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Scarifier

a technology of scarifier and operator, which is applied in the field of scarifier, can solve the problems of large amount of vibration transferred from the machine to the operator, affecting the operation of the machine, and limiting the mobility of the machine by small wheels, so as to achieve the effect of removing fatigu

Inactive Publication Date: 2012-11-29
SCHROEDER JAMES C +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is a heavy-duty removal of coatings, grooving, grinding and smoothing machine that reduces fatigue and handling fatigue for operators. It is designed to be self-propelled and can be used on both concrete and asphalt surfaces. The machine has a floating head that allows for smooth operation and easy handling. It also has a depth limiter to control the depth of cuts and a point of articulation that allows for smooth operation over uneven surfaces. The machine is equipped with a safety interlock switch to prevent unauthorized start-up. Overall, the invention provides significant reduction in hand / arm vibration, fatigue, and increases control over cutters through the handlebars."

Problems solved by technology

Horizontal rotating cutters with up to 13 HP of grinding / cutting torque produce an extremely fatiguing operator experience.
Large amounts of vibration transferred from the machine to the operator.
The small wheels limit mobility of these machines.

Method used

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Embodiment Construction

[0035]The scarifier of the instant invention is generally designated 10. An articulating cart 12 allows full operation without letting go of handlebars 14 making for easy handling. It also allows feathering and / or maintaining an even cut depth especially over uneven pavement. The point or axis of articulation 16 and length of lever arm produce little or no resistance when applying cutters 18 to the pavement surface 20. It is important to note this point of articulation 16 can be positioned further inward or outward producing a more or less mechanical advantage from the handlebar 14 position.

[0036]The instant invention is provided with a floating head 22 which allows the cutter heads 18 (of known design) to be engaged into cutting surface 20 while the operator has both hands on the handle bars 14 for safety. This also allows the operator to float the cutter 22 over the surface 20 to contour and blend. The mechanism consists of a latching arm 24 with a locking C cutout 26 which engage...

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Abstract

A scarifier is provided with a floating axle 16 which allows the head 22 of the unit to follow the contour of the to-be-ground surface. The floating axle 16 will allow the two large outboard wheels 46 to guide the unit, but still maintain pressure on the smaller guide wheels 50. The floating axle 16 can also be locked to compensate for extremely uneven conditions.

Description

TECHNICAL FIELD[0001]This application claims the benefit of U.S. application Ser. No. 61 / 299,526, filed Jan. 29, 2010, the contents of which are hereby incorporated by reference.BACKGROUND ART[0002]Hand-operated / walk-behind scarifiers are well known for removal of markings and the like from pavement and similar surfaces. Horizontal rotating cutters with up to 13 HP of grinding / cutting torque produce an extremely fatiguing operator experience. Large amounts of vibration transferred from the machine to the operator. The small wheels limit mobility of these machines.DISCLOSURE OF THE INVENTION[0003]The instant invention is used for heavy-duty removal of coatings, grooving, grinding and smoothing. It cleans and prepares surfaces such as concrete and asphalt prior to coating and re-coating. The primary purpose of this design is to remove the fatigue that is typically associated with this type of equipment.[0004]The instant invention allows the ability to be coupled to a propulsion unit s...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E01C23/08
CPCE01C23/08B28D1/045
Inventor SCHROEDER, JAMES C.WEHNER, TIMOTHY J.SHULTZ, MARK D.
Owner SCHROEDER JAMES C
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