US3760503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable mixing syringe
Assignee: Dentipressions Inc
•
Filing: 1972-05-18
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Granted: 1973-09-25
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Expires: 1992-05-18
Abstract
Abstract A disposable mixing syringe especially adapted for dental use is described. It comprises a barrel for receiving one component of a mixture to be formed and terminating in a flexible nozzle having a small orifice. The opposite barrel end is open and adapted to receive a sealed removable insert package constituted of puncturable material and containing a second component of the mixture to be formed. Inserting a mixing tool through the insert allows rapid mixing of the constituents, after which a suitable plunger is provided to expel the contents through the orifice.
Inventors
- 👤 M Baskas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:24
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/71; B01F35/713; A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8802; A61B17/8805; A61B17/8825; A61C; A61C9/00; A61C9/0026; A61M; A61M3/00; A61M3/005; A61M5/00; A61M5/178; A61M5/19; B01F31/00; B01F31/44; B01F31/441; B01F33/00; B01F33/50; B01F33/501; B01F33/5011; B01F33/50112; B01F35/7137; B01F35/716; B01F35/7161; A61B17/8833; A61B2017/8838; B01F35/30; B01F35/32; B01F35/32005; B01F35/3202
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
177 words
A disposable syringe and mixing assembly comprising an elongated syringe barrel having an exiting orifice at one end and an opening at the opposite end, a first component of a mixture to be formed located directly within the syringe barrel in contact with the walls thereof, a relatively small permanently sealed insert package wholly of puncturable thin foil sheet material, a second component of the mixture to be formed located and sealed within the insert package, means including a flanged portion on the insert package and a portion depending from the flanged portion and seated within the opening at the opposite end of the syringe barrel for removably mounting the insert package thereat, said insert package being puncturable by a mixing spatula allowing mixing of the first and second components and removal of the empty package by using the flanged portion as a gripping means, and plunger means separable from the insert package and having a diameter large enough to engage the barrel walls for insertion in the syringe for expelling the mixture through the exiting orifice.
Claim 2
Dependent Claim
177 words
A disposable syringe and mixing assembly comprising an elongated syringe barrel having an exiting orifice at one end and an opening at the opposite end, a first component of a mixture to be formed located directly within the syringe barrel in contact with the walls thereof, a relatively small permanently sealed insert package wholly of puncturable thin foil sheet material, a second component of the mixture to be formed located and sealed within the insert package, means including a flanged portion on the insert package and a portion depending from the flanged portion and seated within the opening at the opposite end of the syringe barrel for removably mounting the insert package thereat, said insert package being puncturable by a mixing spatula allowing mixing of the first and second components and removal of the empty package by using the flanged portion as a gripping means, and plunger means separable from the insert package and having a diameter large enough to engage the barrel walls for insertion in the syringe for expelling the mixture through the exiting orifice.
Claim 3
Dependent Claim
24 words
A disposable syringe and mixing assembly as claimed in claim 1 wherein the exiting orifice is small and the opposite end opening is larger.
Claim 4
Dependent Claim
31 words
A syringe and mixing assembly as claimed in claim 2 wherein the opposite end of the barrel has a flange, and the insert flange adapted to seat on the barrel flange.
Claim 5
Dependent Claim
32 words
A syringe and mixing assembly as set forth in claim 3 wherein the insert portion which depends from the flange and seats within the barrel opening has the shape of a bubble.
Claim 6
Dependent Claim
24 words
A syringe and mixing assembly as set forth in claim 4 wherein the insert comprises two sheets of puncturable material heat-sealed at their flanges.
Claim 7
Dependent Claim
32 words
A syringe and mixing assembly as set forth in claim 5 wherein the bubble portion of the insert has a relatively small height compared with the overall height of the syringe barrel.
Claim 8
Dependent Claim
27 words
A disposable syringe and mixing assembly as claimed in claim 1 wherein the first and second components are both liquids having colors that differ from one another.
References Cited (Backward Citations)
US2754590A
Cited
US2869543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |