초록 ▼

A dual indicating tachometer apparatus for utilization with ground vehicles such as automobiles and trucks for differentiating between the rotational speeds of the engine and clutch shaft of the vehicle. Two sensing devices are utilized with one monitoring the engine rotation speed of the vehicle wh

A dual indicating tachometer apparatus for utilization with ground vehicles such as automobiles and trucks for differentiating between the rotational speeds of the engine and clutch shaft of the vehicle. Two sensing devices are utilized with one monitoring the engine rotation speed of the vehicle while the other monitors the rotational speed of the clutch shaft. Either mechanical dial or digital electronic display means are utilized to expose to the user of such a vehicle the difference between the rotating speeds of the two vehicle elements in order to advise the user of the operating characteristics of the vehicle itself and to facilitate for the user the shifting of the vehicle\s transmission. Means are also provided for displaying the respective rotating speeds of the measured elements as well as for indicating the difference in rotational speeds therebetween.

대표청구항 ▼

A dual-indicating tachometer apparatus for use with a vehicle to differentiate between the rotational speeds of an engine and clutch shaft of said vehicle, said apparatus comprising: first tachometer sensing means operably attached to the engine of said vehicle for monitoring the rotational speed of

A dual-indicating tachometer apparatus for use with a vehicle to differentiate between the rotational speeds of an engine and clutch shaft of said vehicle, said apparatus comprising: first tachometer sensing means operably attached to the engine of said vehicle for monitoring the rotational speed of said engine; second tachometer sensing means operably attached to the clutch shaft of said vehicle for monitoring the rotational speed of said clutch shaft; sensing joinder means at which both said first and second sensing means terminate for co-ordination between said sensing means as well as comparison of said respective rotating values; said joinder means comprising concentric coupling device wherein one of said first or second sensing means is operably attached to an inner coupling portion while said other of said first or second sensing means is operably attached to an outer coupling portion; said outer coupling portion freely rotatable about said inner coupling portion to permit the independent display of said respective rotational speeds through said rotation speed display means; indicating means operably connected to said sensing joinder means for clearly and accurately displaying to a user of said vehicle the differences between the rotational speeds of said engine and clutch shaft thereby assisting and informing said user as to the efficiency of torque transmission from said engine to said clutch shaft for transmission shifting therebetween; rotation speed display means for displaying the actual rotational speeds of both said engine and clutch shaft respectively thereby apprising said user of the respective speeds as well as the difference between speeds; said rotation speed display means comprising a first indicator pointer means attached to said outer coupling portion and a second indicator pointer means attached to said inner coupling portion of said joinder means; each of said first and second indicator pointer means being enclosed with said joinder means in an apparatus housing; each of said first and second indicator pointer means positioned in front of a common calibrated dial, to represent the speeds of said engine and clutch shaft respectively, said indicating means for displaying said differences in speeds comprising an exposed portion of said dial when said first and second indicator pointers are not in alignment and thus when the rotational speeds of said engine and clutch shaft speeds are unequal; said indicating means further comprising spring loaded flag means operably interposed between said first and second indicator pointers, said flag means being increasingly exposed to said user as the difference between said engine and clutch shaft speeds increase to in turn increase the distance between said first and second pointers, and said flag means alternatively capable of being springedly withdrawn as said first and second pointers approach alignment as said engine and clutch shaft rotation speeds approach one-another.