Respiratory protection device that has rapid threaded clean air
US007320722B2
(12)
(54)
United States Patent
(10) Patent N0.:
Mittelstadt et a1.
(45) Date of Patent:
RESPIRATORY PROTECTION DEVICE THAT HAS RAPID THREADED CLEAN AIR SOURCE ATTACHMENT
2,706,983 A *
3,840,006 A 4,111,197 A
(US); John M. Pilgrim, Woodbury, MN GB
2/2001
OTHER PUBLICATIONS Product Detail for GE SmartWaterTM Household Water Filtration System obtained from internet on Oct. 27, 2004 at http://WWW.
U.S.C. 154(b) by 426 days.
geappliances.com/smaItWater/modelifs.htm?GXSV65F.
(Continued) Primary ExamineriFrank Lawrence
Oct. 29, 2004
(65)
Assistant ExamineriRobert A Clemente
(74) Attorney, Agent, or FirmiAnna A. WetZels
Prior Publication Data
US 2006/0090754 A1
(51)
2353078 A
Subject to any disclaimer, the term of this patent is extended or adjusted under 35
(21) Appl. N0.: 10/977,076 Filed:
128/20624
(Continued)
St. Paul, MN (US)
(22)
4/1955 Matheson et al.
10/1974 Buck et al. 9/1978 Warncke et a1.
FOREIGN PATENT DOCUMENTS
(73) Assignee: 3M Innovative Properties Company, Notice:
Jan. 22, 2008
(Continued)
(75) Inventors: William A. Mittelstadt, Woodbury, MN (Us)
US 7,320,722 B2
(57)
May 4, 2006
ABSTRACT
A personal respiratory protection device 10 that comprises a
Int. Cl.
B01D 46/00 A62B 9/04
(2006.01) (2006.01)
(52)
US. Cl. ................... .. 55/505; 55/502; 55/DIG. 33;
(58)
Field of Classi?cation Search ................ ..
55/DIG. 35; 128/202.27; 128/206.17 55/502,
55/504, 505, 507, 510, DIG. 33, DIG. 35;
128/201.25, 202.27, 204.18, 205.27, 205.29, 128/206.16, 206.17, 206.21, 206.24, 206.12, 128/206.28, 206.29, 207.12, 207.18, 204.12, 128/204.13, 204.23 See application ?le for complete search history.
(56)
References Cited U.S. PATENT DOCUMENTS 2,142,064 A * 2,652,828 A *
mask body 12 that has a structure 35 located on it for receiving a clean air supply source such as a ?lter cartridge 14. The clean air receiving structure 35 has a ?rst threaded portion 34. The clean air supply source has a second threaded portion 58 that has a thread 60 that mates With a
thread 36 of the ?rst threaded portion 34. The ?rst and second threaded portions 34 and 58 engage each other at a
high thread pitch and include an integral détente. A stop prevents over-rotation of the clean air supply source 14 relative to the mask body 12 during the securement opera tion. The inventive device alloWs the clean air supply source 14 to be attached to the mask body 12 With minimal rotation and is su?iciently intuitive that users may only need one hand to attach and replace the clean air source component 14 Without having to remove the respirator 10 from their face.
12/1938 Whipple .............. .. 128/206.16 9/1953
Matheson ............ ..
128/201.19
16 Claims, 6 Drawing Sheets
US 7,320,722 B2 Page 2 US. PATENT DOCUMENTS 4,172,467 A
10/1979 WarnOW
4,179,274 A
12/1979
4,280,491 A
4,422,861 4437460 4,462,399 4,548,626 4586500 4,730,747 4,850,346 4,886,056
A A A A A A A A
4934361 A
4,965,887 A 5,022,901 A
5,033,465 5,036,844 5,062,421 5,063,926 5,125,402
A A A A A
6,248,280 B1 6,250,299 B1 D449,099 s
Moon ........................ .. 55/524
D449’103 S
7/1981 Berg er 91-
12/1983 3/1984 7/1984 10/1985 5/1986 3/1988 7/1989 12/1989
>1
(12)
(54)
United States Patent
(10) Patent N0.:
Mittelstadt et a1.
(45) Date of Patent:
RESPIRATORY PROTECTION DEVICE THAT HAS RAPID THREADED CLEAN AIR SOURCE ATTACHMENT
2,706,983 A *
3,840,006 A 4,111,197 A
(US); John M. Pilgrim, Woodbury, MN GB
2/2001
OTHER PUBLICATIONS Product Detail for GE SmartWaterTM Household Water Filtration System obtained from internet on Oct. 27, 2004 at http://WWW.
U.S.C. 154(b) by 426 days.
geappliances.com/smaItWater/modelifs.htm?GXSV65F.
(Continued) Primary ExamineriFrank Lawrence
Oct. 29, 2004
(65)
Assistant ExamineriRobert A Clemente
(74) Attorney, Agent, or FirmiAnna A. WetZels
Prior Publication Data
US 2006/0090754 A1
(51)
2353078 A
Subject to any disclaimer, the term of this patent is extended or adjusted under 35
(21) Appl. N0.: 10/977,076 Filed:
128/20624
(Continued)
St. Paul, MN (US)
(22)
4/1955 Matheson et al.
10/1974 Buck et al. 9/1978 Warncke et a1.
FOREIGN PATENT DOCUMENTS
(73) Assignee: 3M Innovative Properties Company, Notice:
Jan. 22, 2008
(Continued)
(75) Inventors: William A. Mittelstadt, Woodbury, MN (Us)
US 7,320,722 B2
(57)
May 4, 2006
ABSTRACT
A personal respiratory protection device 10 that comprises a
Int. Cl.
B01D 46/00 A62B 9/04
(2006.01) (2006.01)
(52)
US. Cl. ................... .. 55/505; 55/502; 55/DIG. 33;
(58)
Field of Classi?cation Search ................ ..
55/DIG. 35; 128/202.27; 128/206.17 55/502,
55/504, 505, 507, 510, DIG. 33, DIG. 35;
128/201.25, 202.27, 204.18, 205.27, 205.29, 128/206.16, 206.17, 206.21, 206.24, 206.12, 128/206.28, 206.29, 207.12, 207.18, 204.12, 128/204.13, 204.23 See application ?le for complete search history.
(56)
References Cited U.S. PATENT DOCUMENTS 2,142,064 A * 2,652,828 A *
mask body 12 that has a structure 35 located on it for receiving a clean air supply source such as a ?lter cartridge 14. The clean air receiving structure 35 has a ?rst threaded portion 34. The clean air supply source has a second threaded portion 58 that has a thread 60 that mates With a
thread 36 of the ?rst threaded portion 34. The ?rst and second threaded portions 34 and 58 engage each other at a
high thread pitch and include an integral détente. A stop prevents over-rotation of the clean air supply source 14 relative to the mask body 12 during the securement opera tion. The inventive device alloWs the clean air supply source 14 to be attached to the mask body 12 With minimal rotation and is su?iciently intuitive that users may only need one hand to attach and replace the clean air source component 14 Without having to remove the respirator 10 from their face.
12/1938 Whipple .............. .. 128/206.16 9/1953
Matheson ............ ..
128/201.19
16 Claims, 6 Drawing Sheets
US 7,320,722 B2 Page 2 US. PATENT DOCUMENTS 4,172,467 A
10/1979 WarnOW
4,179,274 A
12/1979
4,280,491 A
4,422,861 4437460 4,462,399 4,548,626 4586500 4,730,747 4,850,346 4,886,056
A A A A A A A A
4934361 A
4,965,887 A 5,022,901 A
5,033,465 5,036,844 5,062,421 5,063,926 5,125,402
A A A A A
6,248,280 B1 6,250,299 B1 D449,099 s
Moon ........................ .. 55/524
D449’103 S
7/1981 Berg er 91-
12/1983 3/1984 7/1984 10/1985 5/1986 3/1988 7/1989 12/1989
>1
