Power unit swinging type motor cycles
First Claim
Patent Images
1. A motorcycle, comprising:
- a body frame;
an engine swingably hung on said body frame;
a pair of right and left plates forming a rear fork connected in the front end portions thereof to said engine;
a rear wheel axle supported between the rear end portions of said pair of right and left plates;
power transmitting means for transmitting power from said engine to said rear wheel axle;
shock absorbers connected between said body frame and said pair of right and left plates whereby said engine, said rear fork, said rear wheel axle, and said power transmitting means swing as a unit relative to said body frame of said motorcycle;
a concavity made in their intermediate portion of one of said rear fork plates; and
an ignition coil housed and secured in said concavity.
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Abstract
A swinging power unit type motorcycle having an engine swingably hung and pivoted on a body frame, and a pair of plates forming a rear fork connected to the engine. A chain drive transmits power from the engine to a reduction gearbox which incorporates the rear wheel axle and is supported between the rear fork. Shock absorbers are connected between the body frame and the rear fork. The engine, rear fork, rear wheel axle, chain drive, and reduction gearbox are interconnected to swing as a unit relative to the body frame.
35 Citations
17 Claims
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1. A motorcycle, comprising:
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a body frame; an engine swingably hung on said body frame; a pair of right and left plates forming a rear fork connected in the front end portions thereof to said engine; a rear wheel axle supported between the rear end portions of said pair of right and left plates; power transmitting means for transmitting power from said engine to said rear wheel axle; shock absorbers connected between said body frame and said pair of right and left plates whereby said engine, said rear fork, said rear wheel axle, and said power transmitting means swing as a unit relative to said body frame of said motorcycle; a concavity made in their intermediate portion of one of said rear fork plates; and an ignition coil housed and secured in said concavity. - View Dependent Claims (2)
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3. A motorcycle comprising:
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a body frame; an engine swingably hung on said body frame; a pair of right and left plates forming a rear fork connected in the front end portions thereof to said engine; a rear wheel axle supported between the rear end portions of said pair of right and left plates; power transmitting means for transmitting power from said engine to said rear wheel axle; shock absorbers connected between said body frame and said pair of right and left plates whereby said engine, said rear fork, and said power transmitting means swing as a unit relative to said body frame of said motorcycle; and an air cleaner, said air cleaner including a hollow vertically elongated, box-shaped body mounted between said plates, an air cleaner element mounted within said body, said element sectioning said body into a first, upper chamber communicating with a suction port of a carburetor of said motorcycle, and a second, lower chamber communicating with outside atmosphere, said second chamber being larger than said first chamber.
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4. A swinging power unit type motorcycle, comprising:
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a body frame; an engine swingably hung on said body frame; a pair of right and left plates forming a rear fork connected in the front end portions thereof to said engine; a rear wheel axle supported between the rear end portions of said pair of right and left plates; power transmitting means for transmitting power from said engine to said rear wheel axle; a hollow box-shaped air cleaner case mounted between said plates; said air cleaner case being formed by a vertically extending elongated body and being sectioned intermediately by an air cleaner element; a first chamber being formed in the upper part of said air cleaner case sectioned by said air cleaner element; a second chamber being formed in the lower part of said air cleaner case sectioned by said air cleaner element, said second chamber being larger than said first chamber; and shock absorbers connected between said body frame and said pair of right and left plates whereby said engine, said rear fork, said rear wheel axle, and said power transmitting means swing as a unit relative to said body frame of said motorcycle. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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11. A swinging power unit type motorcycle comprising:
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a body frame; an engine swingably hung on said body frame; a pair of right and left plates forming a rear fork connected in the front end portions thereof to said engine; a rear wheel axle supported between the rear end portions of said pair of right and left plates; power transmitting means for transmitting power from said engine to said rear wheel axle; an air cleaner case having a vertically extending elongated body mounted between said plates; shock absorbers connected between said body frame and said pair of right and left plates whereby said engine, said rear fork, said rear wheel axle, and said power transmitting means swing as a unit relative to said body frame of said motorcycle; said body of said air cleaner case being sectioned by an air cleaner element into a first chamber communicating with a carburetor of said engine and a second chamber communicating with a suction tube; and said second chamber being larger than said first chamber.
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12. A swinging power unit type motorcycle comprising:
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a body frame; a reduction gearbox; means for pedaling said motorcycle; an engine swingably hung on said body frame; a pair of right and left plates forming a rear fork connected in the front end portions thereof to said engine; a rear wheel axle supported between the rear end portions of one of said pair of right and left plates; said reduction gearbox being mounted to the rear end of the other of said pair of plates and operatively connected to said rear wheel axle; power transmitting means for transmitting power from said engine and from said pedaling means to said rear wheel axle; a hollow box-shaped air cleaner case arranged between said right and left rear fork plates and made integral with said fork plates; shock absorbers connected between said body frame and said pair of right and left plates whereby said engine, said means for pedaling said motorcycle, said rear fork, said rear wheel axle, and said power transmitting means swing as a unit relative to said body frame of said motorcycle; said air cleaner case being formed to be vertical and being sectioned intermediately by an air cleaner element; a chamber formed in the upper part of said air cleaner case sectioned by said air cleaner element; and a chamber formed in the lower part of said air cleaner case sectioned by said air cleaner element, said lower chamber of said air cleaner case being larger than said chamber formed in said upper part of said air cleaner case. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification