Patent US4297306A successfully refreshed from Google Patents.
US4297306A
Expired / Lapsed
US
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Neck orienting method of bottles of saturated polyester resins
Assignee: Yoshino Kogyosho Co Ltd
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Filing: 1979-11-07
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Granted: 1981-10-27
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Expires: 1999-11-07
Abstract
Abstract Herein disclosed is a method of orienting the neck of a bottle of a saturated polyester resin so as to enhance the physical properties and durability of the neck. The neck orienting method includes the step of inserting an orienting rod having a taper head into the neck which is being heated. The neck orienting method may include the step of orienting only the mouth edge of the neck.
Inventors
- 👤 Yataro Yoshino
- 👤 Sadao Suzuki
- 👤 Takuzo Takada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:08
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/76; B29C49/071; B29C57/00; B29C2949/00; B29C2949/07; B29C2949/072; B29C2949/0722; B29C2949/0724; B29C2949/073; B29C2949/0731; B29C2949/0733; B29C2949/076; B29C2949/0768; B29C2949/0769; B29C2949/077; B29C2949/0772; B29C2949/0773; B29C2949/078; B29C2949/20; B29C2949/22; B29C2949/24; B29C2949/26; B29C2949/28; B29C49/761
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
183 words
A method of forming the neck portion of a synthetic resin bottle, the method comprising the steps of: (a) forming a parison of synthetic resin, the parison having a neck portion and an outwardly projecting lip at the upper outer circumferential end of the neck portion; (b) heating the neck portion of the parison to an orientable temperature; (c) holding the parison so that the outwardly projecting lip is retained by a plurality of radially extending arms, said arms being movable back and forth on a horizontal plane; (d) inserting an orienting rod into the neck portion of the parison, the orienting rod having a converging tapered head and a straight body portion, the straight body portion being of a diameter greater than the diameter of the neck portion prior to insertion of the orienting rod, the neck portion being radially stretched thereby; and (e) moving the arms radially outwardly as the tapered portion of the orienting rod is inserted into the neck portion of the parison whereby said arms continue to hold the parison as the neck portion thereof is radially stretched.
Claim 2
Independent Claim
183 words
A method of forming the neck portion of a synthetic resin bottle, the method comprising the steps of: (a) forming a parison of synthetic resin, the parison having a neck portion and an outwardly projecting lip at the upper outer circumferential end of the neck portion; (b) heating the neck portion of the parison to an orientable temperature; (c) holding the parison so that the outwardly projecting lip is retained by a plurality of radially extending arms, said arms being movable back and forth on a horizontal plane; (d) inserting an orienting rod into the neck portion of the parison, the orienting rod having a converging tapered head and a straight body portion, the straight body portion being of a diameter greater than the diameter of the neck portion prior to insertion of the orienting rod, the neck portion being radially stretched thereby; and (e) moving the arms radially outwardly as the tapered portion of the orienting rod is inserted into the neck portion of the parison whereby said arms continue to hold the parison as the neck portion thereof is radially stretched.
Claim 3
Dependent Claim
39 words
The method according to claim 1, wherein the step of moving the arms radially outwardly is performed in accordance with the length of insertion of the tapered head of the orienting rod into the neck portion of the parison.
Claim 4
Dependent Claim
24 words
The method according to claim 2, wherein said parison including the neck portion and lip thereof is formed by injection molding the synthetic resin.
Claim 5
Dependent Claim
26 words
The method according to claim 3, wherein the portion of said parison other than said neck portion is biaxially oriented to form the synthetic resin bottle.
Claim 6
Dependent Claim
27 words
A method as set forth in claim 1, wherein a thread is formed on the neck of said parison during the injection molding process of said parison.
Claim 7
Dependent Claim
21 words
A method as set forth in claim 1, wherein said orienting rod is formed with a plurality of stepped, tapered heads.
Claim 8
Dependent Claim
38 words
A method as set forth in claim 1, wherein said orienting rod is formed at its base with a step shoulder acting as a stopper to regulate the length of insertion thereof into the neck of said parison.
Claim 9
Dependent Claim
30 words
A method as set forth in claim 1, wherein said orienting rod is connected to an ultrasonic wave generator so that it may be inserted while generating ultrasonic waves therefrom.
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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |