US3749284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syringe
Assignee: Individual
•
Filing: 1971-02-08
•
Granted: 1973-07-31
•
Expires: 1991-02-08
Abstract
Abstract A syringe according to this invention comprises a body having a bore in which a plunger is reciprocably mounted. A thumbpiece is attached to the plunger and calibrator means is mounted to the thumbpiece to reciprocate with the plunger. Means mounted to said body cooperates with the calibrator means to enable determination of the volume of fluid in the bore. Preferably, and according to one feature of the syringe, the plunger is threadably assembled to said thumbpiece to permit adjustment of the relative position of said plunger with respect to said calibrator means. Stop means may be positioned so that repeated deliveries of the same quantity of fluids can be made.
Inventors
- 👤 G Kloehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:09
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/31565; A61M5/3159; A61M5/31591; A61M5/31525; A61M5/31531; A61M5/31566; A61M5/31573
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
290 words
A syring comprising: a body having an internal cylindrical sidewall defining a first bore extending axially through the body, the body having a pair of ends; a first housing mounted to the body at one of said ends; a needle in said first housing having an end which abuts the respective one of the ends of the body and having a passage therethrough of lesser diameter than the bore in the body, said passage and bore being coaxial; a plunger slidably fitted in said bore and in fluid-sealing fitting relationship with the sidewall of the said bore, and being adapted to bear against the said end of the needle in one axial position of the plunger; a second housing mounted to the other end of the body, the plunger passing through said second housing; an aperture through said second housing; a thumbpiece threadedly attached to said plunger, whereby the axial position of the thumbpiece can be adjusted relative to the plunger; a calibrator strip rigidly attached to the thumbpiece and passing through the aperture in the second housing, whereby to be axially movable with the plunger and to key the thumbpiece against rotation relative to the body, whereby the relative axial position of the calibrator strip and of the plunger can be adjusted by rotating the plunger; and stop means adjustably mounted to said body so as to be adjustably positionable axially along the same, said stop means including a reciprocable plunger adapted in one position to be abutted by the end of the calibrator strip to establish an uniquE axial position of the plunger, and to be movable out of the path of the calibrator strip to permit the calibrator strip to pass beyond the said last-named reciprocable plunger.
Claim 2
Dependent Claim
290 words
A syring comprising: a body having an internal cylindrical sidewall defining a first bore extending axially through the body, the body having a pair of ends; a first housing mounted to the body at one of said ends; a needle in said first housing having an end which abuts the respective one of the ends of the body and having a passage therethrough of lesser diameter than the bore in the body, said passage and bore being coaxial; a plunger slidably fitted in said bore and in fluid-sealing fitting relationship with the sidewall of the said bore, and being adapted to bear against the said end of the needle in one axial position of the plunger; a second housing mounted to the other end of the body, the plunger passing through said second housing; an aperture through said second housing; a thumbpiece threadedly attached to said plunger, whereby the axial position of the thumbpiece can be adjusted relative to the plunger; a calibrator strip rigidly attached to the thumbpiece and passing through the aperture in the second housing, whereby to be axially movable with the plunger and to key the thumbpiece against rotation relative to the body, whereby the relative axial position of the calibrator strip and of the plunger can be adjusted by rotating the plunger; and stop means adjustably mounted to said body so as to be adjustably positionable axially along the same, said stop means including a reciprocable plunger adapted in one position to be abutted by the end of the calibrator strip to establish an uniquE axial position of the plunger, and to be movable out of the path of the calibrator strip to permit the calibrator strip to pass beyond the said last-named reciprocable plunger.
Claim 3
Dependent Claim
37 words
A syringe according to claim 1 in which the first-named plunger carries torque-tool engagement means whereby to be engageable by a torque-tool to turn the first-named plunger to adjust its axial position relative to the calibrator strip.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |