US4741333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust-free garment
Assignee: Shimizu Construction Co Ltd
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Filing: 1987-01-30
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Granted: 1988-05-03
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Expires: 2007-01-30
Abstract
Abstract A dust-free garment including: a garment body having garment opening portions opening to the outside; an air passage system, attached to the garment body and having an outlet adapted to communicate to a dust collector for exhausting air therein to the dust collector to filter air; and an air entrance mechanism located in the vicinity of at least one of the garment opening portions and communicated to the air passage system for entering air into the air passage system.
Inventors
- 👤 Yoshinobu Suzuki
- 👤 Shusaku Nisiate
- 👤 Kenzo Sato
- 👤 Masakazu Ueno
- 👤 Hiroaki Shimizu
- 👤 Katsunori Fujimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:12
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/12; A41D13/1209; Y; Y10; Y10S; Y10S128/00; Y10S128/91
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
117 words
A dust-free garment comprising: a garment body having at least one garment opening in communication with the atmosphere outside said garment; an air passage system, attached to the garment body and having an outlet to communicate to a dust collector for exhausting air therein to the dust collector to filter air exhausted from inside the garment to said outside atmosphere; and air entrance means located in the vicinity of each opening to surround said opening, said air entrance means being in communication with said air passage system for introducing air into the air passage system, whereby air is introduced into said air passage system through said air entrance means by producing negative air pressure around said opening.
Claim 2
Dependent Claim
117 words
A dust-free garment comprising: a garment body having at least one garment opening in communication with the atmosphere outside said garment; an air passage system, attached to the garment body and having an outlet to communicate to a dust collector for exhausting air therein to the dust collector to filter air exhausted from inside the garment to said outside atmosphere; and air entrance means located in the vicinity of each opening to surround said opening, said air entrance means being in communication with said air passage system for introducing air into the air passage system, whereby air is introduced into said air passage system through said air entrance means by producing negative air pressure around said opening.
Claim 3
Dependent Claim
58 words
A dust-free garment as recited in claim 1, wherein the garment body comprises an air-impermeable covering member and an air-permeable lining attached to the covering member, and wherein the air passage system comprises a suction tube having suction through-holes along its length for entering air thereinto, the suction tube being interposed between the covering member and the lining.
Claim 4
Dependent Claim
58 words
A dust-free garment as recited in claim 1, wherein the garment body comprises an air-permeable covering member and an air-permeable lining attached to the covering member, and wherein the air passage system comprises a suction tube having suction through-holes along its length for entering air thereinto, the suction tube being interposed between the covering member and the lining.
Claim 5
Dependent Claim
73 words
A dust-free garment as recited in claim 2 or 3, wherein the air entrance means comprises a length of entrance tube having through entrance holes for entering air form the atmosphere outside said garment body thereinto, the entrance tube connected to the suction tube for mutual communication, such that the air exhausted from said air passage system is comprised of air from outside said garment body and air from inside said garment body.
Claim 6
Dependent Claim
49 words
A dust-free garment as recited in claim 4, wherein the entrance tube is substantially in the shape of a ring, the entrance tube having the air entrance holes formed at regular angular intervals, and wherein the entrance tube is attached to said garment body at one of said openings.
Claim 7
Dependent Claim
54 words
A dust-free garment as recited in claim 5, wherein the garment body has at least two openings wherein the suction tube is provided in a plurality, and wherein the air passage system further comprises an accumulating chamber, communicated to each suction tube for introducing air thereinto, the accumulating chamber being communicated to the outlet.
Claim 8
Dependent Claim
21 words
A dust-free garment as recited in claim 6, wherein the suction tubes are provided with flexible means for providing flexibility thereto.
Claim 9
Dependent Claim
28 words
A dust-free garment as recited in claim 7, wherein the flexible means comprises one of both a meandered portion, looped portion and bellows portion of the suction tubes.
Claim 10
Dependent Claim
55 words
A dust-free garment as recited in claim 8, further comprising a pair of gloves, and wherein the air passage system further comprises glove suction tubes, each adapted to communicate at one end thereof to the accumulating chamber and at the other end to the inside of a corresponding glove for sucking air from the glove.
Claim 11
Dependent Claim
64 words
A dust-free garment as recited in claim 9, wherein the dust collector is a portable dust collector adapted to be communicated to the outlet and to be attached to a user, the dust collector comprising a suction pump for sucking air from the outlet, a filter for filtering the sucked air and electric power supply means for supplying electric power to the suction pump.
Claim 12
Dependent Claim
25 words
A dust-free garment as recited in claim 10, wherein the dust collector is adapted to be mounted to at least one shoe of the user.
Claim 13
Dependent Claim
45 words
A dust-free garment as recited in claim 1, wherein the air passage system comprises: an air impermeable tube attached to the garment body and having the outlet; and an air-permeable resilient spacer enclosed in the air-impermeable tube so as to extend along the air-impermeable tube.
Claim 14
Dependent Claim
40 words
A dust-free garment as recited in claim 12, wherein the air passage system further comprises a flexible tube core disposed within the air-impermeable tube to extend along the air-impermeable tube, the flexible tube being covered with the air-permeable resilient spacer.
Claim 15
Dependent Claim
19 words
A dust-free garment as recited in claim 12 or 13, wherein the garment body is made of meshed cloth.
Claim 16
Dependent Claim
62 words
A dust-free garment as recited in claim 14, wherein the air-impermeable tube has an entrance opening situated in the vicinity of a garment opening, and wherein the air entrance means comprises a meshed cloth member attached to the air-impermeable tube to close the entrance opening, the meshed cloth member covering part of the spacer located in the vicinity of the entrance opening.
Claim 17
Dependent Claim
60 words
A dust-free garment as recited in claim 15, wherein the at least one garment opening is a neck opening of the garment body, and wherein the air passage system comprises a neck air passage extending along the periphery of the neck opening, the entrance opening formed through the neck air passage to extend along the periphery of the neck opening.
Claim 18
Dependent Claim
54 words
A dust-free garment as recited in claim 16, wherein the air passage system further comprises a back air passage extending vertically along the center of a back of the garment body, one end of the back air passage communicated to the neck air passage and the other end in communication with the dust collector.
Claim 19
Dependent Claim
64 words
A dust-free garment as recited in claim 17, wherein the neck air passage has opposite ends facing at the front of the garment body, and wherein the air passage system comprises a pair of circumferential air passages extending from respective ends of the neck air passage through sides of the garment body to the back air passage for communicating to the back air passage.
Claim 20
Dependent Claim
73 words
A dust-free garment as recited in claim 18, wherein the garment openings further include a pair of sleeve openings, wherein the air passage system comprises a pair of sleeve opening air passages extending along peripheries of respective sleeve openings, each sleeve opening air passage having another entrance opening forxed therethrough to extend along the periphery of the sleeve opening, and wherein the sleeve opening air passages are communicated to the side air passages.
Claim 21
Dependent Claim
73 words
A dust-free garment as recited in claim 17, wherein the garment openings further include a pair of sleeve openings, wherein the air passage system comprises a pair of sleeve opening air passages extending along peripheries of respective sleeve openings, each sleeve opening air passage having another entrance opening formed therethrough to extend along the periphery of the sleeve opening, and wherein the sleeve opening air passages are communicated to the back air passages.
Claim 22
Dependent Claim
150 words
A dust-free garment as recited in claim 17, wherein the garment body comprises front body halves, having opposite vertical edges, and a zipper attached to the opposite vertical edges of the front body halves for fastening the front body halves together, the garment body having a pair of sleeve openings and a lower end for defining a waist opening, wherein the air passage system further comprises: a waist periphery air passage, extending along the periphery of the waist opening to communicate to the other end of the back air passage; a pair of sleeve opening air passages extending along peripheries of respective sleeve openings, each sleeve opening air passage having another entrance opening formed therethrough to extend along the periphery of the sleeve opening, the waist air passage communicated to the outlet and the sleeve opening air passages communicated to both the neck air passage and the waist air passage.
Claim 23
Dependent Claim
93 words
A dust-free garment as recited in claim 17, wherein the garment body is in the shape of a coverall having a waist portion and a pair of leg portions, each leg portion having a leg opening, wherein the air passage system further comprises: a waist portion air passage, extending in the waist portion to communicate to the other end of the back passage, and a pair of leg opening air passages extending along respective leg openings and commnunicating to the waist portion air passage, the waist portion air passage communicated to the outlet.
Claim 24
Dependent Claim
38 words
A dust-free garment as recited in claim 16, wherein the neck opening comprises a stand-up collar having a sufficient height such that dust from a user's head is sucked into the entrance opening of the neck air passage.
Claim 25
Dependent Claim
67 words
A dust-free garment as recited in claim 16, wherein the dust collector is a portable dust collector which communicates with the air passage system through the outlet and may be attached to a user, the dust collector comprising a suction pump for sucking air from the outlet, a filter for filtering the sucked air and electric power supply means for supplying electric power to the suction pump.
Claim 26
Dependent Claim
19 words
A dust-free garment as recited in claim 1, wherein said garment body includes a neck opening and sleeve openings.
Claim 27
Dependent Claim
25 words
A dust-free garment as recited in claim 1, wherein said negative pressure at said air entrance means results from suction exerted from said dust collector.
References Cited (Backward Citations)
FR1266314A
Cited
US3529594A
Cited
US4055173A
Cited
US4019508A
Cited
US4230114A
Cited
US4248218A
Cited
US4223669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |