US3710982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural source dispenser with interconnected discharge volume varying means
Assignee: Individual
•
Filing: 1971-09-07
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Granted: 1973-01-16
•
Expires: 1991-09-07
Abstract
Abstract A liquid metering device comprises a driving cylinder operating the stem of a piston slidable in a first metering cylinder. The stem has a rack which is connected through a train of wheel-works to a further rack on a stem of a piston slidable in a second metering cylinder.
Inventors
- 👤 A Ferrari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:01
CPC Classifications
G; G05; G05D; G05D11/00; B; B01; B01F; B01F35/00; B01F35/80; B01F35/88; B01F35/882; B01F35/8822
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
87 words
A metering device for liquids to be mixed, particularly for polyurethane article producing apparatus, comprising: a reciprocating motor; first rack means drivingly connected with said reciprocating motor; a piston connected with said first rack means; a first metering cylinder, said piston being slidably mounted therein; a gearing train; second rack means, said gearing train drivingly connecting said first rack means with said second rack means; a piston connected with said second rack means; a second metering cylinder, said piston being slidably mounted within said second metering cylinder.
Claim 2
Dependent Claim
87 words
A metering device for liquids to be mixed, particularly for polyurethane article producing apparatus, comprising: a reciprocating motor; first rack means drivingly connected with said reciprocating motor; a piston connected with said first rack means; a first metering cylinder, said piston being slidably mounted therein; a gearing train; second rack means, said gearing train drivingly connecting said first rack means with said second rack means; a piston connected with said second rack means; a second metering cylinder, said piston being slidably mounted within said second metering cylinder.
Claim 3
Dependent Claim
16 words
A metering device according to claim 1, wherein the gearing train is a gear reduction unit.
Claim 4
Dependent Claim
16 words
A metering device according to claim 1, wherein the gearing train is a gear multiplier unit.
Claim 5
Dependent Claim
26 words
A metering device according to claim 1, wherein at least a portion of the gearing train is supported by slide means blockably mounted in guide means.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |