Patent US3364948A successfully refreshed from Google Patents.
Patent US3632264A successfully refreshed from Google Patents.
US3632264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neck-forming collet having alternate inverted wedge-shaped jaws
Assignee: Phillips Petroleum Co
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Filing: 1969-11-26
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Granted: 1972-01-04
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Expires: 1989-11-26
Abstract
Abstract Apparatus for forming the thread and/or neck area at one end of a tubular parison comprises a collet having alternate jaws which are flared at the inward extension thereof and corresponding jaws which flare in a direction away from the center. The jaws which flare in a direction toward the center are biased outwardly and the other jaws are biased inwardly so that as the collet closes on a parison, no cracks are present between adjacent jaws.
Inventors
- 👤 Alvin E Butcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:52
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/76; B29C49/761; B29C57/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
Apparatus comprising in combination: a collet having at one end a first plurality of jaws flaring toward the inward portion thereof; a second plurality of jaws spaced one between each of said first plurality of jaws, said first plurality of jaws being biased radially outward and said second plurality of jaws being biased radially inward such that without any restraining influence said collet is in an expanded position with inner forming surfaces of said first plurality of jaws being disposed radially outward from inner forming surfaces of said second plurality of jaws; means comprising a sleeve around said collet which, on axial movement toward saiD end of said collet having said jaws, exerts pressure radially inward on said first plurality of jaws to close said jaws to form a circle, facing surfaces of said first and second jaws being parallel and in sliding contact during all of said closing operation; and an internal plug disposed so as to provide an annulus between an outer forming surface of said plug and said inner forming surfaces of said jaws when said jaws are closed.
Claim 2
Dependent Claim
182 words
Apparatus comprising in combination: a collet having at one end a first plurality of jaws flaring toward the inward portion thereof; a second plurality of jaws spaced one between each of said first plurality of jaws, said first plurality of jaws being biased radially outward and said second plurality of jaws being biased radially inward such that without any restraining influence said collet is in an expanded position with inner forming surfaces of said first plurality of jaws being disposed radially outward from inner forming surfaces of said second plurality of jaws; means comprising a sleeve around said collet which, on axial movement toward saiD end of said collet having said jaws, exerts pressure radially inward on said first plurality of jaws to close said jaws to form a circle, facing surfaces of said first and second jaws being parallel and in sliding contact during all of said closing operation; and an internal plug disposed so as to provide an annulus between an outer forming surface of said plug and said inner forming surfaces of said jaws when said jaws are closed.
Claim 3
Dependent Claim
16 words
Apparatus according to claim 1 wherein said forming surfaces are in the form of thread-forming means.
Claim 4
Dependent Claim
27 words
Apparatus according to claim 1 wherein the angle between opposite faces of said jaws of said first plurality of jaws is within the range of 10*- 40*.
Claim 5
Dependent Claim
23 words
Apparatus according to claim 1 comprising in addition means to move said plug axially forward along with said forward movement of said sleeve.
Claim 6
Dependent Claim
32 words
Apparatus according to claim 1 comprising in addition two mold halves; means to open and close said mold halves; and means to introduce fluid pressure into a parison held by said jaws.
Claim 7
Dependent Claim
17 words
Apparatus according to claim 5 comprising in addition: means to heat a parison preform to orientation temperature.
Claim 8
Dependent Claim
39 words
Apparatus according to claim 6 comprising in addition: means to extrude a continuous length of tubing; means to cool said tubing to a temperature below the melting point thereof; and means to sever said tubing into said individual parisons.
Claim 9
Dependent Claim
16 words
Apparatus according to claim 7 wherein said means to heat said parison comprises an air oven.
References Cited (Backward Citations)
US3079633A
Cited
US3247548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |