Dipstick assemblies for material handling equipment

Claim 1

IN A MATERIAL HANDLING MACHINE HAVING A BOOM EXTENDING THEREFROM AND HAVING AN IMPLEMENT, A DIPSTICK ASSEMBLY COMPRISING A RELATIVELY SHORT PIVOT FRAME CARRIED ON A TRANSVERSE PIVOT ON THE OUTER END OF SAID BOOM, POWER MEANS CONNECTED BETWEEN SAID BOOM AND SAID PIVOT FRAME TO TILT THE LATTER, A DIPSTICK CARRIED IN SAID PIVOT FRAME AND PROJECTING FROM BOTH ENDS THEREOF FOR LONGITUDINAL SLIDING TRAVEL AND ROTATION THEREIN AND CARRYING SAID IMPLEMENT AT AN END THEREOF, SAID PIVOT FRAME INCLUDING A PAIR OF SPACED BEARING RINGS SURROUNDING THE EXTERIOR OF SAID DIPSTICK IN LONGITUDINALLY SPACED RELATIONSHIP THEREALONG, DIPSTICK SUPPORTED DISCS JOURNALLED IN SAID RINGS AND HAVING APERTURES SLIDABLY AND NON-ROTATABLY GUIDING SAID DIPSTICK FOR ITS SLIDING MOVEMENT, POWER MEANS CONNECTED BETWEEN ONE OF SAID DISCS AND SAID DIPSTICK TO MOVE THE LATTER LONGITUDINALLY RELATIVE TO SAID DISCS, AND POWER MEANS LOCATED CLOSE TO THAT END OF THE BOOM WHICH SUPPORTS THE DIPSTICK AND CONNECTED BETWEEN SAID PIVOT FRAME AND ONE OF SAID DISCS THROUGH WHICH THE DIPSTICK SLIDES TO ROTATE THE LATTER AND SAID DIPSTICK WITH RESPECT TO THE PIVOT FRAME.