초록 ▼

An apparatus is provided for specifically exercising the lower abdominal muscles, upper abdominal muscles, or both the lower and upper abdominal muscles together in combination of a human user. The apparatus includes a frame which accommodates the upper torso of a user and a resistance member pivota

An apparatus is provided for specifically exercising the lower abdominal muscles, upper abdominal muscles, or both the lower and upper abdominal muscles together in combination of a human user. The apparatus includes a frame which accommodates the upper torso of a user and a resistance member pivotally connected to the frame on a latitudinal axis. The resistance member is capable of pivotal rotation about the axis, and includes a mechanism for varying the resistance of such pivotal rotation. As such, the knees of the user can be raised and lowered above horizontal without interference.

대표청구항 ▼

An apparatus is provided for specifically exercising the lower abdominal muscles, upper abdominal muscles, or both the lower and upper abdominal muscles together in combination of a human user. The apparatus includes a frame which accommodates the upper torso of a user and a resistance member pivota

An apparatus is provided for specifically exercising the lower abdominal muscles, upper abdominal muscles, or both the lower and upper abdominal muscles together in combination of a human user. The apparatus includes a frame which accommodates the upper torso of a user and a resistance member pivotally connected to the frame on a latitudinal axis. The resistance member is capable of pivotal rotation about the axis, and includes a mechanism for varying the resistance of such pivotal rotation. As such, the knees of the user can be raised and lowered above horizontal without interference. pelling said vehicle on land; a propellor capable of propelling said vehicle in water; a motor; a transfer case rotatably coupled to said motor and having at least one wheel drive output and a propellor drive output; an engaging mechanism located between said transfer case and the propellor, said engaging mechanism allowing a vehicle operator to selectively engage said propellor between a rotating position and a non-rotating position; a continuously running drive shaft extending from said propellor drive output aft of said transfer case to said engaging mechanism; and a second drive shaft extending from said engaging mechanism for selectively rotating or not rotating said propellor. 5. The drive train of claim 4, further including a third output from said transfer case driving a second set of wheels. 6. The drive train of claim 4, wherein said engagement mechanism is located aft of said transfer case. 7. A drive train for an amphibious vehicle, said amphibious vehicle having a motor, a transmission coupled with the motor, a propellor and front and rear axles, the drive train comprising: a transfer case; a transmission output drive shaft rotatably coupling said transmission with the transfer case, wherein the transmission output drive shaft provides rotational power to the transfer case from said motor and wherein the transmission output drive shaft is selectively rotatable via said transmission; a front wheel drive shaft, wherein the front wheel drive shaft rotatably couples the transfer case to said front axle, wherein the front wheel drive shaft is a rotational output from the transfer case, and wherein the front wheel drive shaft provides rotational power to said front axle to propel the amphibious vehicle when on land; a rear wheel drive shaft, wherein the rear wheel drive shaft rotatably couples the transfer case to said rear axle, wherein the rear wheel drive shaft is a rotational output from the transfer case, and wherein the rear wheel drive shaft provides rotational power to said rear axle to propel the amphibious vehicle when on land; and a propellor output drive shaft, wherein the propellor output drive shaft rotatably couples the transfer case to said propellor, wherein the propellor output drive shaft is a rotational output from the transfer case, and wherein the propellor output drive shaft provides rotational power to said propellor to propel the amphibious vehicle when in water; and wherein the front wheel drive shaft, the rear wheel drive shaft and the propellor output drive shaft are all continuously rotating at all times when the transmission output drive shaft is rotating. 8. The drive train of claim 7, further comprising: a disengaging assembly, wherein the disengaging assembly is positioned intermediate the transfer case and said propellor, wherein the disengaging assembly is rotatably coupled with the transfer case via the propellor output drive shaft, and wherein the disengaging assembly permits a user to selectively couple said propellor with the propellor output drive shaft. 9. The drive train of claim 8, further comprising: a propellor gearbox, wherein the propellor gearbox is positioned intermediate the disengaging assembly and said propellor, wherein the propellor gearbox transfers rotational power from the propellor output drive shaft to said propellor when the disengaging assembly is in an engaged position, wherein propellor gearbox has a plurality of mating gears having a gear ratio, and wherein the gear ratio is such that an output of the propellor gearbox rotates faster than the propellor output drive shaft. 10. The drive train of claim 9, wherein gear ratio is such that said propellor propels said amphibious vehicle when in water at approximately a same speed as the front and rear wheel drive shafts propel said amphibious vehicle when on land. 11. The drive train of claim 7, further comprising: a propellor gearbox, wherein the propellor gearbox is positioned int