Patent US5529398A successfully refreshed from Google Patents.
Patent US3592068A successfully refreshed from Google Patents.
US3592068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for adjusting the head in tape recorder
Assignee: Orion Electric Co Ltd Korea
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Filing: 1969-11-14
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Granted: 1971-07-13
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Expires: 1989-11-14
Abstract
Abstract A tape recorder head adjuster includes a mounting plate fixed to a frame. The mounting plate has a parallelogram link member supported by a pin on the mounting plate. The free end of the member has a head mounting plate having at one end the head. At the other end of the head mounting plate is contacted by a cam mounted on a rotatable shaft. A spring operates to bias the member and the head normally up. When the cam is rotated, the head is forced down against the force of the spring.
Inventors
- 👤 Takehiko Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:24
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
174 words
A device for adjusting the head in a tape recorder comprising a frame, a mounting plate fixed to said frame and having brackets thereon, a parallelogram link member haviNg the respective links pivotally connected at the corners thereon, one of said corners of said member being formed of a vertical link and the lower link being supported on a pin at said brackets, said vertical link having an integral adjusting plate fixed to said mounting plate thereby fixing the position of said vertical link, means to urge the upper and lower links of said member to pivot upwardly around said vertical link, a head-mounting plate disposed at the free end of said member and adapted to hold a head at one end thereof in contact with a tape, a cam plate mounted on a shaft and adapted to contact the other end of said head-mounting plate, and means to rotate said shaft and said cam plate, whereby said head is lowered in opposition to said urging means to contact various tracks of said tape.
Claim 2
Independent Claim
174 words
A device for adjusting the head in a tape recorder comprising a frame, a mounting plate fixed to said frame and having brackets thereon, a parallelogram link member haviNg the respective links pivotally connected at the corners thereon, one of said corners of said member being formed of a vertical link and the lower link being supported on a pin at said brackets, said vertical link having an integral adjusting plate fixed to said mounting plate thereby fixing the position of said vertical link, means to urge the upper and lower links of said member to pivot upwardly around said vertical link, a head-mounting plate disposed at the free end of said member and adapted to hold a head at one end thereof in contact with a tape, a cam plate mounted on a shaft and adapted to contact the other end of said head-mounting plate, and means to rotate said shaft and said cam plate, whereby said head is lowered in opposition to said urging means to contact various tracks of said tape.
Claim 3
Dependent Claim
28 words
A device as claimed in claim 1, wherein said cam plate and said shaft are mounted on a baseplate, and further comprising means for resiliently supporting said baseplate.
Claim 4
Dependent Claim
29 words
A device as claimed in claim 2, wherein said means for resiliently supporting said baseplate comprises a spring and a plate spring positioned between said baseplate and said frame.
References Cited (Backward Citations)
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |