US4285791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode system
Assignee: Eppendorf SE
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Filing: 1980-07-03
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Granted: 1981-08-25
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Expires: 2000-07-03
Abstract
Abstract An electrode assembly for electro-chemical measuring systems includes an electrode member having a selectively sensitive membrane disposed in its front end and an electrical conductor extending from the membrane rearwardly through the electrode member. A holding member is provided to secure the electrode member in sealed relation with the membrane disposed within a measuring chamber. The holding member provides a spring loaded sealing force to the electrode member and can be applied and removed without rotation of the electrode member.
Inventors
- 👤 Hartmut Schmidt-Rabenau
- 👤 Hans-Werner Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:12
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/283
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
An electrode system comprising means defining a bore of a measuring chamber, an electrode member which can be introduced into said bore with a selectively sensitive membrane disposed in its front end and an electrical conductor extending from said membrane rearwardly through the electrode member, a holding member which can be engaged with said bore defining means for securing said electrode member upon insertion in said bore, characterized in that said holding member comprises an inner body which engages said electrode member, and a connecting portion which engages said bore defining means and wherein said connecting portion can be moved to a limited extent in the axial direction of said holding member and electrode member against spring pressure and can be rotated about the longitudinal axis of the holding member.
Claim 2
Dependent Claim
130 words
An electrode system comprising means defining a bore of a measuring chamber, an electrode member which can be introduced into said bore with a selectively sensitive membrane disposed in its front end and an electrical conductor extending from said membrane rearwardly through the electrode member, a holding member which can be engaged with said bore defining means for securing said electrode member upon insertion in said bore, characterized in that said holding member comprises an inner body which engages said electrode member, and a connecting portion which engages said bore defining means and wherein said connecting portion can be moved to a limited extent in the axial direction of said holding member and electrode member against spring pressure and can be rotated about the longitudinal axis of the holding member.
Claim 3
Dependent Claim
35 words
An electrode system according to claim 1, characterized in that said holding member inner body has a connecting element which is accessible from the outside and can be brought into contact with said electrical conductor.
Claim 4
Dependent Claim
30 words
An electrode system according to claim 2, characterized in that a contact is provided on the rear end of said inner body which is electrically connected with said connecting element.
Claim 5
Dependent Claim
22 words
An electrode system according to claim 1, comprising bayonet connector means for detachably connecting said holding member and said bore defining means.
Claim 6
Dependent Claim
34 words
An electrode system according to claim 1, characterized in that a ring seal is provided in the front end face of said electrode member which projects beyond said end face and surrounds said membrane.
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) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |