Patent US4781603A successfully refreshed from Google Patents.
US4781603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grounding system for a cabinet
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1986-05-16
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Granted: 1988-11-01
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Expires: 2006-05-16
Abstract
Abstract A grounding system for cabinets containing electronic equipment is made up from vertical bars (2), horizontal bars (3) and connection bars (11) between the horizontal bars, all the bars being made of aluminum. At the connection points between the bars there are mounted contact-making, spring-biased contact plates (4). The contact plate (4) is rectangular and provided with contact tongues (6) arranged in rows projecting from, both faces of the plate.
Inventors
- 👤 Rolf T. Olsson
- 👤 Hans O. W. Andersson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:42
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/58; H01R4/64; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015; H05K9/0016
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
124 words
A grounding system for cabinets containing electrical equipment comprising first and second bars of a yielding, soft metal for leading off ground currents, said bars being attachable to a cabinet adapted for containing electrical equipment in an arrangement in which the first and second bars overlap one another and a contact-making, spring-biased contact plate between the bars at the location where the bars overlap one another, said contact plate having a plurality of spaced contact points at which contact is made between the contact plate and said bars, the contact plate being inserted in an opening in a second plate disposed between the bars to maintain the contact between the contact plate and said bars at discrete locations constituted by said spaced contact points.
Claim 2
Dependent Claim
124 words
A grounding system for cabinets containing electrical equipment comprising first and second bars of a yielding, soft metal for leading off ground currents, said bars being attachable to a cabinet adapted for containing electrical equipment in an arrangement in which the first and second bars overlap one another and a contact-making, spring-biased contact plate between the bars at the location where the bars overlap one another, said contact plate having a plurality of spaced contact points at which contact is made between the contact plate and said bars, the contact plate being inserted in an opening in a second plate disposed between the bars to maintain the contact between the contact plate and said bars at discrete locations constituted by said spaced contact points.
Claim 3
Dependent Claim
33 words
A grounding system as claimed in claim 1 wherein said contact plate comprises a flat plate element having contact tongues arranged in a row and projecting from both sides of the contact plate.
Claim 4
Dependent Claim
23 words
A grounding system as claimed in claim 2 wherein said contact tongues are bent outwards from the contact plate in alternating opposite directions.
Claim 5
Dependent Claim
19 words
A grounding system as claimed in claim 3 wherein each tongue has opposite ends respectively forming said contact points.
Claim 6
Dependent Claim
34 words
A grounding system as claimed in claim 4 wherein said contact plate element has opposite ends and portions at said ends bent out from the plane of the contact plate to form retaining flanges.
Claim 7
Dependent Claim
17 words
A grounding system as claimed in claim 5 wherein said contact plate is made of tin bronze.
Claim 8
Dependent Claim
56 words
A grounding system as claimed in claim 5 wherein said first and second bars are respectively arranged horizontally and vertically, said system further comprising an aluminum bar for connecting the horizontal bars of adjacent cabinets together and a further said contact plate between the aluminum bar and each of the horizontal bars of the adjacent cabinets.
Claim 9
Dependent Claim
26 words
A grounding system as claimed in claim 7 wherein each horizontal bar has a groove for receiving said aluminum bar together with the further contact plate.
Claim 10
Dependent Claim
22 words
A grounding system as claimed in claim 8 wherein said aluminum bar has flanges between which said further contact plate is retained.
Claim 11
Dependent Claim
56 words
A grounding system as claimed in claim 1 wherein said first and second bars are respectively arranged horizontally and vertically, said system further comprising an aluminum bar for connecting the horizontal bars of adjacent cabinets together and a further said contact plate between the aluminum bar and each of the horizontal bars of the adjacent cabinets.
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) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |