Patent US3794453A successfully refreshed from Google Patents.
US3794453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capsule making apparatus
Assignee: Individual
•
Filing: 1972-08-02
•
Granted: 1974-02-26
•
Expires: 1992-08-02
Abstract
Abstract An improvement in capsule making apparatus is provided in the form of air duct means for conditioning freshly dipped capsule mold pins at a point in the work cycle just prior to the elevation of the pin bars to the drier stage. The film coating on the pins is thereby stabilized so that asymmetric film flow during transfer and elevation is substantially decreased.
Inventors
- 👤 S Padilla
- 👤 R Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:50
CPC Classifications
A; A61; A61J; A61J3/00; A61J3/07; A61J3/071; A61J3/077; B; B29; B29C; B29C41/00; B29C41/02; B29C41/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
In capsule making apparatus comprising a set of capsule pin bars having elongated pins each pin having a rounded end, a dipping tank, and means for transferring the pin bars continuously in timed relation through a stepwise cycle of pin dipping in gel solution, withdrawing and inverTing the pins while coated with liquid film which is subject to uneven distribution during transfer under action of gravity, and drying and stripping the coating on the pins, the transfer means including an elevator for lifting and rotating pin bars from a loading station and means for supplying the loading station with bars of freshly dipped pins with the rounded end of each pin lowermost, the improvement characterized by air conduit means having a distribution orifice located adjacent the loading station for moving cooling air upwardly against the rounded ends of the coated pins, the orifice being shaped to provide for uniform flow through a confined zone surrounding the array of pin ends of bars at the loading station.
Claim 2
Dependent Claim
166 words
In capsule making apparatus comprising a set of capsule pin bars having elongated pins each pin having a rounded end, a dipping tank, and means for transferring the pin bars continuously in timed relation through a stepwise cycle of pin dipping in gel solution, withdrawing and inverTing the pins while coated with liquid film which is subject to uneven distribution during transfer under action of gravity, and drying and stripping the coating on the pins, the transfer means including an elevator for lifting and rotating pin bars from a loading station and means for supplying the loading station with bars of freshly dipped pins with the rounded end of each pin lowermost, the improvement characterized by air conduit means having a distribution orifice located adjacent the loading station for moving cooling air upwardly against the rounded ends of the coated pins, the orifice being shaped to provide for uniform flow through a confined zone surrounding the array of pin ends of bars at the loading station.
Claim 3
Dependent Claim
30 words
Apparatus according to claim 1 where the distribution orifice is located below the loading station and the air conduit means is in communication with a source of positive air pressure.
Claim 4
Dependent Claim
30 words
Apparatus according to claim 1 wherein the distribution orifice is located above the loading station and the air conduit means is in communication with a source of negative air pressure.
Claim 5
Dependent Claim
46 words
Apparatus according to claim 1 wherein the air conduit means is in communication with a source of air pressure adapted to generate air flow through the confined zone at a rate sufficient to stabilize the liquid film coating on coated pins located at the loading station.
Claim 6
Dependent Claim
16 words
Apparatus according to claim 3 wherein the air conduit means comprises a chamber surrounding the elevator.
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |