Patent US3675486A successfully refreshed from Google Patents.
US3675486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument with replaceable tube
Assignee: Propper Manufacturing Co Inc
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Filing: 1970-04-16
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Granted: 1972-07-11
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Expires: 1990-04-16
Abstract
Abstract A sphygmomanometer having a replaceable measuring tube which has its lower end received in a seat and its upper end received in a cap which presses the measuring tube into the seat. The cap is spring-biased into engagement with the top of the measuring tube and the cap may be raised by means of a normally hidden lever to release the measuring tube for removal and replacement.
Inventors
- 👤 Irving A Speelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:37
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/023; G; G01; G01L; G01L7/00; G01L7/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
An instrument comprising a frame, a replaceable tube having opposite ends, a first seat mounted on said frame and having one end of said tube positioned therein, a cup having the other end of said tube positioned therein, a cap means having said cup moveably mounted thereon, connecting means connected to said cap means and said frame for removably securing said cap means in assembled relation with said frame, and cup-operating means carried solely by said cap means for biasing said cup into engagement with said other end of said tube and for moving said cup out of engagement with said other end of said tube.
Claim 2
Dependent Claim
106 words
An instrument comprising a frame, a replaceable tube having opposite ends, a first seat mounted on said frame and having one end of said tube positioned therein, a cup having the other end of said tube positioned therein, a cap means having said cup moveably mounted thereon, connecting means connected to said cap means and said frame for removably securing said cap means in assembled relation with said frame, and cup-operating means carried solely by said cap means for biasing said cup into engagement with said other end of said tube and for moving said cup out of engagement with said other end of said tube.
Claim 3
Dependent Claim
86 words
An instrument as claimed in claim 1 wherein said cup-operating means includes a bell crank pivotally mounted intermediate its ends on said cap means, one end of said bell crank being in operative engagement with said cup for moveably mounting said cup with respect to said cap means and spring-biasing means acting between said bell crank and said cap mEans for biasing said cup in one direction while permitting said cup to be moved against the biasing force of said spring-biasing means in an opposite direction.
Claim 4
Dependent Claim
36 words
An instrument as claimed in claim 2 wherein said one end of said bell crank is bifurcated to define a pair of fingers and said cup is provided with bearing surfaces for engagement by said fingers.
Claim 5
Dependent Claim
42 words
An instrument as claimed in claim 3 wherein said cup-operating means includes an operating finger pivoted to said bell crank and rotatable between an operative position projecting outwardly of said cap means and an inoperative position substantially withdrawn within said cap means.
Claim 6
Dependent Claim
44 words
An instrument as claimed in claim 4 wherein the pivot of said operating finger to said bell crank is located in over-center relationship with respect to said operating finger, whereby said operating finger will be normally biased by gravity into said substantially withdrawn position.
Claim 7
Dependent Claim
109 words
An instrument as claimed in claim 5 wherein said cap means has a top surface and a slot extends through said cap means from the top surface thereof, said operating finger being positioned substantially within said slot, said operating finger having a top surface when in the substantially withdrawn position substantially flush with the top surface of said cap means, said operating finger having a forward end and said top surface of said cap means having a depression proximate said forward end of said operating finger whereby to permit said forward end to be physically grasped for pivoting thereof when said operating finger is in said substantially withdrawn position.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |