US3332869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle tapering apparatus
Assignee: Hamilton Co Inc
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Filing: 1964-10-05
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Granted: 1967-07-25
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 John H Bent
- 👤 Ronald G Coss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:20
CPC Classifications
B; B23; B23H; B23H9/00; B23H9/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
146 words
IN APPARATUS FOR FORMING TAPERS ON A NEEDLE OR THE LIKE: (A) A TANK FOR AN ELECTROLYTIC SOLUTION; (B) NEEDLE HOLDING MEANS FOR HOLDING A NEEDLE; (C) MEANS, INCLUDING A CAM, FOR RAISING AND LOWERING SAID NEEDLE HOLDER RELATIVE TO SAID TANK FOR IMMERSING LOWER END PORTION OF SAID NEEDLE HELD BY SAID NEEDLE HOLDING MEANS INTO AND OUT OF AN ELECTROLYTIC SOLUTION IN SAID TANK; (D) MEANS FOR ROTATING SAID CAM AT A PREDETERMINED SPEED; (E) AND MEANS SYNCHRONIZED WITH SAID CAM FOR ALLOWING THE FLOW OF THE CURRENT FOR ELECTROETCHING THE NEEDLES WHEN SAID NEEDLES ARE IMMERSED IN SAID SOLUTION TO A FIRST PREDETERMINED POINT, AND CONTINUING SAID CURRENT FLOW FROM THAT FIRST POINT TO A SECOND PREDETERMINED POINT OF DEEPER IMMERSION AND RETRACTION OF THE NEEDLES TO SAID FIRST PREDETERMINED POINT, AND INTERRUPTING SAID CURRENT FLOW AT SAID FIRST POINT DURING SAID RETRACTION.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |