US4208684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damper for constant load arm
Assignee: International Business Machines Corp
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Filing: 1978-05-11
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Granted: 1980-06-17
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Expires: 1998-05-11
Abstract
Abstract A head mount faithfully follows flexible media perturbations. The head mount consists of a pivoted rigid head support arm controlled by an offset spring having an offset damping and yieldably urging relationship to the rigid arm. The rigid arm acts as a free beam. The arm is pivoted to a record support radially movable with respect to a record disk.
Inventors
- 👤 Donovan M. Janssen
- 👤 Raymond E. Kellow, Sr.
- 👤 William A. Picker
- 👤 Anton J. Radman, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:27
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/16; G11B5/00; G11B5/48; G11B5/4806; G11B5/4833; G11B5/54; G11B5/55; G11B5/5521; G11B5/58
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
A head-arm assembly adapted to be mounted upon a carriage, a base member for mounting the head-arm assembly to the carriage and including a mounting portion, characterized in that: an elongated rigid beam member extends away from said mounting portion; pivot means for pivotably securing said rigid beam member to said mounting portion in a first plane, one of said members having a laterally offset means laterally offset adjacent said pivot means; spring-damping means rigidly secured to another one of said members and operatively connected between said base member and said rigid beam member via said offset means and including a friction sliding engagement with said laterally offset means for providing spring urging and damping functions between said base member and said rigid beam member along a plane offset from said first plane and said elongated rigid beam member.
Claim 2
Dependent Claim
139 words
A head-arm assembly adapted to be mounted upon a carriage, a base member for mounting the head-arm assembly to the carriage and including a mounting portion, characterized in that: an elongated rigid beam member extends away from said mounting portion; pivot means for pivotably securing said rigid beam member to said mounting portion in a first plane, one of said members having a laterally offset means laterally offset adjacent said pivot means; spring-damping means rigidly secured to another one of said members and operatively connected between said base member and said rigid beam member via said offset means and including a friction sliding engagement with said laterally offset means for providing spring urging and damping functions between said base member and said rigid beam member along a plane offset from said first plane and said elongated rigid beam member.
Claim 3
Dependent Claim
17 words
The assembly set forth in claim 1 wherein said spring damping means is a preformed leaf spring.
Claim 4
Dependent Claim
41 words
The assembly set forth in claim 1 wherein said beam member includes an upstanding shoulder in proximity to said pivotal connection, and said spring damping means being affixed to said upstanding shoulder and extending in damping relationship to said base member.
Claim 5
Dependent Claim
48 words
The assembly set forth in claim 1 wherein said members respectively have an upstanding shoulder and an upstanding offset means and said spring damping means extending between said offset means and including said shoulder and being affixed at said shoulder and in rubbing contact with said offset means.
Claim 6
Dependent Claim
25 words
The assembly set forth in claim 4 wherein said spring damping means is a leaf spring preformed for facilitating damping rubbing action at small motions.
Claim 7
Dependent Claim
51 words
The assembly set forth in claim 5 wherein said leaf spring is affixed to said upstanding shoulder and in rubbing contact with said upstanding offset means, and said pivot means is a leaf hinge connecting said beam member to said base member adjacent said shoulder and to said outwardly extending flange.
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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) | 1983-06-17 | 1983-12-17 | 1984-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-17 | 1987-12-17 | 1988-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-17 | 1991-12-17 | 1992-06-17 | $7700.00 | Window Closed / Lapsed |