Jib assembly
AssigneeMantsinen Group Ltd Oy
InventorsPekka GRÖHN, Pentti LAAKKONEN, Simo HUOVINEN
Life of this patent
Estimating the term…
Abstract
A jib assembly includes a support; a jib attached pivotally to the support for pivotal movement of the jib in relation to the support about a horizontal axis; a first linear hydraulic actuator attached to the support for regulating pivotal movement of the jib and for maintaining the jib in a specific position relative to the support; a lever arm attached unrotatably to the jib; and a draw member attached to the lever arm and to the jib; wherein the first linear hydraulic actuator is attached to the lever arm, and the lever arm is arranged to extend in the direction above the jib.
Claims9
-8. (canceled)
A jib assembly comprising:
- a support;
- a jib pivotally attached to the support for pivotal movement of the jib in relation to the support about a horizontal axis;
- and
- a first linear hydraulic actuator attached to the support for regulating pivotal movement of the jib and for maintaining the jib in a specific position relative to the support;
- a lever arm unrotatably attached to the jib;
- and
- a draw member unrotatably attached to the lever arm and to the jib;
- wherein:
- the first linear hydraulic actuator is connected to the draw member so that a force generated by the first linear hydraulic actuator is transmitted to the draw member;
- the first linear hydraulic actuator and the draw member are supported by the lever arm;
- and
- the lever arm is arranged to extend in the direction above the jib.
Dependencies are inferred from the claim text.