US5093546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of connecting plastic tubes using high frequency dielectric heating
Assignee: Sekisui Chemical Co Ltd
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Filing: 1990-01-19
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Granted: 1992-03-03
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Expires: 2010-01-19
Abstract
Abstract A method of connecting plastic tubes by high-frequency heating comprising preparing an electrode block having at least two electrode members each having annular bores aligned with each other, the electrode block including at least one insulator interposed between the electrode members, the insulator having a bore aligned with those of the electrode members, inserting an end portion of one tube into the one electrode member and an end portion of the other tube into another electrode member so that both tube ends keep contact with each other in the bore of the insulator, and applying a high frequency voltage between the electrode members.
Inventors
- 👤 Toshiharu Matsumiya
- 👤 Tatsuhiko Kawaoka
- 👤 Kazuo Sakamoto
- 👤 Hiroshi Ogawara
- 👤 Shozo Shiraishi
- 👤 Hiroshi Honda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:50
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C65/00; B29C65/02; B29C65/04; B29C66/114; B29C66/1142; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/5229; B29C66/63; B29C66/636; B29C66/70; B29C66/73; B29C66/731; B29C66/7315; B29C66/73151; B29C66/80; B29C66/81; B29C66/812; B29C66/8126; B29C66/81262; B29C66/81263; B29C66/818; B29C66/8187; B29C66/81871; B29C66/71; B29C66/8122; B29C66/814; B29C66/8145; B29K; B29K2027/00; B29K2027/06; B29K2027/12; B29K2027/18; B29K2995/00; B29K2995/0037; B29K2995/007
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
186 words
A method of connecting plastic tubes by high-frequency heating, comprising the steps of: preparing an electrode block having a first electrode member and a second electrode member each having annular operation bores aligned so as to communicate with each other, the electrode block including an insulator interposed between the first and the second electrode members, and the insulator having a bore aligned with the bores of the first and second electrode members, wherein the electrode block includes a third electrode member between the first electrode member and the second electrode member, and a further insulator so that the adjacent electrode members have one insulator therebetween, the third electrode member having a bore aligned with the bores of the first and second electrode members, inserting an end portion of one tube into the first electrode member and an end portion of the other tube into the second electrode member so that both tube ends are placed in contact with each other in the annular operation bores and applying a high frequency voltage between the first and third electrode members, and between the third and second electrode members.
Claim 2
Independent Claim
186 words
A method of connecting plastic tubes by high-frequency heating, comprising the steps of: preparing an electrode block having a first electrode member and a second electrode member each having annular operation bores aligned so as to communicate with each other, the electrode block including an insulator interposed between the first and the second electrode members, and the insulator having a bore aligned with the bores of the first and second electrode members, wherein the electrode block includes a third electrode member between the first electrode member and the second electrode member, and a further insulator so that the adjacent electrode members have one insulator therebetween, the third electrode member having a bore aligned with the bores of the first and second electrode members, inserting an end portion of one tube into the first electrode member and an end portion of the other tube into the second electrode member so that both tube ends are placed in contact with each other in the annular operation bores and applying a high frequency voltage between the first and third electrode members, and between the third and second electrode members.
Claim 3
Dependent Claim
27 words
A method according to claim 1, wherein a further tube covers the end portions of the tubes so as to ensure the joint among the three tubes.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-03 | 1995-09-02 | 1996-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-03 | 1999-09-02 | 2000-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-03 | 2003-09-02 | 2004-03-03 | $7700.00 | Window Closed / Lapsed |