Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
501 words
In a recording and/or playback apparatus for recording and playing signals having a wide frequency spectrum the combination comprising a cylindrically shaped drum mounted on said apparatus about which a tape-shaped record carrier arranged on the apparatus is to be helically wound for recording and playback operation, a guide pin support arranged for pivotal movement about said drum between first and second operating positions, at least one guide pin carried on said guide pin support for engaging said tape-shaped record carrier, said guide pin engaging said tape-shaped record carrier when said guide pin support is in said first operating position, a shifting device having means connected to said guide pin support for shifting said guide pin support between said first and second operating positions so that when said guide pin support is shifted from said first to said second operating positions said guide pin in engagement with said tape-shaped record carrier will be pivoted about said drum thereby wrapping said tape-shaped record carrier about said drum in a helical path, a stop member mounted on said apparatus for engagement by said guide pin support so as to define said second operating position, said shifting device comprising a pull device having first and second pull members extending between said pull device and said guide pin support for pivoting said guide pin support, a motor having a reversible direction of rotation connected to said pull device for driving same, one of said pull members arranged for pivoting said guide pin support from said first to said second operating positions when said motor drives the pull device in one direction, the other of said pull members arranged for pivoting said guide pin support from said second to said first operating positions when said motor drives the pull device in the other direction, a resilient element connecting said pull member for pivoting the guide pin support from the first to the second operating positions to the guide pin support, said resilient element resiliently urging said guide pin support against said stop member when said guide pin support is pivoted to the second operating position, position retaining means arranged for holding said guide pin support is Said operating positions, manually operable switch means for initiating operation of said motor in either of its operating directions, a switch associated with each of said operating positions of said guide pin support for switching off said motor, switch-off means for operating said switch associated with said second operating position to switch-off said motor after said guide pin support has engaged said stop member, said motor continuing operation after said second operating position has been reached until said switch-off means operates said switch to turn off said motor, said guide pin support thereby being yieldably pressed against said stop member by said resilient element, said shifting device being held in the position it occupies after said guide pin support has been pivoted to one of its operating positions and said motor has been turned off by said position retaining means.
Claim 2
Dependent Claim
501 words
In a recording and/or playback apparatus for recording and playing signals having a wide frequency spectrum the combination comprising a cylindrically shaped drum mounted on said apparatus about which a tape-shaped record carrier arranged on the apparatus is to be helically wound for recording and playback operation, a guide pin support arranged for pivotal movement about said drum between first and second operating positions, at least one guide pin carried on said guide pin support for engaging said tape-shaped record carrier, said guide pin engaging said tape-shaped record carrier when said guide pin support is in said first operating position, a shifting device having means connected to said guide pin support for shifting said guide pin support between said first and second operating positions so that when said guide pin support is shifted from said first to said second operating positions said guide pin in engagement with said tape-shaped record carrier will be pivoted about said drum thereby wrapping said tape-shaped record carrier about said drum in a helical path, a stop member mounted on said apparatus for engagement by said guide pin support so as to define said second operating position, said shifting device comprising a pull device having first and second pull members extending between said pull device and said guide pin support for pivoting said guide pin support, a motor having a reversible direction of rotation connected to said pull device for driving same, one of said pull members arranged for pivoting said guide pin support from said first to said second operating positions when said motor drives the pull device in one direction, the other of said pull members arranged for pivoting said guide pin support from said second to said first operating positions when said motor drives the pull device in the other direction, a resilient element connecting said pull member for pivoting the guide pin support from the first to the second operating positions to the guide pin support, said resilient element resiliently urging said guide pin support against said stop member when said guide pin support is pivoted to the second operating position, position retaining means arranged for holding said guide pin support is Said operating positions, manually operable switch means for initiating operation of said motor in either of its operating directions, a switch associated with each of said operating positions of said guide pin support for switching off said motor, switch-off means for operating said switch associated with said second operating position to switch-off said motor after said guide pin support has engaged said stop member, said motor continuing operation after said second operating position has been reached until said switch-off means operates said switch to turn off said motor, said guide pin support thereby being yieldably pressed against said stop member by said resilient element, said shifting device being held in the position it occupies after said guide pin support has been pivoted to one of its operating positions and said motor has been turned off by said position retaining means.
Claim 3
Dependent Claim
108 words
In the apparatus according to claim 1 wherein said switch-off means for operating the switch associated with said second operating position comprises a control disc rotatably driven by said motor simultaneously with the drive of said pull device, said control disc having a recess, and a switch arm having an end arranged for cooperation with said control disc snapping into said recess to operate said switch and turn off the motor when said disc has been rotated to a position corresponding to the second operating position of said guide pin support, said switch arm holding said pull device through said drive so that second operating position is retained.
Claim 4
Dependent Claim
18 words
In the apparatus according to claim 1 further comprising a self-locking transmission gear for driving said pull device.
Claim 5
Dependent Claim
79 words
In the apparatus according to claim 1 further comprising a second resilient element connecting said pull member for pivoting the guide pin support from said second to said first positions to said guide pin support, and a further stop member for defining said first operating position mounted on said apparatus, said guide pin support being resiliently urged against said further stop member by said second resilient element when said guide pin support is pivoted to said first operating position.