US3269527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material feeding apparatus
Assignee: Southall and Smith Ltd
•
Filing: 1964-10-20
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Granted: 1966-08-30
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Expires: 1984-10-20
Abstract
No abstract record available.
Inventors
- 👤 Denham Derek Malcolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:17
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/06; G05D7/0605
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A MATERIAL FEEDING APPARATUS COMPRISING: (1) ROTATABLE DRIVING MEANS, (2) A ROTATABLE FEED AUGER SCREW, (3) AN ELECTROMAGNETICALLY OPERATED CLUTCH/BRAKE MECHANISM CONNECTED BETWEEN SAID DRIVING MEANS AND SAID FEED AUGER SCREW TO CONTROL DRIVE TO THE LATER, (4) AN ELECTRICAL CONTROL CIRCUIT CONNECTED TO EFFECT ELECTROMAGNETIC OPERATION OF SAID ELECTROMAGNETICALLY OPERATED CLUTCH/BRAKE MECHANISM, (5) A THREE PHASE ALTERNATING CURRENT SUPPLY, (6) THREE FULL WAVE RECTIFIER UNITS RESPECTIVELY CONNECTED TO FULL WAVE RECTIFY EACH OF THE THREE INDIVIDUAL PHASES OF SAID SUPPLY, AND (7) MEANS CONNECTING THE OUTPUTS OF SAID FULL WAVE RECTIFIERS TOGETHER TO FEED A RESULANT SUBSTANTIALLY SMOOTH DIRECT CURRENT TO ENERGIZE SAID ELECTRICAL CONTROL CIRCUIT.
Claim 2
Dependent Claim
107 words
A MATERIAL FEEDING APPARATUS COMPRISING: (1) ROTATABLE DRIVING MEANS, (2) A ROTATABLE FEED AUGER SCREW, (3) AN ELECTROMAGNETICALLY OPERATED CLUTCH/BRAKE MECHANISM CONNECTED BETWEEN SAID DRIVING MEANS AND SAID FEED AUGER SCREW TO CONTROL DRIVE TO THE LATER, (4) AN ELECTRICAL CONTROL CIRCUIT CONNECTED TO EFFECT ELECTROMAGNETIC OPERATION OF SAID ELECTROMAGNETICALLY OPERATED CLUTCH/BRAKE MECHANISM, (5) A THREE PHASE ALTERNATING CURRENT SUPPLY, (6) THREE FULL WAVE RECTIFIER UNITS RESPECTIVELY CONNECTED TO FULL WAVE RECTIFY EACH OF THE THREE INDIVIDUAL PHASES OF SAID SUPPLY, AND (7) MEANS CONNECTING THE OUTPUTS OF SAID FULL WAVE RECTIFIERS TOGETHER TO FEED A RESULANT SUBSTANTIALLY SMOOTH DIRECT CURRENT TO ENERGIZE SAID ELECTRICAL CONTROL CIRCUIT.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |