US3609464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chassis for mounting printed circuit boards
Assignee: International Standard Electric Corp
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Filing: 1969-09-30
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Granted: 1971-09-28
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Expires: 1989-09-30
Abstract
Abstract A chassis is provided for printed circuit boards. This chassis includes a framework in two sections which when connected provide a means for mounting the boards in a closely packed manner. The framework is easily separated by taking out removable fasteners to provide access to the boards for servicing.
Inventors
- 👤 Dennis Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:25
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/14; H05K7/1417
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
A chassis for electrical equipment of the printed circuit board type in which the chassis is a framework comprising two sections connected mechanically to form a rigid structure, each section including means supporting one or more printed circuit boards, each supporting means including first mounting means to which printed circuit boards are held by a fastener and second mounting means to which printed circuit boards have a friction fit, said mounting means occupying positions on each of said two sections to provide to each board a permanent mounting on the respective first mounting means of a first one of said sections and a disengageable mounting on a respective second mounting means of the other section, said first and second mounting means being positioned relative to the support means so that the boards, when the chassis sections are connected, are closely packed.
Claim 2
Dependent Claim
141 words
A chassis for electrical equipment of the printed circuit board type in which the chassis is a framework comprising two sections connected mechanically to form a rigid structure, each section including means supporting one or more printed circuit boards, each supporting means including first mounting means to which printed circuit boards are held by a fastener and second mounting means to which printed circuit boards have a friction fit, said mounting means occupying positions on each of said two sections to provide to each board a permanent mounting on the respective first mounting means of a first one of said sections and a disengageable mounting on a respective second mounting means of the other section, said first and second mounting means being positioned relative to the support means so that the boards, when the chassis sections are connected, are closely packed.
Claim 3
Dependent Claim
72 words
An electrical equipment chassis as claimed in claim 1 in which the first mounting means of the support means is a bearing surface on said support means against which a printed circuit board can be held by fastening means engaging with said bearing surface, and in which the second mounting means of said support means is a groove in said support means in which a printed circuit board is an interference fit.
Claim 4
Dependent Claim
20 words
An electrical equipment chassis as claimed in claim 2 in which the support means is molded from a plastics material.
Claim 5
Dependent Claim
27 words
An electrical equipment chassis as claimed in claim 2 in which the disengageable mounting has associated guide surfaces to direct a printed circuit board into the groove.
Claim 6
Dependent Claim
64 words
An electrical equipment chassis as claimed in claim 1 in which each chassis section is L-shaped, the limbs of which comprise a metal panel and a printed circuit panel joined by tamper-resistant fastenings, in which said support means are mounted on the printed circuit panel in which the sections when mechanically connected form a rectangular structure with the printed circuit panels opposite each other.
Claim 7
Dependent Claim
83 words
An electrical equipment chassis as claimed in claim 5 in which one metal panel is a control mounting panel, in which there is a slot for each control mounting bush, and in which a filler plate on each bush overlaps the slot and is clamped against the panel between the bush and a clamping nut on the bush to mount the control, whereby said control can be mounted on or removed from the Panel by only loosening the clamping nut on the bush.
Claim 8
Dependent Claim
66 words
An electrical equipment chassis as claimed in claim 1, in which the chassis sections each correspond to a discrete electrical section of the equipment in which the printed boards comprising each electrical section are wired together on the respective chassis section and in which the chassis sections, when mechanically disconnected, remain electrically connected so that all surfaces of the boards can be examined while in operation.
Claim 9
Dependent Claim
104 words
An electrical equipment chassis as claimed in claim 1 in which the support means is a plastics body with a bearing surface in which there are tapped holes inserts so that a printed circuit board can be permanently mounted on the bearing surface, in which the body has tapped holes inserts therethrough for fastening means to attach it to said chassis, in which the body has a resilient groove to accommodate the edge of a printed circuit board, which groove is an interference fit on said edge, and in which there are guide surfaces adjacent said groove to guide said edge toward said groove.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |