Patent US1732109A successfully refreshed from Google Patents.
Patent US4126888A successfully refreshed from Google Patents.
US4126888A
Expired / Lapsed
US
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Magnetic recording and reproducing apparatus of rotating head type
Assignee: Panasonic Holdings Corp
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Filing: 1977-04-25
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Granted: 1978-11-21
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Expires: 1997-04-25
Abstract
Abstract Disclosed is a magnetic recording and reproducing apparatus of the rotating head type in which a magnetic tape is drawn out from a tape cassette by means of tape lead-out pins and brought into close contact with a head cylinder containing rotating heads. Each of the tape lead-out pins is mounted on a slide member which is adapted to be driven by a drive means and slideably guided along a guide path consisting of a guide slot formed in a base plate of the apparatus. With such arrangement, the guide path need not coincide with the path of the driving means, whereby the tape loading mechanism and hence the apparatus as a whole can be small in size.
Inventors
- 👤 Yoshiaki Hayashi
- 👤 Nobuyoshi Fujimori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:57
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/665; G11B15/6653; G11B15/6656; G11B15/6658
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
207 words
A magnetic tape recording and reproducing apparatus of the rotary head type, in which a magnetic tape cassette containing a magnetic tape is loaded, comprising: a base plate; a head cylinder mounted on said base plate and having a rotary head, a pair of guide grooves being provided in said base plate on either side of said head cylinder and extending between a first position adjacent said head cylinder and a second position adjacent a magnetic tape cassette loaded in said apparatus; a movable base slidably engaged within each of said guide grooves, said movable base having a vertical pin affixed thereto; a pair of loading rings provided below said base plate; driving means for rotating each said loading ring; and means for connecting each said movable base to one of said loading rings so that said movable base integrally moves with each said loading ring along a different one of said guide grooves, said means being further adapted to slidably move each said base in the direction of width of said guide grooves in relation to said loading ring, each said movable base being freely movable along said guide groove between the first and second positions when said loading ring is operated through said driving means.
Claim 2
Dependent Claim
207 words
A magnetic tape recording and reproducing apparatus of the rotary head type, in which a magnetic tape cassette containing a magnetic tape is loaded, comprising: a base plate; a head cylinder mounted on said base plate and having a rotary head, a pair of guide grooves being provided in said base plate on either side of said head cylinder and extending between a first position adjacent said head cylinder and a second position adjacent a magnetic tape cassette loaded in said apparatus; a movable base slidably engaged within each of said guide grooves, said movable base having a vertical pin affixed thereto; a pair of loading rings provided below said base plate; driving means for rotating each said loading ring; and means for connecting each said movable base to one of said loading rings so that said movable base integrally moves with each said loading ring along a different one of said guide grooves, said means being further adapted to slidably move each said base in the direction of width of said guide grooves in relation to said loading ring, each said movable base being freely movable along said guide groove between the first and second positions when said loading ring is operated through said driving means.
Claim 3
Dependent Claim
40 words
An apparatus as set forth in claim 1, wherein each of said guide groove has a curvature which is different from that of the locus described by said connecting means with said loading ring being rotated through said driving means.
Claim 4
Dependent Claim
45 words
An apparatus as set forth in claim 1, wherein said connecting means includes a slidable member resiliently engaged with said loading ring, said slidable member being coupled to said movable base, said movable bases thereby resiliently bearing against stopper means located in said first position.
Claim 5
Dependent Claim
33 words
An apparatus as set forth in claim 3, wherein said slide member is provided with a bent portion having an elongated slot for slidable engagement with a pin provided on said movable base.
Claim 6
Dependent Claim
31 words
An apparatus as set forth in claim 3, wherein said slidable member includes a bent portion having a pin for slidable engagement in an elongated slot provided in said movable base.
References Cited (Backward Citations)
US3740492A
Cited
US3871025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |