Patent US3820716A successfully refreshed from Google Patents.
US3083508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibratory sanding tool
Assignee: WELLER TOOL CORP
•
Filing: 1962-05-09
•
Granted: 1963-04-02
•
Expires: 1982-05-09
Abstract
No abstract record available.
Inventors
- 👤 Donald R Fegley
- 👤 Alden J Brassaw
- 👤 Carl E Weller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:54
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4063; A47L11/4069; A47L11/02; A47L11/10; A47L11/12; B; B24; B24B; B24B23/00; B24B23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A VIBRATORY ELECTROMAGNETIC TOOL FOR SANDING, POLISHING AND THE LIKE COMPRISING A CASING, A RECIPROCATIVE PLATEN SUPPORTED BELOW SAID CASING ADAPTED TO SUPPORT A SURFACE TREATING SHEET, AN ALTERNATING CURRENT ELECTROMAGNET FOR RECIPROCATING SAID PLATEN INCLUDING A CORE HAVING A PAIR OF POLE FACES AND AN ELECTROMAGNET COIL ADAPTED TO BE ENERGIZED BY ALTERNATING CURRENT ELECTRICAL ENERGY, ARMATURE MEANS PIVOTALLY MOUNTED FOR SWINGING MOVEMENT TOWARD AND AWAY FROM SAID CORE UPON OPERATION OF THE ELECTROMAGNET, SAID ARMATURE MEANS INCLUDING LEVER MEANS PIVOTALLY SUPPORTED AT A FIXED LOCATION ADJACENT ITS UPPER END IN SAID CASING AT A POINT SPACED ABOVE SAID ELECTROMAGNET CORE, MEANS COUPLING SAID LEVER MEANS TO SAID PLATEN TO RECIPROCATE SAID PLATEN RESPONSIVE TO VARIATIONS IN THE MAGNETIC FLUX IN SAID CORE, AND FAN MEANS MOUNTED ON SAID LEVER MEANS RESONANTLY RESPONSIVE TO VIBRATIONS OF SAID LEVER MEANS DURING OPERATION OF THE TOOL FOR INDUCING FORCED AIR CIRCULATION WITHIN SAID CASING ABOUT THE COIL OF SAID ELECTROMAGNET.
Claim 2
Dependent Claim
159 words
A VIBRATORY ELECTROMAGNETIC TOOL FOR SANDING, POLISHING AND THE LIKE COMPRISING A CASING, A RECIPROCATIVE PLATEN SUPPORTED BELOW SAID CASING ADAPTED TO SUPPORT A SURFACE TREATING SHEET, AN ALTERNATING CURRENT ELECTROMAGNET FOR RECIPROCATING SAID PLATEN INCLUDING A CORE HAVING A PAIR OF POLE FACES AND AN ELECTROMAGNET COIL ADAPTED TO BE ENERGIZED BY ALTERNATING CURRENT ELECTRICAL ENERGY, ARMATURE MEANS PIVOTALLY MOUNTED FOR SWINGING MOVEMENT TOWARD AND AWAY FROM SAID CORE UPON OPERATION OF THE ELECTROMAGNET, SAID ARMATURE MEANS INCLUDING LEVER MEANS PIVOTALLY SUPPORTED AT A FIXED LOCATION ADJACENT ITS UPPER END IN SAID CASING AT A POINT SPACED ABOVE SAID ELECTROMAGNET CORE, MEANS COUPLING SAID LEVER MEANS TO SAID PLATEN TO RECIPROCATE SAID PLATEN RESPONSIVE TO VARIATIONS IN THE MAGNETIC FLUX IN SAID CORE, AND FAN MEANS MOUNTED ON SAID LEVER MEANS RESONANTLY RESPONSIVE TO VIBRATIONS OF SAID LEVER MEANS DURING OPERATION OF THE TOOL FOR INDUCING FORCED AIR CIRCULATION WITHIN SAID CASING ABOUT THE COIL OF SAID ELECTROMAGNET.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |