US4200250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure pad support for a cassette
Assignee: US Philips Corp
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Filing: 1978-12-14
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Granted: 1980-04-29
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Expires: 1998-12-14
Abstract
Abstract A magnetic tape cassette for two pressure pads, has a single rigid bar-shaped support spring loaded in the direction of openings in a side surface, for pressing the tape against scanning elements. The support has two pairs of coaxial projections disposed adjacent each other in its longitudinal direction, and spaced from each other, which projections engage with play with corresponding guide slots which essentially extend perpendicularly to the side surface with the cut-outs, to render the support pivotable and moveable, the ends of the guide slots near the side surface with the cut-outs constituting the stops for the support.
Inventors
- 👤 Karl Fischer
- 👤 Josef Stebegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:04
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08757; G11B23/08771; G11B15/00; G11B15/60; G11B15/62
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
236 words
A cassette for a record carrier formed as a tape extending between two winding hubs, comprising two cover surfaces, two winding hubs arranged between said cover surfaces, a tape extending between said hubs, side surfaces interconnecting said cover surfaces, one of said side surfaces having at least two openings arranged to permit scanning elements to cooperate with the tape, a support arranged with a longitudinal direction substantially parallel to said one side surface between said cover surfaces, means for movably and pivotably journalling said support with respect to said cover surfaces, said means comprising a pair of coaxial projections extending perpendicular to one of said cover surfaces, and corresponding guide slots extending parallel to the cover surfaces and substantially perpendicular to said one side surface, each coaxial projection engaging a respective slot, two elastic pressure members supported on said support spaced from each other, each near a respective opening, arranged to press the tape against scanning elements, and spring means for biasing the support toward said one side surface into contact with stop surfaces, wherein said means for journalling said support comprises two adjacent pairs of said coaxial projections, spaced from each other in said longitudinal direction; and two respective pairs of guide slots in which the projections engage with play; and said guide slots have ends adjacent to said one side surface arranged as stops toward which the support is biased by said spring means.
Claim 2
Dependent Claim
236 words
A cassette for a record carrier formed as a tape extending between two winding hubs, comprising two cover surfaces, two winding hubs arranged between said cover surfaces, a tape extending between said hubs, side surfaces interconnecting said cover surfaces, one of said side surfaces having at least two openings arranged to permit scanning elements to cooperate with the tape, a support arranged with a longitudinal direction substantially parallel to said one side surface between said cover surfaces, means for movably and pivotably journalling said support with respect to said cover surfaces, said means comprising a pair of coaxial projections extending perpendicular to one of said cover surfaces, and corresponding guide slots extending parallel to the cover surfaces and substantially perpendicular to said one side surface, each coaxial projection engaging a respective slot, two elastic pressure members supported on said support spaced from each other, each near a respective opening, arranged to press the tape against scanning elements, and spring means for biasing the support toward said one side surface into contact with stop surfaces, wherein said means for journalling said support comprises two adjacent pairs of said coaxial projections, spaced from each other in said longitudinal direction; and two respective pairs of guide slots in which the projections engage with play; and said guide slots have ends adjacent to said one side surface arranged as stops toward which the support is biased by said spring means.
Claim 3
Dependent Claim
33 words
A cassette as claimed in claim 1 wherein said spring means comprises a hairpin spring having two arms, each arm bearing against the support at a location adjacent a pair of coaxial projections.
Claim 4
Dependent Claim
27 words
A cassette as claimed in claim 2 wherein the spring has a loop intermediate said arms, said loop encircling a pin fixed between said two cover surfaces.
Claim 5
Dependent Claim
29 words
A cassette as claimed in claim 1 wherein the support has two ridges extending perpendicular to the cover surfaces, the arms of the hairpin spring bearing against said ridges.
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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |