Patent US3946736A successfully refreshed from Google Patents.
US3946736A
Expired / Lapsed
US
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Respirator assist device
Assignee: Individual
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Filing: 1974-10-18
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Granted: 1976-03-30
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Expires: 1994-10-18
Abstract
Abstract A respirator assist device intended to be connected to a hand operated vacuum pump such as disclosed in U.S. Pat. No. 3,612,722 and includes a tubular tongue depressor and sealing means encircling the lips of the user; then, upon manually closing the nose of the user, and operating the pump, a vacuum is created in the throat above an object lodged therein, causing the object to be forced back into the mouth for removal.
Inventors
- 👤 Theodore C. Neward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:59
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/24; A61B17/50
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
A respirator assist device for removal of an object lodged in the throat, said device comprising: a. a mouth covering plate having a marginal flange dimensioned to encase and seal the lips of the user; b. a pair of flat blade elements extending from the mouth covering plate; c. a pair of wall elements extending from the covering plate and joined to the balde elements to form a passageway; d. the blade elements being insertable between the palate and the tongue of the user to depress the tongue from the palate, the covering plate limiting the depth of insertion of the blade elements to prevent contact with the back of the mouth and throat; e. and means communicating with the passageway through the mouth covering plate for producing a negative pressure in the passageway thereby to produce a pressure differential across an object lodged in the throat and urge the object toward the blade elements.
Claim 2
Dependent Claim
155 words
A respirator assist device for removal of an object lodged in the throat, said device comprising: a. a mouth covering plate having a marginal flange dimensioned to encase and seal the lips of the user; b. a pair of flat blade elements extending from the mouth covering plate; c. a pair of wall elements extending from the covering plate and joined to the balde elements to form a passageway; d. the blade elements being insertable between the palate and the tongue of the user to depress the tongue from the palate, the covering plate limiting the depth of insertion of the blade elements to prevent contact with the back of the mouth and throat; e. and means communicating with the passageway through the mouth covering plate for producing a negative pressure in the passageway thereby to produce a pressure differential across an object lodged in the throat and urge the object toward the blade elements.
Claim 3
Dependent Claim
55 words
A respirator device as defined in claim 1, wherein: a. the mouth covering plate is symmetrical along the plane of the passageway midway between the blade elements whereby either blade element may engage and depress the tongue, and the mouth covering plate in either position of the blade elements is sealingly engageable with the lips.
Claim 4
Dependent Claim
21 words
A respirator device as defined in claim 1, wherein: a. the mouth covering plate, blade elements and wall elements are integral.
Claim 5
Dependent Claim
156 words
A respirator assist device for removal of an object lodged in the throat, said device comprising: a. a mouth covering plate approximating the curvature of the face of the user for surrounding the mouth and including a marginal flange having a portion fitting between the lips and the nose of the user, the marginal flange being pressible against the lips of the user to form a seal; b. an integral tubular extension centered between the marginal flange for insertion into the mouth of the user, the tubular extension including a pair of spaced essentially flat, blade elements either blade element being engageable with the tongue when the mouth covering plate is in sealing engagement with the user's face; c. and means carried by the mouth covering plate for connection to a sourse of negative pressure thereby to produce a pressure differential across an object lodged in the user's throat urging the object toward the tubular extension.
Claim 6
Dependent Claim
156 words
A respirator assist device for removal of an object lodged in the throat, said device comprising: a. a mouth covering plate approximating the curvature of the face of the user for surrounding the mouth and including a marginal flange having a portion fitting between the lips and the nose of the user, the marginal flange being pressible against the lips of the user to form a seal; b. an integral tubular extension centered between the marginal flange for insertion into the mouth of the user, the tubular extension including a pair of spaced essentially flat, blade elements either blade element being engageable with the tongue when the mouth covering plate is in sealing engagement with the user's face; c. and means carried by the mouth covering plate for connection to a sourse of negative pressure thereby to produce a pressure differential across an object lodged in the user's throat urging the object toward the tubular extension.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |