Patent US2320647A successfully refreshed from Google Patents.
US4929802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically shielded cabin
Assignee: Zeppelin GmbH
•
Filing: 1988-12-14
•
Granted: 1990-05-29
•
Expires: 2008-12-14
Abstract
Abstract An electromagnetically shielded cabin is disclosed which utilizes a novel sealing system enabling reduced maintenance expenditures for maintaining necessary electrical contract, and thus the necessary shield attenuation values, when cabin parts are made of aluminum. The contact surfaces forming part of the novel sealing system are coated with tin which enable the reduced maintenance expenditures and achieve excellent shield attenuation values.
Inventors
- 👤 Arno Schaepers
- 👤 Bernd Grabherr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:44
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015; H05K9/0016
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
An electromagnetically shielded cabin with a sealing system for an abutting area between a stationary component and a movable wall component such as a door, a flap, a hatch or a window, said sealing system comprising two spaced, bent contact springs being connected to the one component between which a contact web connected to the other component can be pressed, contact surfaces being in each case formed between the contact web and the contact springs and the contact springs and the one component, at least one of said contact surfaces is comprised of aluminum and in particular, said contact surfaces comprised of aluminum are provided with a coating of tin.
Claim 2
Dependent Claim
110 words
An electromagnetically shielded cabin with a sealing system for an abutting area between a stationary component and a movable wall component such as a door, a flap, a hatch or a window, said sealing system comprising two spaced, bent contact springs being connected to the one component between which a contact web connected to the other component can be pressed, contact surfaces being in each case formed between the contact web and the contact springs and the contact springs and the one component, at least one of said contact surfaces is comprised of aluminum and in particular, said contact surfaces comprised of aluminum are provided with a coating of tin.
Claim 3
Dependent Claim
33 words
A cabin according to claim 1, characterized in that a metal with a melting temperature higher than that of tin is provided as a coupling agent between said aluminum surface and the tin.
Claim 4
Dependent Claim
23 words
A cabin according to one of the claims 1 to 3, characterized in that the contact springs also have a coating of tin.
Claim 5
Dependent Claim
23 words
A cabin according to one of the claims 1 to 3, characterized in that the contact springs also have a coating of tin.
Claim 6
Dependent Claim
17 words
A cabin according to claim 1, characterized in that the coating is applied by means of flame-spraying.
Claim 7
Dependent Claim
24 words
A cabin according to claim 1, characterized in that the contact web has a wedge-shaped cross-section tapered in the direction towards the contact springs.
Claim 8
Dependent Claim
27 words
A cabin according to claim 1, characterized in that the contact springs are disposed in a groove which has a wedge-shaped cross-section corresponding to the contact web.
Claim 9
Dependent Claim
23 words
A cabin according to claim 6 or 7, characterized in that the wedge-shaped cross-section has an angle of aperture of 25° to 35°.
Claim 10
Dependent Claim
28 words
A cabin according to claim 7, characterized in that opposite limiting walls of the groove have undercuts into which projections disposed at the contact springs can be locked.
References Cited (Backward Citations)
US2858520A
Cited
US3437735A
Cited
DE2601277A1
Cited
US4069618A
Cited
DE3305928A1
Cited
US4786758A
Cited
US4750569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |