Patent US3135427A successfully refreshed from Google Patents.
US3135427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging hopper for balances for loose bulk material
Assignee: Individual
•
Filing: 1961-01-04
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Granted: 1964-06-02
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Expires: 1981-01-04
Abstract
No abstract record available.
Inventors
- 👤 Siegburg Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:45
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65B; B65B1/00; B65B1/30; B65B1/32; B65B1/34; G; G01; G01G; G01G21/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A CHARGING HOPPER FOR BALANCES FOR THE AUTOMATIC WEIGHING OF FINE-GRAINED LOOSE BULK MATERIAL, ESPECIALLY AUTOMATIC SACKING AND RECORDING BALANCES, COMPRISING A CLOSURE FLAP FOR THE HOPPER DISCHARGE REGULATING THE COARSE WEIGHING, A FINE-WEIGHING OPENING IN SAID CLOSURE FLAP, HINGED WALL MEANS FORMING AT LEAST PART OF A WALL OF SAID HOPPER AND ARRANGED FOR PIVOTAL MOVEMENT INTO THE DISCHARGE OF THE HOPPER SO AS TO CLOSE SAID FINE-WEIGHING OPENING, AND LOADING MEANS HOLDING SAID HINGED WALL MEANS TO OPEN SAID FINE-WEIGHING OPENING ONLY WHEN THE HOPPER CONTAINS A PREDETERMINED AMOUNT OF SAID BULK MATERIAL.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |