US5080092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective mask
Assignee: SGE GENERALE ELASTOMERI SpA A CORP OF ITALY Soc
•
Filing: 1990-02-09
•
Granted: 1992-01-14
•
Expires: 2010-02-09
Abstract
Abstract The protective mask (1) comprises essentially a face-shield (2) covering the user's face, made by rigid, resilient and transparent material and rimmed by a bellows seal; the belts (4), the operational means interfacing to the outside world, the filters, the ocular surfaces (12) and the other elements with which the mask is provided are fitted to the rigid structure of the face-shield (2) which does not transmit the possible deformations due to the weight of the means to the seal (11); said seal (11) provided only the necessary tightness with high comfort allowing the continuous use of the mask even during many consecutive days and nights (see FIG. 3).
Inventors
- 👤 Giovanni M. Tenna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:21
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
329 words
A protective mask comprising: an outer one-piece face shield having a front wall adapted to overlie the wearer's face and a peripheral edge which when the mask is secured to the wearer's head fits over the forehead and cheeks and under the chin of the wearer and extends rearwardly, said face shield being formed of rigid material at least an ocular portion of which is transparent for providing the wearer a wide field of view; means for resiliently sealing said face shield to the face of the wearer comprising a unitary structure in the form of an annular development having an outer edge the contour of which corresponds to the contour of the peripheral edge of said face shield and an inner edge, wherein the outer edge of said face sealing structure is detachably secured to said face shield with a peripheral hoop cooperatively with a step formed on said face shield along the peripheral edge, said structure having a channel at said outer edge in which the peripheral edge of said face shield is received for sealing said face shield to said sealing means, an annular-shaped sealing strip surrounding the inner edge, and compressible bellows means interposed between said channel and said face sealing strip for resiliently adjusting the tightness of the seal between the face sealing strip and the face of the wearer; and means for securing said face shield to the head of the wearer comprising a plurality of elastic belts each secured at one end to said face shield and interconnected at the other end and arranged to fit over the back of the head of the wearer for supporting the load of said face shield and any attachments thereon without affecting said face sealing means other than to comfortably maintain the tightness of the seal between the face sealing strip and the face of the wearer, and wherein said one end of said belts are attached to said peripheral hoop at spaced locations therearound.
Claim 2
Dependent Claim
329 words
A protective mask comprising: an outer one-piece face shield having a front wall adapted to overlie the wearer's face and a peripheral edge which when the mask is secured to the wearer's head fits over the forehead and cheeks and under the chin of the wearer and extends rearwardly, said face shield being formed of rigid material at least an ocular portion of which is transparent for providing the wearer a wide field of view; means for resiliently sealing said face shield to the face of the wearer comprising a unitary structure in the form of an annular development having an outer edge the contour of which corresponds to the contour of the peripheral edge of said face shield and an inner edge, wherein the outer edge of said face sealing structure is detachably secured to said face shield with a peripheral hoop cooperatively with a step formed on said face shield along the peripheral edge, said structure having a channel at said outer edge in which the peripheral edge of said face shield is received for sealing said face shield to said sealing means, an annular-shaped sealing strip surrounding the inner edge, and compressible bellows means interposed between said channel and said face sealing strip for resiliently adjusting the tightness of the seal between the face sealing strip and the face of the wearer; and means for securing said face shield to the head of the wearer comprising a plurality of elastic belts each secured at one end to said face shield and interconnected at the other end and arranged to fit over the back of the head of the wearer for supporting the load of said face shield and any attachments thereon without affecting said face sealing means other than to comfortably maintain the tightness of the seal between the face sealing strip and the face of the wearer, and wherein said one end of said belts are attached to said peripheral hoop at spaced locations therearound.
Claim 3
Dependent Claim
73 words
A protective mask according to claim 1, wherein said bellows means comprises first and second concentric annular-shaped baffles joined together at respective first edges along a hinge line and which diverge to form an angle therebetween having concavity toward said face shield, and wherein said first baffle is integrally joined along a second edge to a portion of said structure which forms said channel and said second baffle comprises said face sealing strip.
Claim 4
Dependent Claim
38 words
A protective mask according to claim 1 or claim 2, wherein a portion of said second annular-shaped baffle extends toward said face shield to form an integral chin latch arranged to fit under the chin of the wearer.
Claim 5
Dependent Claim
15 words
A protective mask according to claim 1, wherein said belts are individually adjustable in length.
Claim 6
Dependent Claim
69 words
A protective mask according to claim 1, wherein said mask further comprises: a small inner oronasal mask having a tubular connecting portion supported in and extending through an opening in said face shield adapted to be connected to a respirator for inhaling and exhaling therethrough, said oronasal mask being formed of surgical grade silicone rubber and of a size to overlie the nose, mouth and chin of the wearer.
Claim 7
Dependent Claim
123 words
A protective mask according to claim 1, wherein said unitary structure for sealing said face shield to the face of the wearer is formed of anti-allergic rubber and comprises in order from said outer edge (a) outer and inner spaced, substantially parallel flaps joined together and forming a U-shaped channel in which the peripheral edge of the face shield is received; (b) a first annular-shaped baffle joined at a first edge to said inner flap along a first hinge line and extending inwardly therefrom; and (c) a second annular-shaped baffle hingedly connected to a second edge of said first baffle along a second hinge line and arranged to form an angle between said first and second baffle having concavity toward said face shield.
References Cited (Backward Citations)
US1762695A
Cited
US1710160A
Cited
US1975797A
Cited
US2038267A
Cited
GB540757A
Cited
US2326650A
Cited
DE748021C
Cited
US2444417A
Cited
US2974665A
Cited
US2910062A
Cited
FR1535622A
Cited
US3540442A
Cited
US4069516A
Cited
US4449524A
Cited
US4440163A
Cited
US4677976A
Cited
US4595003A
Cited
US4616647A
Cited
US4905683A
Cited
US4702243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |