US3700215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing and dispensing device
Assignee: Hardman Inc
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Filing: 1970-10-21
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Granted: 1972-10-24
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Expires: 1990-10-21
Abstract
Abstract Each of two syringes comprises a barrel having a plunger therein and an outlet nozzle separably connected to the outlet nozzle of the other barrel in axial alinement therewith, and there is a perforated mixing tube slidable through said nozzles with each of its ends in abutting relation to one of said plungers so that fluent substances may be placed in either or both of said barrels, for example, one component of a two part reactive resin system can be placed in each of said barrels, and pumped repeatedly from each barrel into the other barrel through said perforated tube to thoroughly and rapidly mix said substances.
Inventors
- 👤 Kenneth V Hardman
- 👤 Alfred J Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/40; B01F25/45; B01F25/451; B01F25/4512; B01F25/452; B01F25/4521; B01F25/45211; B01F31/00; B01F31/44; B01F31/441; B01F33/00; B01F33/50; B01F33/501; B01F33/5011; B01F33/50112; B01F35/00; B01F35/71; B01F35/712; B01F35/716; B01F35/7161; B01F35/7163; B01F35/717; B01F35/7174; B01F35/7179; B01F35/30; B01F35/32; B01F35/32005; B01F35/3202
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
131 words
A mixing and dispensing device comprising two syringes each including a barrel having a plunger therein and an outlet nozzle separably connected to the outlet nozzle of the other barrel in axial alinement therewith, and a mixing member having a slide fit in said nozzles with one end associated with each plunger and providing for sliding of the mixing member and pumping of fluent substances in said barrels from one barrel into the other barrel simultaneously at a plurality of points along the lengths of the barrels repeatedly upon alternate reciprocation of said plungers, thereby to rapidly and thoroughly mix said substances, said mixing member being a tube having perforations in its wall through which said substances are forced as the substances are pumped from one barrel into the other barrel.
Claim 2
Dependent Claim
131 words
A mixing and dispensing device comprising two syringes each including a barrel having a plunger therein and an outlet nozzle separably connected to the outlet nozzle of the other barrel in axial alinement therewith, and a mixing member having a slide fit in said nozzles with one end associated with each plunger and providing for sliding of the mixing member and pumping of fluent substances in said barrels from one barrel into the other barrel simultaneously at a plurality of points along the lengths of the barrels repeatedly upon alternate reciprocation of said plungers, thereby to rapidly and thoroughly mix said substances, said mixing member being a tube having perforations in its wall through which said substances are forced as the substances are pumped from one barrel into the other barrel.
Claim 3
Dependent Claim
82 words
A mixing and dispensing device as defined in claim 1 wherein said perforations are spaced apart longitudinally and circumferentially of the tube and the ends of the tube are occluded by the respective plungers during the reciprocation of the plungers so that said fluent substances are forced from one barrel into the perforations in the corresponding portions of the tube and then out of the perforations in the portions of the tube in the other barrel during the reciprocation of the plungers.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |