Personal respiratory protection device having an exhalation valve
Henderson , et al. October 3, 2
U.S. patent number D431,647 [Application Number D/059,264] was granted by the patent office on 2000-10-03 for personal respiratory protection device having an exhalation valve. This patent grant is currently assigned to 3M Innovative Properties Company. Invention is credited to John W. Bryant, Desmond T. Curran, James F. Dyrud, Christopher P. Henderson.
| United States Patent | D431,647 |
| Henderson , et al. | October 3, 2000 |
Personal respiratory protection device having an exhalation valve
Claims
The ornamental design for a personal respiratory protection device having an exhalation valve, as shown and described.
| Inventors: | Henderson; Christopher P. (Durham, GB), Bryant; John W. (High Shincliffe, GB), Curran; Desmond T. (Durham, GB), Dyrud; James F. (New Richmond, WI) |
|---|---|
| Assignee: | 3M Innovative Properties
Company (St. Paul, MN) |
| Appl. No.: | D/059,264 |
| Filed: | September 6, 1996 |
| Current U.S. Class: | D24/110.1; D24/110.6 |
| Current International Class: | 2902 |
| Field of Search: | ;D24/110.1,110.6 ;128/206.19,206.12,207.16,207.12,206.15,206.17 |
References Cited [Referenced By]
U.S. Patent Documents
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| D326541 | May 1992 | McBrearty, Jr. |
| D347298 | May 1994 | Japuntich et al. |
| D347299 | May 1994 | Bryant et al. |
| D380545 | July 1997 | Nozaki et al. |
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| 2012505 | August 1935 | Goldsmith |
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| 4417575 | November 1983 | Hilton et al. |
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| 4951664 | August 1990 | Niemeyer |
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| 5322061 | June 1994 | Brunson |
| 5673690 | October 1997 | Tayebi et al. |
| 2 103 491 | Feb 1983 | GB | |||
Other References
|
Racal Health & Safety Product Literature for "Delta.TM. Disposable Respirators" (1993). . Glendale Optical Company Product Literature for "Glendale Respiratory Protection" (Feb. 1983).. |
Primary Examiner: Simmons; Ian
Attorney, Agent or Firm: Hanson; Karl G.
Description
FIG. 1 is a perspective view of a personal respiratory protection device having an exhalation valve showing the new design.
FIG. 2 is a front elevational view thereof.
FIG. 3 is a rear elevational view thereof.
FIG. 4 is a top elevational view thereof.
FIG. 5 is a bottom elevational view thereof; and,
FIG. 6 is a right elevational view thereof. The left side is a mirror image of the right side.
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