US4932019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk player having a vibration dissipating device
Assignee: Pioneer Corp
•
Filing: 1988-11-16
•
Granted: 1990-06-05
•
Expires: 2008-11-16
Abstract
Abstract A disk player having a means to dissipate the resonance energy that may adversely affect the disk player. The disk player comprises a holding member holding an objective lens and a servo drive mechanism for driving the objective lens, each of which are movably supported by a pair of guide members. At least one weight is bonded through a vibration absorbing member to the holding member, so that the internal loss of the vibration absorbing member dissipates the energy which otherwise may cause resonance of the holding member.
Inventors
- 👤 Akira Bessho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/04; G11B25/043; G11B33/00; G11B33/02; G11B33/08; G11B7/00; G11B7/08; G11B7/085; G11B7/0857; G11B7/08582
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
184 words
A disk player having a vibration absorbing member for dissipating resonance, said disk player comprising: a plurality of optical elements including a light emitting element, and an objective lens for focusing a light beam emitted from said light emitting element on the recording surface of a recording medium; a servo-drive mechanism for servo-driving said objective lens; a holding member for holding at least said objective lens and servo drive mechanism; a supporting mechanism supporting said holding member in such a manner that said holding member is movable along said recording surface, said supporting mechanism having a pair of guide members which movably support said holding member at both ends thereof; drive means for moving said holding member; at least one weight secured to said holding member; and a vibration absorbing member interposed between said holding member and said weight wherein any resonance energy created by movement of said holding member is dissipated by said weight and said vibration absorbing member, wherein said weight is bonded to a surface of said holding member which is perpendicular to the direction of movement of said holding member.
Claim 2
Dependent Claim
184 words
A disk player having a vibration absorbing member for dissipating resonance, said disk player comprising: a plurality of optical elements including a light emitting element, and an objective lens for focusing a light beam emitted from said light emitting element on the recording surface of a recording medium; a servo-drive mechanism for servo-driving said objective lens; a holding member for holding at least said objective lens and servo drive mechanism; a supporting mechanism supporting said holding member in such a manner that said holding member is movable along said recording surface, said supporting mechanism having a pair of guide members which movably support said holding member at both ends thereof; drive means for moving said holding member; at least one weight secured to said holding member; and a vibration absorbing member interposed between said holding member and said weight wherein any resonance energy created by movement of said holding member is dissipated by said weight and said vibration absorbing member, wherein said weight is bonded to a surface of said holding member which is perpendicular to the direction of movement of said holding member.
Claim 3
Dependent Claim
27 words
The disk player as claimed in claim 1, wherein said weight is secured to said holding member substantially at the mid-point between said pair of guide members.
Claim 4
Dependent Claim
81 words
The disk player as claimed in claim 2, in which said servo drive mechanism comprises: supporting means which supports said objective lens so that said objective lens is movable in the direction of the optical axis thereof and in a direction perpendicular thereto; drive force applying means for applying force to said objecting lens; and a base member supporting said supporting means and said drive force applying means, said weight being bonded through said vibration absorbing member to said base member.
References Cited (Backward Citations)
DE2730670A1
Cited
US4344167A
Cited
JPS5634167A
Cited
JPS57195338A
Cited
JPS59182086A
Cited
US4703470A
Cited
US4823336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |