US4093833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving coil cartridge with magnetic means to affix stylus holder to cartridge casing
Assignee: Individual
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Filing: 1976-07-13
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Granted: 1978-06-06
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Expires: 1996-07-13
Abstract
Abstract A moving coil cartridge comprises a cartridge casing with a magnet and a moving coil for converting vibration of a stylus to electrical energy and a stylus holder case having a magnetic member which is attracted by the magnet to fix the stylus holder case to the cartridge casing.
Inventors
- 👤 Kenkichi Tsukamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:08
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/12; H04R9/16; G; G11; G11B; G11B3/00; G11B3/44; G11B3/46; H04R1/00; H04R1/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
158 words
A moving coil cartridge device comprising: a. a vibrator section (B) including a cantilever stylus with a stylus holder case (10) and stylus holding means (10b, 10c) for said section; b. a cartridge casing (40) disposed over said vibrator means (B), said cartridge casing (40) having retaining members (40a, 40b) for retaining said holding means (10b, 10c); c. generator means (A) within said cartridge casing (40) for translating said stylus motion into electrical energy, said generator means (A) having a magnet (16) and yokes (17,18) with an air gap (G) for providing a magnetic field therein, a moving coil (15a) coupled to said vibrator section (B) in said air gap (G), a recess (20) in one of said yokes (17); and, d. a magnet member (14) on said stylus holder case (10) so disposed as to be attracted by said magnet (16) and enter said recess (20) to affix said vibrator section (B) to said generator means (A).
Claim 2
Dependent Claim
158 words
A moving coil cartridge device comprising: a. a vibrator section (B) including a cantilever stylus with a stylus holder case (10) and stylus holding means (10b, 10c) for said section; b. a cartridge casing (40) disposed over said vibrator means (B), said cartridge casing (40) having retaining members (40a, 40b) for retaining said holding means (10b, 10c); c. generator means (A) within said cartridge casing (40) for translating said stylus motion into electrical energy, said generator means (A) having a magnet (16) and yokes (17,18) with an air gap (G) for providing a magnetic field therein, a moving coil (15a) coupled to said vibrator section (B) in said air gap (G), a recess (20) in one of said yokes (17); and, d. a magnet member (14) on said stylus holder case (10) so disposed as to be attracted by said magnet (16) and enter said recess (20) to affix said vibrator section (B) to said generator means (A).
Claim 3
Dependent Claim
45 words
A device as claimed in claim 1 including a cantilever suspension wire (12) having an elongated portion (50), a cantilever receiving portion (51) at one end of said elongated portion, and, a fixing portion (52) for affixing the wire to the stylus holder case (10).
Claim 4
Dependent Claim
87 words
A device as claimed in claim 2 including a cantilever spring (13) having an open ring cantilever holding portion (60) with a recess (61), two elongated elastic portions (62) connected to said cantilever holding portion (60) disposed substantially at normal angles to each other, and, a fixing portion (63) connected to said two elastic portions, the elongated portion (50) of the suspension wire (12) being inserted into the recess (61) so that an abutting end (53) of said suspension wire (12) is abutted against the leaf spring.
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) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |