US3247858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for cleaning and assorting table silver and control mechanism therefor
Assignee: Individual
•
Filing: 1964-02-25
•
Granted: 1966-04-26
•
Expires: 1984-02-25
Abstract
No abstract record available.
Inventors
- 👤 Robert W Kraeft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:50
CPC Classifications
A; A47; A47L; A47L21/00; A47L21/02; Y; Y10; Y10S; Y10S209/00; Y10S209/926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A CONTROL SYSTEM FOR THE OPERATION OF SILVER CLEANSING AND ASSORTING UNITS COMPRISING (A) AN ELECTRIC DRIVE FOR ACTIVATING THE CLEANSING UNIT, (B) AN ELECTRIC DRIVE FOR THE ASSORTING UNIT, (C) A CONVEYOR BETWEEN THE UNITS, (D) AN ELECTRIC DRIVE FOR THE CONVEYOR, (E) NORMALLY OPEN CIRCUITRY CONNECTING THE SEVERAL DRIVES, AND (F) TIMING MEANS IN THE CIRCUITRY FOR ESTABLISHING WHEN THE CIRCUITRY IS CLOSED A TIMED CYCLE OF OPERATIONS INCLUDING CLEANSING OF A BATCH OF SILVER, CONVEYING THE CLEANSED SILVER BATCH TO THE ASSORTING UNIT, AND SORTING THE SILVER.
Claim 2
Dependent Claim
90 words
A CONTROL SYSTEM FOR THE OPERATION OF SILVER CLEANSING AND ASSORTING UNITS COMPRISING (A) AN ELECTRIC DRIVE FOR ACTIVATING THE CLEANSING UNIT, (B) AN ELECTRIC DRIVE FOR THE ASSORTING UNIT, (C) A CONVEYOR BETWEEN THE UNITS, (D) AN ELECTRIC DRIVE FOR THE CONVEYOR, (E) NORMALLY OPEN CIRCUITRY CONNECTING THE SEVERAL DRIVES, AND (F) TIMING MEANS IN THE CIRCUITRY FOR ESTABLISHING WHEN THE CIRCUITRY IS CLOSED A TIMED CYCLE OF OPERATIONS INCLUDING CLEANSING OF A BATCH OF SILVER, CONVEYING THE CLEANSED SILVER BATCH TO THE ASSORTING UNIT, AND SORTING THE SILVER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |