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US 4,308,757 AGranted
Clutch device, particularly for the manual tuning control in a car radio
AssigneeAutovox S.p.A.
InventorEzio F. Dellantonio
Life of this patent
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AssigneeAutovox S.p.A.
InventorEzio F. Dellantonio
Estimating the term…
A clutch device, particularly for the manual tuning control in a car radio, has the function of positively transmitting, through rack and pinion gears, movement from the tuning knob to the tuning runner. The clutch device comprises a rotating shaft (16) axially reciprocable with respect to frame (10) between an extracted position and an inserted position, with a knob (18) integral with said shaft. Shaft 16 carries a spur gear (20) at its other end, which in the inserted position of the shaft (16) with respect to frame (10) engages a gear wheel (22) integral with a pinion (24) which, cooperating with a rack (56) connected to the usual tuning runner (58) forms a rack and pinion device for positively transmitting movement. A bridge (32) having two arms (30) and (36) engages a tie bar (12), the function of which is to maintain in its operative position one of the preset keys which has been pushed in order to tune in on a station, and this occurs when said shaft ( 16) is in its inserted position; there is, furthermore, an elbow lever (44) which keeps the shaft (16) in its inserted position and is controllable through the usual slider (14) controlling the disengagement of the tuning knob clutch device.
A clutch device, particularly for the manual tuning control in a car radio provided with a key operated tuning memory system, in which a tie bar has the function of keeping any preset keys, pressed to tune in on a station, in its operative position, and in which a control slider for disengaging the knob tuning device has the function of disengaging the knob tuning device when a preset tuning key is operating, comprising:
A clutch device according to calim 2, wherein said holding means comprise an elbow lever, having a first arm which cooperates with a second appendix of said bridge for keeping it in the operative position of said shaft, and a second arm which may be biased by said slider for disengagement of said bridge.
Dependencies are inferred from the claim text.