Gear ratio indicator
Patent 4320381 Issued on March 16, 1982. Estimated Expiration Date: 
August 3, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 3, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorAssigneeApplicationNo. 06/063212 filed on 08/03/1979US Classes:340/439, Operation efficiency (e.g., engine performance, driver habits)324/140D, Ratio340/870.06, Plural transmitters (e.g., ratio)434/71, Manipulation of gear shift lever or clutch pedal73/118.2Intake air flowExaminersPrimary: Robinson, Mark A.Attorney, Agent or FirmInternational ClassesF16H 63/00 (20060101)F16H 63/42 (20060101) G01P 3/42 (20060101) G01P 3/60 (20060101) F02B 1/04 (20060101) F02B 1/00 (20060101) F16H 61/04 (20060101) AbstractFor use in combination with "crash type" non-synchronous gear boxes, a gear ratio indicator which not only calculates actual ratio of transmission input shaft speed to output shaft speed, but also compares this determined ratio to the various available gear ratios within the transmission. The actual or determined ratio of input to output speed is then displayed in terms of the available gear ratios so that the operator is provided information as to the precise moment for engaging the transmission and also information as to which gear to engage. | |
