Cap

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a top perspective view of a first embodiment of a cap, showing the new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a bottom plan view thereof.

FIG. 4 is a front elevational view thereof. The rear elevational view is the same as the front elevational view; and,

FIG. 5 is a perspective view of the bottom of the cap in an inverted position relative to FIGS. 1-4.

The shading shown in the figures is provided merely to illustrate the contour of the new design; it is not intended to be indicative of any particular texture. The cap may be useful for covering inlet ports on a full-face respirator.

Referenced Cited
U.S. Patent Documents
1440989 January 1923 Hammer
5022394 June 11, 1991 Chmiclinski
5535736 July 16, 1996 Tzaw
5647356 July 15, 1997 Osendorf et al.
Patent History
Patent number: D421116
Type: Grant
Filed: Jul 20, 1998
Date of Patent: Feb 22, 2000
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Robert J. Mattila (Jordan, MN), Gary A. Baribeau (Hudson, WI), Joseph G. Reischel (Woodbury, MN), Michael J. Bartholomew (Lake Elmo, MN), Kenneth W. Jensen (Minneapolis, MN)
Primary Examiner: Stella Reid
Assistant Examiner: I Simmons
Attorney: Karl G. Hanson
Application Number: 0/90,935
Classifications
Current U.S. Class: Respirator, Vaporizer, Or Inhalation Tube (4) (D24/110); D24/1101; D24/1102
International Classification: 2902;