US4015594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording sphygmomanometer sphygpressure graph
Assignee: Individual
•
Filing: 1976-06-14
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Granted: 1977-04-05
•
Expires: 1996-06-14
Abstract
Abstract A sphygpressure graph of the aneroid gauge type including a housing, connected with a sphygmocuff, supporting a series of telescoping tubes, connected in right angular relation, and a stylus, mounted on the endmost tube, movable over a chart to scribe the blood pressures. A ratchet and pawl arrangement engaging the telescoping tubes prevents reciprocating action of pulse pressure moving the stylus in a to and fro movement transversely over a graph paper but records the pulse by longitudinally scribing a graph paper during release of pressure from the sphygmocuff.
Inventors
- 👤 Lilian Ellen Siverson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:29
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/02233; A61B5/024; A61B5/0255; G; G01; G01D; G01D9/00; G01D9/02; G01D9/10; Y; Y10; Y10S; Y10S128/00; Y10S128/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
A blood-pressure-measuring device, comprising: a blood-flow-restricting sleeve; pump means for pressurizing said sleeve; a housing secured to said sleeve, said housing having an aperture communicating with the interior of said sleeve; a right-angular tube telescopically received at one end portion within the housing aperture; a first spring normally biasing said one end portion of said right-angular tube into the aperture; ratchet means including a rack pivotally supported by said housing in overlying relation with respect to said one end portion of said right-angular tube, said rack having a series of ratchet teeth projecting toward said right-angular tube; a pawl secured to said right-angular tube and engaged by said ratchet teeth permitting telescopic movement of said right-angular tube into the housing aperture and preventing telescopic extending movement of said right-angular tube out of the housing aperture; a scribing tube having one closed end and having its open end telescopically received within the other end portion of said right-angular tube; a second spring within said scribing tube normally biasing said scribing tube into said other end portion of said right-angular tube; graph paper supported by said housing; and a stylus secured to the closed end of said scribing tube and contacting said graph paper.
Claim 2
Dependent Claim
202 words
A blood-pressure-measuring device, comprising: a blood-flow-restricting sleeve; pump means for pressurizing said sleeve; a housing secured to said sleeve, said housing having an aperture communicating with the interior of said sleeve; a right-angular tube telescopically received at one end portion within the housing aperture; a first spring normally biasing said one end portion of said right-angular tube into the aperture; ratchet means including a rack pivotally supported by said housing in overlying relation with respect to said one end portion of said right-angular tube, said rack having a series of ratchet teeth projecting toward said right-angular tube; a pawl secured to said right-angular tube and engaged by said ratchet teeth permitting telescopic movement of said right-angular tube into the housing aperture and preventing telescopic extending movement of said right-angular tube out of the housing aperture; a scribing tube having one closed end and having its open end telescopically received within the other end portion of said right-angular tube; a second spring within said scribing tube normally biasing said scribing tube into said other end portion of said right-angular tube; graph paper supported by said housing; and a stylus secured to the closed end of said scribing tube and contacting said graph paper.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |