Minnesota Mining and Manufacturing Company (Saint 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: 0/46,401
Classifications
Current U.S. Class: Viewing (e.g., Otoscope, Ophthalmoscope, Etc.) (D24/137)
International Classification: 2402;