US4469292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape cassette
Assignee: Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
•
Filing: 1982-05-05
•
Granted: 1984-09-04
•
Expires: 2002-05-05
Abstract
Abstract A tape cassette of a relatively small size for use in portable tape devices and the like. The cassette is formed out of two displaceable sections containing respective winding spools for the tape wherein in the sections move from a first position in which the cassette is relatively small to a second or expanded position wherein the cassette can be used in a larger tape device. A receiving container is provided adapted to receive the tape cassette to provide an outer dimension of a larger size, such as that utilizable in a standard video player/recorder.
Inventors
- 👤 Hans Mangold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:44
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/06; G11B25/066; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
183 words
A tape cassette for recording/playback devices and the like, said cassette being adjustable to accommodate for differences in distance between take up and supply reel spindles in such devices, said cassette comprising: essentially rectangular sections each with two opposed walls in which respective winding spools are mounted; recording and/or playing tape maintained on said spools and adapted to pass therebetween in a predetermined path essentially parallel to one side of the cassette; an opening in said cassette adjacent said path to allow access to the tape by recording, playback or erase heads of a recorder/playback device; guide means having a rectangular cross-section displaceably connecting said sections together by engaging inner surfaces of said two opposed walls of each said section wherein the sections are displaceable along the guide means to vary the distance between the spools while maintaining them aligned so as to allow the use of the cassette in recorder/playback devices having different distances between take up and supply reel spindles while maintaining said tape in said predetermined path whether the sections are displaced from each other or in a non-displaced position.
Claim 2
Dependent Claim
183 words
A tape cassette for recording/playback devices and the like, said cassette being adjustable to accommodate for differences in distance between take up and supply reel spindles in such devices, said cassette comprising: essentially rectangular sections each with two opposed walls in which respective winding spools are mounted; recording and/or playing tape maintained on said spools and adapted to pass therebetween in a predetermined path essentially parallel to one side of the cassette; an opening in said cassette adjacent said path to allow access to the tape by recording, playback or erase heads of a recorder/playback device; guide means having a rectangular cross-section displaceably connecting said sections together by engaging inner surfaces of said two opposed walls of each said section wherein the sections are displaceable along the guide means to vary the distance between the spools while maintaining them aligned so as to allow the use of the cassette in recorder/playback devices having different distances between take up and supply reel spindles while maintaining said tape in said predetermined path whether the sections are displaced from each other or in a non-displaced position.
Claim 3
Dependent Claim
48 words
The tape cassette in accordance with claim 1 wherein said guide means is in the form of a hollow member having a rectangular cross section which is fixedly coupled to a section at one of its ends, and slidably engages to the other section at the other end.
Claim 4
Dependent Claim
54 words
The tape cassette in accordance with claims 2 or 1 wherein said guide means remains partially disposed in the slidably engaged section when the sections are fully separated; and said guide means is provided with a recess means to prevent interference between said guide means and the winding spools of the slidably engaged section.
Claim 5
Dependent Claim
175 words
A tape cassette for recorder/playback devices and the like, said cassette being adjustable to accommodate for differences in distance between take up and supply reel spindles in such devices, said cassette comprising: an essentially rectangular shaped body formed by at least two rectangular sections each with two opposing walls in which respective winding spools are mounted; recording and/or playing tape maintained on said spools and adapted to pass therebetween in a predetermined path; an opening in said body adjacent said path to allow access to the tape by recording, playback or erase heads of a recorder/playback device; guide means comprising an essentially hollow tube having a substantially rectangular cross section extending from a first one of said sections and slidably engaging the inner wall surfaces of the other of said sections; whereby said other section is displaceable along the guide means to vary the distance between the spools, said spools being maintained in alignment so as to allow the use of the cassette in recorded/playback having different distances between take up and supply reel spindles.
Claim 6
Dependent Claim
175 words
A tape cassette for recorder/playback devices and the like, said cassette being adjustable to accommodate for differences in distance between take up and supply reel spindles in such devices, said cassette comprising: an essentially rectangular shaped body formed by at least two rectangular sections each with two opposing walls in which respective winding spools are mounted; recording and/or playing tape maintained on said spools and adapted to pass therebetween in a predetermined path; an opening in said body adjacent said path to allow access to the tape by recording, playback or erase heads of a recorder/playback device; guide means comprising an essentially hollow tube having a substantially rectangular cross section extending from a first one of said sections and slidably engaging the inner wall surfaces of the other of said sections; whereby said other section is displaceable along the guide means to vary the distance between the spools, said spools being maintained in alignment so as to allow the use of the cassette in recorded/playback having different distances between take up and supply reel spindles.
Claim 7
Dependent Claim
24 words
The tape cassette in accordance with claim 4 or 1 which includes locking means capable of locking the two sections in a fixed position.
Claim 8
Dependent Claim
39 words
The tape cassette in accordance with claim 5 wherein said locking means includes a hook-like lever on one section adapted to engage or disengage with a recess or protrusion on the other section in a locking or unlocking fashion.
Claim 9
Dependent Claim
29 words
The tape cassette in accordance with claim 6 wherein said lever is movable from a fixed point for locking or unlocking with said movement facilitated by an actuating means.
Claim 10
Dependent Claim
87 words
In combination with the tape cassette in accordance with claim 4 or 1 a receiving container comprising an outer casing having inner dimensions sufficient to receive the tape cassette when the two sections are at a predetermined point displaced from each other; take up means in the form of at least two pivot arms and corresponding tape feed means adapted to engage the tape in the tape cassette and guide it within the receiving container so as to allow the feeding of the tape in said container.
Claim 11
Dependent Claim
52 words
The combination in accordance with claim 8 wherein the outer dimensions of the container corresponds to that utilizable in a first standardized size; the outer dimensions of the tape cassette when said sections are not displaced corresponds to a second standardized size and said first size is larger than the second size.
Claim 12
Dependent Claim
60 words
The combination in accordance with claim 9 wherein size of a container of the first standardized size corresponds to a tape cassette which uses a tape of approximately one half inch in width, and the size of the cassette of the second standardized size corresponds to a tape cassette which uses a tape of approximatley one quarter inch in width.
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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |