Patent US3174805A successfully refreshed from Google Patents.
US3174805A
Expired / Lapsed
US
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Pneumatic feeders
Assignee: Vokes Ltd
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Filing: 1962-10-11
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Granted: 1965-03-23
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Expires: 1982-10-11
Abstract
No abstract record available.
Inventors
- 👤 Noel R F Mortimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:26
CPC Classifications
D; D01; D01G; D01G23/00; D01G23/02; B; B65; B65G; B65G53/00; B65G53/34; B65G53/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN AUTOMATIC FEED APPARATUS FOR LIGHT AND LOOSE SUBSTANCES SUCH AS TOBACCO, COMPRISING A BULK SUPPLY HOPPER CONNECTED BY A PIPE SYSTEM TO A NUMBER OF DISCHARGERS FOR MACHINES UTILIZING SUCH SUBSTANCE, MEANS FOR FEEDING SUBSTANCE FROM SAID HOPPER TO SAID PIPE SYSTEM, AND AN ELECTRIC CONTROL CIRCUIT, SAID CONTROL CIRCUIT INCLUDING A DEMAND SENSING DEVICE ASSOCIATED WITH EACH DISCHARGER FOR SIGNALING ORIGINATION AND SATISFACTION OF DEMAND THEREFROM, MEANS FOR APPLYING SUCTION IN SAID PIPE SYSTEM TO ONE DISCHARGER DURING THE DEMAND PERIOD SIGNALED BY THE SENSING DEVICE ASSOCIATED THEREWITH, MEANS SENSITIVE TO A BLOCKAGE IN SAID PIPE SYSTEM, AND MEANS OPERATIVE TO MAINTAIN A PULSED PATTERN OF SUCTION IN THE PIPE SYSTEM UNTIL SUCH BLOCKAGE IS CLEARED.
Claim 2
Dependent Claim
118 words
AN AUTOMATIC FEED APPARATUS FOR LIGHT AND LOOSE SUBSTANCES SUCH AS TOBACCO, COMPRISING A BULK SUPPLY HOPPER CONNECTED BY A PIPE SYSTEM TO A NUMBER OF DISCHARGERS FOR MACHINES UTILIZING SUCH SUBSTANCE, MEANS FOR FEEDING SUBSTANCE FROM SAID HOPPER TO SAID PIPE SYSTEM, AND AN ELECTRIC CONTROL CIRCUIT, SAID CONTROL CIRCUIT INCLUDING A DEMAND SENSING DEVICE ASSOCIATED WITH EACH DISCHARGER FOR SIGNALING ORIGINATION AND SATISFACTION OF DEMAND THEREFROM, MEANS FOR APPLYING SUCTION IN SAID PIPE SYSTEM TO ONE DISCHARGER DURING THE DEMAND PERIOD SIGNALED BY THE SENSING DEVICE ASSOCIATED THEREWITH, MEANS SENSITIVE TO A BLOCKAGE IN SAID PIPE SYSTEM, AND MEANS OPERATIVE TO MAINTAIN A PULSED PATTERN OF SUCTION IN THE PIPE SYSTEM UNTIL SUCH BLOCKAGE IS CLEARED.
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |