Patent ID: 11946208
Assignee: LIGCHINE INTERNATIONAL CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 15:
16. An apparatus for screeding concrete to produce a level finished surface comprising:
a frame assembly having a front end and rear end, said frame assembly having a pair of spaced vertically oriented stabilization legs secured to the front end thereof, said spaced legs supporting a generally horizontal arcuate front member therebetween, and at least one stabilization leg secured to the rear end thereof, each of said stabilization legs having a leveling actuator secured thereto for adjusting an elevation of said frame and thereby a screed head;
an extendable boom assembly having front and rear ends, and an exterior boom section pivotably secured to said frame assembly proximate said rear end thereof and to the screed head at said front end;
a boom mounting plate secured to said exterior boom section and disposed between said exterior boom section and said front member;
a plurality of roller elements mounted for rotation to said boom mounting plate wherein said roller elements contact said front member, thereby permitting said boom to move laterally;
a backing plate disposed below said boom mounting plate and secured in spaced relation thereto;
a wear pad secured to said backing plate between said backing plate and an underside of said horizontal member, whereby said backing plate contacts said horizontal member; and
an actuator with an extendable arm thereon, said actuator secured at a point to said front member; and said extendable arm secured to said boom mounting plate to impart generally lateral motion to said boom.