Patent US5035396A successfully refreshed from Google Patents.
US5035396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk drive unit
Assignee: Seagate Technology LLC
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Filing: 1990-01-02
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Granted: 1991-07-30
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Expires: 2010-01-02
Abstract
Abstract An improved disk drive unit is provided for use in microcomputers such as personal computers and the like. The disk drive unit includes a substantially sealed disk drive housing and related circuit board with drive electronics carried by a common rigid chassis. A power connector plug is securely mounted onto the chassis at a rear margin thereof and cooperates with one or more interface connectors to permit simple slide fit installation of the disk drive unit into a computer system cabinet, such as a central processor unit for a computer. In addition, the disk drive unit includes improved shock mounts for supporting the sealed disk drive housing from the rigid chassis. The disk drive unit further includes a floating bushing arrangement for interconnecting the circuit board to the disk drive housing in a manner substantially isolating thermal expansion characteristics of the circuit board from the remainder of the disk drive unit.
Inventors
- 👤 Richard G. Krum
- 👤 Neil E. Bucknam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:12
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/12; G11B33/121; G11B33/123; G11B33/02; G11B33/08; Y; Y10; Y10S; Y10S248/00; Y10S248/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
A mounting arrangement for mounting a circuit board to a disk drive housing, comprising: a plurality of ports formed in said circuit board; a plurality of fastener receiving boss members on said disk drive housing; a plurality of fasteners passed respectively through said circuit board ports and fastened to said boss members, at least some of said ports in said circuit board being oversized to permit lateral shift of the circuit board generally in the plane of the circuit board relative to said disk drive housing to allow for thermal expansion and contraction of the circuit board; and a plurality of spacer bushings seated within said oversized ports for passage therethrough of the associated fasteners, said spacer bushings providing means for spacing said boss members and said fasteners from said circuit board.
Claim 2
Dependent Claim
132 words
A mounting arrangement for mounting a circuit board to a disk drive housing, comprising: a plurality of ports formed in said circuit board; a plurality of fastener receiving boss members on said disk drive housing; a plurality of fasteners passed respectively through said circuit board ports and fastened to said boss members, at least some of said ports in said circuit board being oversized to permit lateral shift of the circuit board generally in the plane of the circuit board relative to said disk drive housing to allow for thermal expansion and contraction of the circuit board; and a plurality of spacer bushings seated within said oversized ports for passage therethrough of the associated fasteners, said spacer bushings providing means for spacing said boss members and said fasteners from said circuit board.
Claim 3
Dependent Claim
54 words
The mounting arrangement of claim 1 each of said spacer bushings includes a radially enlarged flange at one end thereof interposed between the end of the associated boss member on the disk drive housing and the circuit board, and an opposite axial end projecting through and at least slightly beyond the circuit board port.
Claim 4
Dependent Claim
265 words
A mounting arrangement for mounting a circuit board to a disk drive housing, comprising: a plurality of ports formed in said circuit board; a plurality of fastener receiving boss members on said disk drive housing; a plurality of fasteners each having an elongated shank with an enlarged head at one end thereof, said fasteners having their shanks passed respectively through said circuit board ports and fastened to said boss members, said heads of said fasteners being larger than said ports to prevent passage of said fastener heads into and through said ports, whereby passage of said fastener shanks through said ports and fastening of said shanks to said boss members orients the circuit board between the disk drive housing and said fastener heads; one of said ports in said circuit board being oversized to permit lateral shift of the circuit board in the plane of the circuit board relative to the disk drive housing to allow for thermal expansion and contraction of the circuit board; and a spacer bushing seated within said oversized port and having said shank of the fastener associated with said oversized port passed therethrough, said spacer bushing including an axially extending sleeve portion positioned within said oversized port in clearance relation with the circuit board and a radially enlarged flange at one end of said sleeve portion in a position sandwiched between the associated boss member and the circuit board, said sleeve portion having an axial length greater than the thickness of the circuit board to maintain said head of the fastener associated therewith in clearance relation with the circuit board.
Claim 5
Dependent Claim
265 words
A mounting arrangement for mounting a circuit board to a disk drive housing, comprising: a plurality of ports formed in said circuit board; a plurality of fastener receiving boss members on said disk drive housing; a plurality of fasteners each having an elongated shank with an enlarged head at one end thereof, said fasteners having their shanks passed respectively through said circuit board ports and fastened to said boss members, said heads of said fasteners being larger than said ports to prevent passage of said fastener heads into and through said ports, whereby passage of said fastener shanks through said ports and fastening of said shanks to said boss members orients the circuit board between the disk drive housing and said fastener heads; one of said ports in said circuit board being oversized to permit lateral shift of the circuit board in the plane of the circuit board relative to the disk drive housing to allow for thermal expansion and contraction of the circuit board; and a spacer bushing seated within said oversized port and having said shank of the fastener associated with said oversized port passed therethrough, said spacer bushing including an axially extending sleeve portion positioned within said oversized port in clearance relation with the circuit board and a radially enlarged flange at one end of said sleeve portion in a position sandwiched between the associated boss member and the circuit board, said sleeve portion having an axial length greater than the thickness of the circuit board to maintain said head of the fastener associated therewith in clearance relation with the circuit board.
Claim 6
Dependent Claim
24 words
The mounting arrangement of claim 3 wherein said fasteners comprise a plurality of screws having threaded shanks for threaded connection with said boss members.
Claim 7
Dependent Claim
48 words
The mounting arrangement of claim 3 wherein said plurality of ports formed in the circuit board comprise three ports, wherein said plurality of fasteners comprises three fasteners, wherein two of said ports are oversized, and further wherein each of said oversized ports has a spacer bushing seated therein.
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) | 1994-07-29 | 1995-01-28 | 1995-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-29 | 1999-01-28 | 1999-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-29 | 2003-01-28 | 2003-07-30 | $7700.00 | Window Closed / Lapsed |