Marine motor transmission
OwnerRobert K. Watsoninventor
Life of this patent
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Abstract
In a propeller driven outboard or inboard-outboard marine motor, the typical transmission comprising a transmission shaft coupled to the propeller shaft by bevel gears is replaced by a chain drive between the propeller shaft and a parallel output shaft coupled to the power plant of the motor. Torque is applied to the chain drive through a torque dependent variable pulley coupled by a belt to a speed dependent variable pulley which allow for a variable gear ratio. A chain tensioning means maintains tension on the chain.
Claims10
A transmission for a propeller driven outboard marine motor comprising the following:
- (a) a speed dependant variable pulley coupled to the output of the power plant of said marine motor;
- (b) a torque dependant variable pulley radially spaced from said speed dependant variable pulley and coupled to a chain or belt driver means;
- (c) an endless belt means interengaging said speed dependant variable pulley and said torque dependant variable pulley;
- (d) a propeller shaft spaced radially from said chain or belt driver means supporting chain or belt driven means;
- (e) endless chain or belt means interengaging said chain or belt driver means and said chain or belt driven means;
- (f) a propeller supported by said propeller shaft;
- (g) a chain or belt tensioning means for maintaining tension on said endless chain or belt means comprising means to urge a cam against generally opposed sides of said endless chain or belt means;
- and
- (h) a housing enclosing said chain or belt driven means.
A transmission for a propeller driven outboard marine motor comprising the following:
- (a) a speed dependent variable pulley coupled to the output of the power plant of said marine motor;
- (b) a torque dependent variable pulley radially spaced from said speed dependent variable pulley and coupled to an output shaft;
- (c) a belt means interengaging said speed dependent variable pulley and said torque dependent variable pulley;
- (d) chain or belt driver means supported for rotation with said output shaft;
- (e) a propeller shaft radially spaced from said output shaft;
- (f) chain or belt driven means supported for rotation with said propeller shaft;
- (g) a propeller supported by said propeller shaft;
- (h) endless chain or belt means operatively associated with said chain or belt driver means and said chain or belt driven means;
- (i) a chain or belt tensioning means for maintaining tension on said endless chain or belt means comprising means to urge a cam against generally opposed sides of said endless chain or belt means;
- and
- (j) a housing enclosing said chain or belt driven means.
Dependencies are inferred from the claim text.