Patent US3147535A successfully refreshed from Google Patents.
US3147535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary gear-shaped tool for perfecting gears and method and means for using the same
Assignee: Individual
•
Filing: 1960-11-25
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Granted: 1964-09-08
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Expires: 1980-11-25
Abstract
No abstract record available.
Inventors
- 👤 Wildhaber Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:20
CPC Classifications
B; B23; B23F; B23F7/00; B23F19/00; B23F19/06; B23F19/063; B23F21/00; B23F21/28; B23F21/286; B23F23/00; B23F23/08; B23F23/085; Y; Y10; Y10T; Y10T407/00; Y10T407/17; Y10T407/1735; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/10477; Y10T409/105088; Y10T409/105247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A ROTARY GEAR-SHAPED TOOL FOR PERFECTING A GEAR BY ROTATION IN MESH WITH THE GEAR IN THE MANNER OF AN EXTERNAL GEAR AND AN INTERNAL GEAR MESHING WITH EACH OTHER AND WITH THEIR AXES LYING IN A COMMON PLANE, WHEREBY A ROLLING CIRCLE RIGID WITH SAID TOOL ROLLS WITHOUT SLIDING ON A CIRCLE RIGID WITH SAID GEAR, ONE OF SAID CIRCLES CONTACTING THE OTHER INTERNALLY, SAID TOOL HAVING TEETH AND TOOTH SPACES ALTERNATING WITH ONE ANOTHER AROUND ITS PERIPHERY, THE THICKNESS OF THE TEETH OF SAID TOOL AT MIDHEIGHT BEING LESS THAN THE WIDTH OF THE TOOTH SPACES OF SAID TOOL AT MIDHEIGHT AND BEING LESS THAN THE WIDTH OF THE TOOTH SPACES OF SAID GEAR, AND SAID TOOL HAVING TOOTH SIDES CONJUGATE TO THE TOOTH SIDES OF SAID GEAR, AND SAID TOOL BEING ADAPTED TO MESH WITH SAID GEAR WITH THE TEETH OF SAID TOOL DISPOSED ENTIRELY INSIDE OF SAID ROLLING CIRCLE AND AT A DISTANCE THEREFROM.
Claim 2
Dependent Claim
158 words
A ROTARY GEAR-SHAPED TOOL FOR PERFECTING A GEAR BY ROTATION IN MESH WITH THE GEAR IN THE MANNER OF AN EXTERNAL GEAR AND AN INTERNAL GEAR MESHING WITH EACH OTHER AND WITH THEIR AXES LYING IN A COMMON PLANE, WHEREBY A ROLLING CIRCLE RIGID WITH SAID TOOL ROLLS WITHOUT SLIDING ON A CIRCLE RIGID WITH SAID GEAR, ONE OF SAID CIRCLES CONTACTING THE OTHER INTERNALLY, SAID TOOL HAVING TEETH AND TOOTH SPACES ALTERNATING WITH ONE ANOTHER AROUND ITS PERIPHERY, THE THICKNESS OF THE TEETH OF SAID TOOL AT MIDHEIGHT BEING LESS THAN THE WIDTH OF THE TOOTH SPACES OF SAID TOOL AT MIDHEIGHT AND BEING LESS THAN THE WIDTH OF THE TOOTH SPACES OF SAID GEAR, AND SAID TOOL HAVING TOOTH SIDES CONJUGATE TO THE TOOTH SIDES OF SAID GEAR, AND SAID TOOL BEING ADAPTED TO MESH WITH SAID GEAR WITH THE TEETH OF SAID TOOL DISPOSED ENTIRELY INSIDE OF SAID ROLLING CIRCLE AND AT A DISTANCE THEREFROM.
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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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |