Patent US2982133A successfully refreshed from Google Patents.
US3237485A
Expired / Lapsed
US
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Method of tap manufacture
Assignee: Balax Inc
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Filing: 1962-04-27
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Granted: 1966-03-01
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 John M Van Vleet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:06
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/28; B23P15/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD OF MAKING A TAP BODY HAVING TEETH WITH LIKE CRESTS OF PROGRESSIVELY VARYING RADIUS IN A LEAD SECTION AND SUBSTANTIALLY CONSTANT RADIUS IN A BODY SECTION, SUCH METHOD CONSISTING IN MOVING A MALE FORMING TOOL INTO THE LEAD SECTION OF THE TAP BODY WHILE EFFECTING RELATIVE ROTATIVE AND AXIAL MOVEMENT BETWEEN THE TOOL AND THE BODY UPON LINES CORRESPONDING TO THE SPACES BETWEEN TEETH TO BE FORMED ON THE BODY, THEREBY TO EFFECT PERIPHERAL AND PROGRESSIVELY VARYING PENETRATION THEREOF ON A RADIUS WHICH IS AXIALLY OFFSET FROM A RADIUS WHICH IS MIDWAY BETWEEN THE CRESTS OF SUCCESSIVE TEETH AS MEASURED AXIALLY, THE OFFSET BEING SUCH THAT THE CRESTS OF SUCCESSIVE TEETH IN THE LEAD SECTION ARE EXACTLY ON PITCH WITH THE CRESTS OF TEETH IN THE BODY SECTION NOTWITHSTANDING THEIR VARIATION IN RADIUS.
Claim 2
Independent Claim
135 words
A METHOD OF MAKING A TAP BODY HAVING TEETH WITH LIKE CRESTS OF PROGRESSIVELY VARYING RADIUS IN A LEAD SECTION AND SUBSTANTIALLY CONSTANT RADIUS IN A BODY SECTION, SUCH METHOD CONSISTING IN MOVING A MALE FORMING TOOL INTO THE LEAD SECTION OF THE TAP BODY WHILE EFFECTING RELATIVE ROTATIVE AND AXIAL MOVEMENT BETWEEN THE TOOL AND THE BODY UPON LINES CORRESPONDING TO THE SPACES BETWEEN TEETH TO BE FORMED ON THE BODY, THEREBY TO EFFECT PERIPHERAL AND PROGRESSIVELY VARYING PENETRATION THEREOF ON A RADIUS WHICH IS AXIALLY OFFSET FROM A RADIUS WHICH IS MIDWAY BETWEEN THE CRESTS OF SUCCESSIVE TEETH AS MEASURED AXIALLY, THE OFFSET BEING SUCH THAT THE CRESTS OF SUCCESSIVE TEETH IN THE LEAD SECTION ARE EXACTLY ON PITCH WITH THE CRESTS OF TEETH IN THE BODY SECTION NOTWITHSTANDING THEIR VARIATION IN RADIUS.
References Cited (Backward Citations)
US1958105A
Cited
US2288574A
Cited
US2330099A
Cited
US2390950A
Cited
US2459910A
Cited
US2656740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |