US3670720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-assisted inflation assembly for sphygmomanometers
Assignee: Individual
•
Filing: 1971-05-04
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Granted: 1972-06-20
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Expires: 1991-05-04
Abstract
Abstract In a sphygmomanometer, the improvement which comprises a tube interconnecting the air line, leading to the inflatable cuff, and the air-introducing bulb by means of an interconnecting channel, with the channel having inner diameters at its ends at least equal to the inner diameters of its connecting elements and tapering centrally to define a constricted throat, and an airintake tube disposed at right angles to the throat axis and affording air intercommunication between the throat and the exterior of the tube. The air-intake tube is further provided with a sleeve valve to selectively close off communication of the throat with the exterior of the tube.
Inventors
- 👤 Norman Panzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:45
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/0235
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
In a sphygmomanometer of the type described, the combination of an inflatable cuff, an air line leading to the inflatable cuff, a pressure indicating means in communication with said inflatable cuff, an air introducing and exhausting means and a tube secured in air-tight engagement between said air line and said air introducing and exhusting means, and provided with a channel therethrough affording intercommunication between the air line and the air introducing and exhausting means, the channel tapering intermediately of its ends to define a constricted throat, and means to provide intercommunication between the throat and the exterior of the tube thereby to allow ambient air to be drawn into said channel to increase the volume of air introduced into said cuff.
Claim 2
Dependent Claim
121 words
In a sphygmomanometer of the type described, the combination of an inflatable cuff, an air line leading to the inflatable cuff, a pressure indicating means in communication with said inflatable cuff, an air introducing and exhausting means and a tube secured in air-tight engagement between said air line and said air introducing and exhusting means, and provided with a channel therethrough affording intercommunication between the air line and the air introducing and exhausting means, the channel tapering intermediately of its ends to define a constricted throat, and means to provide intercommunication between the throat and the exterior of the tube thereby to allow ambient air to be drawn into said channel to increase the volume of air introduced into said cuff.
Claim 3
Dependent Claim
40 words
The combination as described in claim 1, the means to provide intercommunication between the throat and the exterior of the tube comprising a secondary tube opening into the throat at one end thereof and extending out of the main tube.
Claim 4
Dependent Claim
21 words
The combination as described in claim 2, the secondary tube being disposed at right angles to the axis of the throat.
Claim 5
Dependent Claim
39 words
The combination as described in claim 3, the secondary tube extending beyond the surface of the main tube and provided with means to selectively close off intercommunication of air between the throat and the exterior of the main tube.
Claim 6
Dependent Claim
54 words
The combination as described in claim 4, the means to selectively close off intercommunication comprising a plurality of bores in the wall of the secondary tube and a sleeve valve mounted on the secondary tube, the sleeve valve being frictionally slideable thereon between a position exposing the bores and a position enclosing the bores.
Claim 7
Dependent Claim
49 words
The combination as described in claim 1, the angle of convergence of the tube channel leading to the throat in the direction of the inflatable cuff being greater than the angle of divergence of the tube channel leading away from the throat in the direction of the inflatable cuff.
Claim 8
Dependent Claim
30 words
The combination as described in claim 1, the inner diameters of the tube channel at the tube ends being at least equal to the inner diameter of the air line.
Claim 9
Dependent Claim
30 words
The combination as described in claim 7, the inner diameters of the tube channel at the tube ends being at least 3 times the inner diameter of the constricted throat.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |