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US 5,135,287 AGranted
Curb cutter
OwnerKenneth Karnesinventor
Life of this patent
Estimating the term…
Abstract
A curb cutter for use by a mobile operator comprises a boom having a saw assembly at one end thereof. The boom is user-movable through vertical and lateral directions so as to place the saw at a desired location. The up and down movement of the boom is controlled by a separate cam assembly with lateral movement of the curb cutter being diminished by a ground engaging spike assembly during use. The device allows for the use of various boom lengths according to the job at hand.
Claims16
A concrete sawing machine for attachment to a vehicle comprising:
- a support frame comprising:
- a generally horizontal base frame;
- a mounting frame vertically extending from said base frame;
- fastener means on said mounting frame for releasably engaging a complementary element on the vehicle, said engagement mounting said support frame on the vehicle with said base frame adjacent a ground surface supporting the vehicle;
- an extensible and retractable boom assembly;
- means for hydraulically controlling said extension and retraction of said boom assembly;
- a saw assembly;
- means for mounting said saw assembly to an end of said boom assembly;
- means for hydraulically controlling operation of said saw assembly;
- means upwardly extending from said base frame for pivotally mounting said boom assembly above said base frame in up and down movement relative thereto, said mounted boom assembly displacing said mounted saw assembly beyond said base frame;
- means extending between said support frame and said boom assembly for hydraulically controlling said pivotal movement of said boom assembly, said plurality of hydraulic control means inter-cooperating to position said saw assembly at a desired position displaced beyond said base frame for operation thereat.
8 more elements
A concrete sawing machine for attachment to a vehicle comprising:
- a support frame;
- a boom housing;
- means for hydraulically controlling said extension and retraction of a boom within said housing comprising:
- a piston/cylinder combination having a length varying in proportion to the length of said boom;
- hydraulic flow means in communication with said cylinder for varying the length of extension and retraction of said piston relative to said cylinder;
- and
- means for transmitting said length of extension and retraction of said piston to said boom whereby to control said extension and retraction of said boom relative to said boom housing;
- means for mounting a boom of a selectable length within said boom housing comprising:
- means for mounting a free end of said piston to an end of said boom;
- means for mounting a free end of said cylinder to an end of said boom housing, said means comprising:
- a bracket mounted to said boom housing;
- an arm extending from said bracket and generally in the direction of said boom;
- means for attaching said free end of said cylinder to a free end of said arm, whereby said arm of said bracket extends for a length to allow for said piston/cylinder combination to be mounted between said piston mounting means and said cylinder mounting means, whereby movement of said piston of said intermediate piston/cylinder combination is transmitted to said boom;
- a saw assembly;
- means for mounting said saw assembly to an end of said boom;
- means for controlling operation of said saw assembly;
- means for mounting said boom and housing to said frame in up and down movement relative thereto;
- and
- means for controlling said pivotal movement of said boom.
16 more elements
A concrete sawing machine for attachment to a vehicle comprising:
- a support frame including a horizontal base frame and vertical mounting frame;
- an extensible and retractable boom assembly;
- means for hydraulically controlling said extension and retraction of said boom;
- a saw assembly;
- means for mounting said saw assembly to an end of said boom;
- means for hydraulically controlling operation of said saw assembly;
- a first vertical column attached to said base frame;
- a second vertical column attached to said base frame and spaced from said column;
- an arm extending between said first and second columns;
- means for attaching a pivot pin between said columns and above said base frame;
- means for attaching said boom assembly to said pivot pin in pivotal movement relative thereto and in up and down movement relative to said base frame;
- means on said support frame for hydraulically controlling said pivotal movement of said boom assembly;
- means for dampening lateral movement of said support frame during said saw assembly operation.
10 more elements
A concrete sawing machine for attachment to a vehicle comprising:
- a support frame;
- an extensible and retractable boom assembly;
- means for controlling said extension and retraction of said boom assembly;
- a saw assembly;
- means for mounting said saw assembly to an end of said boom;
- means for hydraulically controlling operation of said saw assembly;
- means for pivotally mounting said boom assembly to said frame in up and down movement relative thereto;
- means for controlling said pivotal movement of said boom comprising:
- a cam having first and second ends;
- means for pivotally mounting said first end of said cam in counterclockwise and clockwise movements relative to said boom assembly;
- hydraulic means on said support frame for directing said cam in said movements and into and out of engagement with said boom assembly, said cam movements controlling said up and down movement of said boom assembly relative to said support frame.
8 more elements
A concrete sawing machine for attachment to a vehicle comprising:
- a support frame;
- an extensible and retractable boom assembly;
- means for controlling said extension and retraction of said boom assembly;
- a saw assembly;
- means for mounting said saw assembly to an end of said boom;
- means for controlling operation of said saw assembly;
- means for pivotally mounting said boom assembly to said frame in up and down movement relative thereto;
- means for controlling said pivotal movement of said boom;
- means for dampening lateral movement of said frame during said saw assembly operation, said means comprises:
- a spike assembly;
- means for selectably mounting said spike assembly to said frame in a ground engaging position during said saw assembly operation, said ground engagement diminishing lateral movement of said frame.
8 more elements
Dependencies are inferred from the claim text.