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US 4,305,145 AGranted
Spindle retracting mechanism for disc record player
AssigneeRCA Corporation
InventorsLarry M. Hughes, Kenneth L. George
Life of this patent
Estimating the term…
Abstract
In a video disc player, the turntable spindle is held in a raised position such that it is maintained in engagement with the record center hole when the turntable is lowered to transfer a spinning record from the turntable to the receiver pads. A mechanism, responsive to the insertion of an empty jacket into the player, retracts the spindle to allow the insertion of the jacket into the player free from interference with the spindle.
Claims12
In a record player for recovering prerecorded information from a disc record having a center hole;
- said record being subject to removable occupancy of a protective cover;
- said player including a turntable for rotatably supporting said record;
- said player having a spindle disposed coaxially with said turntable and subject to reception in said record center hole;
- said spindle being adapted for relative motion independent of said turntable along a path parallel to the axis of said turntable;
- an empty cover being inserted into said player along a path for retrieving a record retained in said player;
- apparatus comprising:
- (A) a pulldown member coupled to said spindle;
- (B) an element for pivotally supporting said pulldown member about an axis disposed substantially orthogonal to the axis of said turntable;
- said supporting element being subject to motion between an elevated position and a depressed position;
- and
- (C) means responsive to said cover insertion into said player for causing motion of said supporting element from said elevated position to said depressed position;
- said pulldown member being responsive to the motion of said supporting element to said depressed position for effecting retraction of said spindle out of said cover insertion path.
9 more elements
In a record player for recovering prerecorded information from a disc record having a center hole;
- said record being subject to removable occupancy of a protective cover;
- said player including a turntable for rotatably supporting said record;
- said player having a spindle disposed coaxially with said turntable and subject to reception in said record center hole for centering said record with respect to said turntable;
- said player further having means for mounting said spindle to said turntable for relative motion independent of said turntable along a path parallel to the axis of said turntable;
- said player further including a receiving means for supporting a record retained in said player;
- wherein said turntable is respectively lifted and lowered relative to said receiving means to transfer said retained record from said receiving means to said turntable for playback and from said turntable to said receiving means for retrieval;
- said player being equipped with means for holding said spindle in a raised location such that said spindle remains in engagement with said center hole of said retained record when said turntable is lowered for effecting transfer of said retained record to said receiving means;
- wherein an empty cover is inserted into said player along a further path for retrieving said retained record resting on said receiving means;
- said player additionally including means for retracting said spindle to a location out of said cover insertion path during insertion of said cover into said player to permit said cover insertion free from interference with said spindle;
- said spindle retracting means comprising:
- (A) a pulldown member coupled to said spindle;
- (B) an element pivotally supporting said pulldown member about an axis disposed substantially orthogonal to the axis of said turntable;
- said supporting element being subject to motion between an elevated position and a depressed position;
- and
- (C) means responsive to said cover insertion into said player for causing motion of said supporting element from said elevated position to said depressed position;
- said pulldown member being responsive to the supporting element to said depressed position for effecting retraction of said spindle out of said cover insertion path.
13 more elements
Dependencies are inferred from the claim text.