US3667461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable syringe
Assignee: Individual
•
Filing: 1970-12-07
•
Granted: 1972-06-06
•
Expires: 1990-12-07
Abstract
Abstract A spray nozzle has spray openings at one end and a flange at its other end, and a bag has folded or pleated portions of its thin plastic wall at the mouth of the bag or around a hole in said wall which has a thickness of the order of from 0.00125 to 0.005 of an inch. Said pleated portions are secured to said flange with a liquid-tight connection by a clamping ring which is outside the bag, grips said pleated portions between itself and said flange and by said snap ring or screw action is quickly attachable to and detachable from said flange which is inside the bag, so that the syringe can be compactly packaged, easily assembled for use and discarded after one use.
Inventors
- 👤 Paul A Zamarra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:09
CPC Classifications
A; A61; A61M; A61M3/00; A61M3/02; A61M3/0233; A61M3/0254; A61M3/0262
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A disposable syringe comprising a spray tube having spray openings at one end and an external flange at the other end, and a bag having flexible foldable and collapsible walls of a thickness of the order 0.00125 to 0.005 of an inch which form a mouth substantially larger in diameter than said flange, and a liquid-tight connection between said bag and said spray tube including said flange and a clamping ring outside said flange having coacting portions separably connecting the flange and clamping ring together and wherein the portions of said bag around said mouth are gathered and pleated over and in encircling relation to said flange, said flange is disposed inside the bag, and said pleated portions extend and are compressed and clamped between said coacting portions of said clamping ring and said flange.
Claim 2
Dependent Claim
135 words
A disposable syringe comprising a spray tube having spray openings at one end and an external flange at the other end, and a bag having flexible foldable and collapsible walls of a thickness of the order 0.00125 to 0.005 of an inch which form a mouth substantially larger in diameter than said flange, and a liquid-tight connection between said bag and said spray tube including said flange and a clamping ring outside said flange having coacting portions separably connecting the flange and clamping ring together and wherein the portions of said bag around said mouth are gathered and pleated over and in encircling relation to said flange, said flange is disposed inside the bag, and said pleated portions extend and are compressed and clamped between said coacting portions of said clamping ring and said flange.
Claim 3
Dependent Claim
56 words
A disposable syringe as defined in claim 1 wherein said coacting portions of said flange and said clamping ring comprise an exterior ridge on the flange and an interior ridge on the clamping ring adapted to engage said ridge on the flange and cause the pleated portions of the bag to be clamped between said ridges.
Claim 4
Dependent Claim
42 words
A disposable syringe, defined in claim 1 wherein said clamping ring has a resilient perimetral skirt formed with an inwardly projecting bead and yieldably snappable over and interlocking with sad flange with said pleated portions clamped between said flange and said ring.
Claim 5
Dependent Claim
176 words
A disposable syringe as defined in claim 1 wherein said flange has a shoulder facing toward the closed end of the tube, and said flange also has between the end of the tube and said shoulder two oppositely facing circular beveled surfaces which meet in a ridge, and said clamping ring has a body formed with a central opening having a diameter less than said shoulder and providing a clearance for the spray tube and the pleated portions of the bag, and said body also has a resilient perimetral skirt having an inwardly projecting bead which comprises two circular oppositely facing beveled surfaces which meet in a ridge the diameter of which is less than the diameter of the ridge on said flange of the nozzle, said bead on the clamping ring being adapted to snap over said flange and to cause the pleated portions of the bag to be clamped between said beveled surfaces of the flange and the clamping ring and between the body of the clamping ring and said shoulder of the flange.
Claim 6
Dependent Claim
73 words
A disposable syringe as defined in claim 1 wherein said portions of the bag around said mouth are gathered and pleated through and over and in encircling relation to said clamping ring into a position between said clamping ring and said flange, and said flange and said clamping ring have coactive threads for compressing and clamping said pleated portiOns between said flange and said ring and separably connecting said ring to said flange.
References Cited (Backward Citations)
US2604222A
Cited
US2859891A
Cited
US3075666A
Cited
US3204855A
Cited
US3474788A
Cited
US3471050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |