US3103675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broaching method and apparatus for forming an undercut slot
Assignee: Individual
•
Filing: 1960-03-21
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Granted: 1963-09-17
•
Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 Rudolph M Vaughn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:11
CPC Classifications
B; B23; B23G; B23G9/00; B23G9/001; B23G9/002; B23D; B23D43/00; B23D43/06; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1952; Y10T407/1956; Y10T407/1962; Y10T409/00; Y10T409/40; Y10T409/400175; Y10T409/4028; Y10T409/403325
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A BROACHING APPARATUS FOR FORMING UNDERCUT SLOTS IN SCREW HEADS COMPRISING, IN COMBINATION: A CONVEYOR MEANS FOR SUCCESSIVELY CONVEYING SAID SCREW HEADS WITH THEIR LONGITUDINAL AXES EXTENDING IN VERTICAL DIRECTIONS TO FIRST, SECOND, AND THIRD SUCCESSIVE POSITIONS; A FIRST BROACHING WHEEL MOUNTED FOR ROTATION ABOUT A FIRST HORIZONTAL AXIS ADJACENT TO SAID FIRST POSITION, SAID FIRST BROACHING WHEEL HAVING PERIPHERAL BROACHING TEETH OF DEPTH INCREASING ABOUT THE PERIPHERY OF SAID WHEEL FROM ZERO TO A VALUE EQUAL TO THE DESIRED DEPTH OF SAID SLOTS; A SECOND BROACHING WHEEL MOUNTED FOR ROTATION ABOUT A SECOND HORIZONTAL AXIS ADJACENT TO SAID SECOND POSITION, SAID SECOND BROACHING WHEEL HAVING BROACHING TEETH OF WIDTH AT THEIR PERIPHERY SUCCESSIVELY INCREASING ABOUT THE PERIPHERY OF SAID WHEEL FROM A VALUE LESS THAN THE WIDTH OF SAID SLOTS TO A VALUE EQUAL TO THE WIDTH OF SAID SLOTS ADDED TO THE DESIRED UNDERCUT ON EACH SIDE OF SAID SLOTS, THE SIDES OF SAID TEETH CONVERGING IN A RADIAL INWARD DIREC-
Claim 2
Dependent Claim
163 words
A BROACHING APPARATUS FOR FORMING UNDERCUT SLOTS IN SCREW HEADS COMPRISING, IN COMBINATION: A CONVEYOR MEANS FOR SUCCESSIVELY CONVEYING SAID SCREW HEADS WITH THEIR LONGITUDINAL AXES EXTENDING IN VERTICAL DIRECTIONS TO FIRST, SECOND, AND THIRD SUCCESSIVE POSITIONS; A FIRST BROACHING WHEEL MOUNTED FOR ROTATION ABOUT A FIRST HORIZONTAL AXIS ADJACENT TO SAID FIRST POSITION, SAID FIRST BROACHING WHEEL HAVING PERIPHERAL BROACHING TEETH OF DEPTH INCREASING ABOUT THE PERIPHERY OF SAID WHEEL FROM ZERO TO A VALUE EQUAL TO THE DESIRED DEPTH OF SAID SLOTS; A SECOND BROACHING WHEEL MOUNTED FOR ROTATION ABOUT A SECOND HORIZONTAL AXIS ADJACENT TO SAID SECOND POSITION, SAID SECOND BROACHING WHEEL HAVING BROACHING TEETH OF WIDTH AT THEIR PERIPHERY SUCCESSIVELY INCREASING ABOUT THE PERIPHERY OF SAID WHEEL FROM A VALUE LESS THAN THE WIDTH OF SAID SLOTS TO A VALUE EQUAL TO THE WIDTH OF SAID SLOTS ADDED TO THE DESIRED UNDERCUT ON EACH SIDE OF SAID SLOTS, THE SIDES OF SAID TEETH CONVERGING IN A RADIAL INWARD DIREC-
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |