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US 6,145,855 AGranted
Convertible sulky
AssigneeTrimmer Trap, Inc.
InventorWilliam B. Bellis, Jr.
Life of this patent
Estimating the term…
Abstract
A sulky for transportation of an operator, attachable to a self-propelled vehicle, defines pivot axes, one of which is selectively lockable in order to preclude yaw motion. The sulky also includes caster wheels which are selectively lockable to permit or preclude free castering of said wheels. It also provides stops at the pivot axes for limiting the amount of pivot.
Claims21
A sulky for use behind a self-propelled vehicle, comprising:
- a mounting bracket;
- a connecting arm mounted to the mounting bracket so as to permit the connecting arm to pivot about a first pivot axis relative to the mounting bracket;
- a coupler pivotably mounted to the connecting arm for pivoting about a second pivot axis;
- a platform pivotably mounted to the coupler so as to pivot about a third pivot axis;
- wherein said three pivot axes provide for pitch, roll, and yaw motion;
- and
- aligned locking holes at one of the foregoing mounts and a locking pin receivable in said aligned locking holes to prevent pivoting at that mount, whereby the user may remove the pin in order to provide for pivoting about three axes and may insert the pin to restrict pivoting to two axes.
4 more elements
A sulky for use behind a self-propelled vehicle, comprising:
- a platform;
- at least one wheel supporting said platform;
- a mounting linkage mounted to said platform, including a mounting bracket adapted to be fixed to the self-propelled vehicle, wherein said mounting linkage permits pitch and yaw motion between said platform and the vehicle;
- and a first locking mechanism which, when engaged, locks said mounting linkage so as to prevent the yaw motion.
1 more element
A sulky, comprising:
- a platform;
- first and second caster wheels supporting said platform;
- a forward-to-rear-directed connecting shaft mounted to said platform through a vertical pivot pin to provide yaw motion;
- a connecting arm mounted to said forward-to-rear-directed connecting shaft so as to pivot about a forward-to-rear axis relative to said platform to provide roll motion;
- a bracket mounted to said connecting arm to permit pivoting about a left-to-right horizontal axis between said platform and the vehicle to provide pitch motion;
- and
- a second vertical pin and a pair of cooperating holes, one cooperating hole fixed to said connecting shaft the other cooperating hole fixed relative to said platform, wherein, when said second vertical pin is inserted through said pair of cooperating holes, it prevents said platform from pivoting about a vertical axis relative to said connecting shaft.
4 more elements
A sulky for use behind a self-propelled vehicle, comprising:
- a platform;
- at least one wheel supporting said platform;
- a mounting linkage mounted to said platform, defining three axes of rotation, for providing pitch, roll, and yaw of the platform relative to the vehicle, each of said axes of rotation including a cylindrical member and a body that rotates about the cylindrical member, and further comprising at least one stop limiting the amount of rotation about the cylindrical member;
- wherein said stop includes a pin extending through one of the body and the cylindrical member perpendicular to the axis of rotation and a stop portion of the other of the body and the cylindrical member, wherein, as the body rotates, the pin comes into contact with the stop portion, thereby limiting the amount of rotation of the body about the cylindrical member.
1 more element
Dependencies are inferred from the claim text.