US3712784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for blow molding a preform in a mold with a sterile gas
Assignee: Individual
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Filing: 1971-03-26
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Granted: 1973-01-23
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Expires: 1991-03-26
Abstract
Abstract A needle is retracted into a sterilization chamber where it undergoes heating to a sterilization temperature while a sterile gas is passed through the needle. The sterilized needle is then passed to a position above a mold and the needle is then extended to pierce a preform in the mold and blow the preform in the mold.
Inventors
- 👤 M Siard
- 👤 D Pellerin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:25
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/42403; B29C49/42405; A; A61; A61L; A61L2/00; A61L2/02; A61L2/04; B29C49/46; B29C2049/4602; B29C2049/4635; B29C2049/4673; B29C2049/4679; B29C49/58; B29C2049/5831; B29C49/60; B29C2049/6072; B29C2049/6092
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
98 words
Apparatus for blow molding a preform in a mold with a sterile gas, said apparatus comprising a sterilization chamber, a hollow needle supported in said chamber for movement between a retracted position and an extended position, means for heating said chamber to a sterilization temperature, means for displacing said chamber between a sterilization position in which the needle is retracted and the chamber is heated to sterilization temperature and a second injecting position adjacent the mold whereat the needle can be extended to pierce a preform in the mold, and means for passing sterile gas through the needle.
Claim 2
Dependent Claim
98 words
Apparatus for blow molding a preform in a mold with a sterile gas, said apparatus comprising a sterilization chamber, a hollow needle supported in said chamber for movement between a retracted position and an extended position, means for heating said chamber to a sterilization temperature, means for displacing said chamber between a sterilization position in which the needle is retracted and the chamber is heated to sterilization temperature and a second injecting position adjacent the mold whereat the needle can be extended to pierce a preform in the mold, and means for passing sterile gas through the needle.
Claim 3
Dependent Claim
27 words
Apparatus as claimed in claim 1 comprising means for passing steam through said needle in the sterilization position before the sterile gas is passed through the needle.
Claim 4
Dependent Claim
25 words
Apparatus as claimed in claim 2 comprising a trough positioned beneath said chamber in said sterilization position to receive steam condensate passed through said needle.
Claim 5
Dependent Claim
69 words
Apparatus as claimed in claim 1 wherein said chamber is provided with an aperture coaxial with said needle to permit passage thereof between the retracted and extended positions, said means for heating the chamber comprising electrical heating resistances in said chamber around said needles; and a bellows connecting said needle and chamber and serving to convey sterile gas to the needle in isolation from the interior of said chamber.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |