Patent US3249414A successfully refreshed from Google Patents.
US3249414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for making straight precision glass barrels or bodies for syringes
Assignee: Individual
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Filing: 1962-11-19
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Granted: 1966-05-03
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Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Clark H Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:20
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/04; C03B23/07; C03B23/073; C03B23/076
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A METHOD FOR MAKING STRAIGHT, PRECISION GLASS BARRELS FOR SYRINGES AND THE LIKE: (A) ROTATING A LENGTH OF GLASS TUBING WITH A MANDREL DISPOSED UNDER TENSION IN THE BORE THEREOF; (B) A HEAT SOFTENING SAID GLASS TUBINGWHILE ROTATING AND SHRINKING SAME ON THE TENSIONED MANDREL, (C) PRECISE STRAIGHT BORE TUBING FORMING AS A RESULT OF THE ROTATING OF SAID TUBING.
Claim 2
Dependent Claim
59 words
IN APPARATUS FOR SHRINKING GLASS TUBING AND MAKING STRAIGHT, PRECISION GLASS BARRELS: (A) A MANDREL FOR DISPOSITION WITHIN THE BORE OF A LENGTH OF GLASS TUBING; (B) SUPPORT MEANS FOR OPERABLY SUPPORTING SAID TUBING WHEN DISPOSED ON SAID MANDREL; (C) MEANS FOR TENSIONING SAID MANDREL; (D) AND MEANS FOR HEAT SOFTENING SAID TUBING AND SHRINKING SAME ONTO SAID MANDREL.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |