Patent US1374422A successfully refreshed from Google Patents.
Patent US4265689A successfully refreshed from Google Patents.
US4265689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of joining glass objects
Assignee: Plessey Overseas Ltd
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Filing: 1979-04-13
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Granted: 1981-05-05
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Expires: 1999-04-13
Abstract
Abstract Glass fibres to be joined are accurately positioned in axial alignment, pressure is applied to keep the end faces of the fibres in contact with each other and ultrasonic vibration of the two ends is used to generate heat to weld together the fibres. Also glass frit is used to weld into a precision probe by ultrasonic vibration of the glass frit causing it to melt.
Inventors
- 👤 Cyril Jeffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:12
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3801; B; B01; B01J; B01J19/00; B01J19/08; B01J19/10; C; C03; C03B; C03B23/00; C03B23/20; C03B23/207; C03C; C03C27/00; C03C27/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
67 words
A method of joining glass objects comprising arranging said glass objects in abutting relationship, applying pressure to said glass objects, to urge them together and subjecting said glass objects to ultrasonic vibrations such that the abutting portions of said glass objects are heated by friction therebetween to the melting point of the glass whereby said glass objects are fused together on the cessation of said ultrasonic vibrations.
Claim 2
Independent Claim
67 words
A method of joining glass objects comprising arranging said glass objects in abutting relationship, applying pressure to said glass objects, to urge them together and subjecting said glass objects to ultrasonic vibrations such that the abutting portions of said glass objects are heated by friction therebetween to the melting point of the glass whereby said glass objects are fused together on the cessation of said ultrasonic vibrations.
Claim 3
Dependent Claim
26 words
A method as claimed in claim 1 wherein glass frit is introduced between said glass objects prior to subjecting said glass objects to said ultrasonic vibrations.
Claim 4
Dependent Claim
23 words
A method as claimed in claim 1 or claim 2 wherein said glass objects comprise two optical fibres arranged in end-to-end abutting relationship.
Claim 5
Dependent Claim
29 words
A method as claimed in claim 3 wherein a predetermined length of the end of each said optical fibre is permitted a degree of movement in a radial direction.
Claim 6
Independent Claim
31 words
A method as claimed in claims 1 or 2 wherein said glass objects comprise a glass envelope and a glass plate, said glass plate being operable to seal said glass envelope.
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) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |