US3653607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for causing reversal or switching-off movement of a record carrier in a recording and/or playback apparatus
Assignee: US Philips Corp
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Filing: 1969-03-10
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Granted: 1972-04-04
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Expires: 1989-03-10
Abstract
Abstract Control mechanism for a tape recording and/or playback apparatus which senses when the winding disc has stopped and will switch off or reverse the movement of the tape. A cam operated member has one end which periodically contacts a control switch, the other end has a feeler in contact with the winding disc such that when the winding disc has stopped the cam operated member will be held in one switching position and will thereby initiate the switching off or reversing operation.
Inventors
- 👤 Adriaan Jan Jurriaan Lambeek
- 👤 Friedrich Laa
- 👤 Karl Rupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:49
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B15/22
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
267 words
In a recording and/or playback apparatus having means for switching off or reversing direction of the record carrier drive, a control mechanism for initiating the switching off or reversing operation comprising a first component rotatably mounted on the apparatus for constant rotation when in operation, a second component mounted for rotation only during travel of the record carrier, cam means attached to said first component, an operating member movably mounted on said apparatus for cooperation with said cam means being arranged for displacement by said cam means, a switch being actuated by said operating member when said operating member is displaced by said cam means, said cam means continuously cycling so as to cause periodic displacement of said operating member for cyclically actuating and deactuating said switch, at least one feeler means pivotally connected to said operating member and arranged for cooperation with said second component being in frictional contact therewith so that as said second component rotates said feeler means will be urged to pivot into the direction of rotation, a spring means connected to said feeler for urging said feeler means in a direction opposite to the direction of rotation of said second component, said feeler means engaging said second component so as to maintain said operating member in a displaced condition when said second component is prevented from rotating so that said switch means will be held in one of its switching modes and prevented from cycling, and means actuated by said switch for initiating switching off of the apparatus for reversal of the drive when said switch is held in said switching mode.
Claim 2
Dependent Claim
267 words
In a recording and/or playback apparatus having means for switching off or reversing direction of the record carrier drive, a control mechanism for initiating the switching off or reversing operation comprising a first component rotatably mounted on the apparatus for constant rotation when in operation, a second component mounted for rotation only during travel of the record carrier, cam means attached to said first component, an operating member movably mounted on said apparatus for cooperation with said cam means being arranged for displacement by said cam means, a switch being actuated by said operating member when said operating member is displaced by said cam means, said cam means continuously cycling so as to cause periodic displacement of said operating member for cyclically actuating and deactuating said switch, at least one feeler means pivotally connected to said operating member and arranged for cooperation with said second component being in frictional contact therewith so that as said second component rotates said feeler means will be urged to pivot into the direction of rotation, a spring means connected to said feeler for urging said feeler means in a direction opposite to the direction of rotation of said second component, said feeler means engaging said second component so as to maintain said operating member in a displaced condition when said second component is prevented from rotating so that said switch means will be held in one of its switching modes and prevented from cycling, and means actuated by said switch for initiating switching off of the apparatus for reversal of the drive when said switch is held in said switching mode.
Claim 3
Dependent Claim
25 words
The mechanism according to claim 1 wherein said first component comprises a fly-wheel mounted on said apparatus, said cam means being mounted on said fly-wheel.
Claim 4
Dependent Claim
53 words
The mechanism according to claim 1 further comprising a winding device for taking-up said record carrier, and a clutch operated by a driving member for frictionally driving said winding device, said winding device being rotatably mounted on said apparatus and comprising a mandril and a driven member for receiving a record carrier spool.
Claim 5
Dependent Claim
23 words
The mechanism according to claim 3 wherein said first component is said driving member, said cam means being mounted on said driving member.
Claim 6
Dependent Claim
18 words
The mechanism according to claim 4 wherein said second component is said driven member of said winding device.
Claim 7
Dependent Claim
135 words
The mechanism according to claim 5 further comprising a stop element mounted on said operating member for limiting the pivotal movement of said feeler means in the direction urged by said spring, said feeler means comprising an arm attached to an end of said operating member, said arm having a free end for engagement with said second component, and arranged for pivotal movement about the point of attachment to said operating member in a direction away from said stop element when in contact with said second component and when said second component is rotating, whereby said arm will engage said stop under the influence of said spring when said second component is not rotating and when said operating member has been displaced to an extreme position to thereby prevent further movement of said operating member.
Claim 8
Dependent Claim
40 words
The mechanism according to claim 6 further comprising means to cause said free end of said arm to be disengaged from contact with said second component by pivotal movement of said arm away therefrom when said second component reverses direction.
Claim 9
Dependent Claim
111 words
The mechanism according to claim 6 further comprising additional feeler means pivotally attached with said operating member so that at least a pair of feeler means are attached to said operating member, said pair of feelers each comprising an arm having a free end for engagement with said second component, said arms being mounted for movement in directions substantially opposite each other, one of said feeler means being arranged for cooperation with said second component when said second component is operative in one direction, the other feeler means of said pair of feeler means arranged for cooperation with said second component when said second component is operative in the reverse direction.
Claim 10
Dependent Claim
105 words
The mechanism according to claim 8 further comprising a change over mechanism having means for engagement with said pair of feeler means so that one of said feeler means is allowed to cooperate with said second component and the other feeler means is maintained out of engagement therewith when said second component is operative in one direction, and means for changing the position of said engagement means so that the other of said feeler means is allowed to cooperate with said second component and said first mentioned feeler means is held out of engagement therewith when said second component is operative in the reverse direction.
Claim 11
Dependent Claim
161 words
The mechanism according to claim 6 further comprising a pair of winding devices for receiving and supplying said tape carrier, one of said winding devices operative as the receiving means when the record carrier is travelling in one direction, the other winding device operative as the receiving means when the record carrier is operative in the other direction, additional feeler means attached with said operating member for pivotal movement so that at least a pair of feeler means are attached with said operating member, each of said feeler means being associated for cooperation with one of said winding devices, and means connected with the operating member so that only one of said feeler means is arranged for cooperative engagement with its associated winding device when the tape carrier is travelling in one direction and so that only the other feeler means is arranged for cooperative engagement with its associated winding device when the tape carrier is travelling in the other direction.
Claim 12
Dependent Claim
158 words
The mechanism according to claim 1 further comprising an additional operating member movably mounted on said apparatus so that said apparatus is provided with a pair of operating members, each of said pair of operating members having one end thereof arranged for cooperation with said cam means so that each of said operating members is displaceable in a direction opposite the other, feeler means attached to the other end of each of said operating members for cooperation with said second component, said switch means being held in one switching mode by overlapping contact with said pair of operating members while said second component is rotating each of said operating members being held in an extreme displaced position by said feeler means in contact with said second component when said second component is standing still so that said switch means will be held in the other switching mode to thereby initiate the switching-off or reversing operation of the apparatus.
Claim 13
Dependent Claim
42 words
The mechanism according to claim 11 wherein said cam means comprises a first cam element for cooperation with one of said pair of operating members and a second cam element for cooperation with the other operating member of said pair of members.
Claim 14
Dependent Claim
29 words
The mechanism according to claim 11 wherein said switch is wired in line with the supply of voltage to said apparatus thereby directly controlling all power to the apparatus.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |