Patent US4631638A successfully refreshed from Google Patents.
US4631638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Box for holding circuit boards
Assignee: US Philips Corp
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Filing: 1985-05-24
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Granted: 1986-12-23
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Expires: 2005-05-24
Abstract
Abstract A box for holding circuit boards which box has horizontal slots at its side walls which are arranged vertically one above the other and in which a lever can be operated from the front of the box, which lever is kept movable in a slot of the side wall, is guided between a circuit board and a side wall of the box, and engages behind the circuit board by means of an operating projection.
Inventors
- 👤 Fritz Felsner
- 👤 Erich Geier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:06
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/14; H05K7/1421
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A box with a front and a back for holding circuit boards, said box having horizontal slots in a side wall which slots are arranged vertically one above the other, said box including a lever which is operable from the front of the box, said lever being disposed between a circuit board held in said box and said side wall, said lever including a fulcrum disposable in said horizontal slots for movement therein and an operating projection at the end of said lever at the back of said box for engaging a circuit board to aid in the removal thereof.
Claim 2
Dependent Claim
100 words
A box with a front and a back for holding circuit boards, said box having horizontal slots in a side wall which slots are arranged vertically one above the other, said box including a lever which is operable from the front of the box, said lever being disposed between a circuit board held in said box and said side wall, said lever including a fulcrum disposable in said horizontal slots for movement therein and an operating projection at the end of said lever at the back of said box for engaging a circuit board to aid in the removal thereof.
Claim 3
Dependent Claim
13 words
A box as claimed in claim 1, wherein said fulcrum is a screw.
Claim 4
Dependent Claim
15 words
A box as claimed in claim 2, wherein said operating projection is a circular pin.
Claim 5
Dependent Claim
15 words
A box as claimed in claim 1, wherein said operating projection is a circular pin.
References Cited (Backward Citations)
DE687866C
Cited
DE1262383B
Cited
DE2030906A1
Cited
DE2002350A1
Cited
US3644868A
Cited
US3691430A
Cited
US4109300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |