Push-button tuner

专利名称：Push-button tuner发明人：Tamaki Ohashi申请号：US06/660931申请日：19841015公开号：US04635490A公开日：19870113

摘要：Disclosed is a push-button tuner in which two desired preset broadcastingfrequencies can be tuned in by one push-button. The push- button tuner comprises aplurality of tuning mechanisms each constituted by an operation shaft, and a pair oftuning shafts disposed on the opposite sides of the operation shaft. These operationshaft and tuning shafts are supported movably between the front non-actuation positionand the rear actuation position, the operating shaft being provided with a drive gear, achange-over mechanism for alternatively alternately causing the pair of tuning pieces tomove relative to the operation shaft to the rear actuation position every one

reciprocation of the operation shaft between the front non-actuation position and therear actuation position, and an enlarging mechanism for enlarging the amount of movingstroke of the operation shaft member and for transmitting the enlarged amount ofmoving stroke to one of the tuning member which is in its movable state. Each of thetuning shafts includes a driven gear which engages with the drive gear when the tuningshaft is moved to the front non-actuation position, and a tuning piece which is axiallymovable in response to the rotation of the tuning shaft. The tuning piece selects thefrequency of the variable element in response to the axial movement of the tuning shaft.

申请人：NIHON TECHNICAL KABUSHIKI KAISHA

代理人：Robert E. Burns,Emmanuel J. Lobato,Bruce L. Adams

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