Concrete renovator tool

a renovator and concrete technology, applied in the direction of grinding machines, metal-working apparatuses, plane surface grinding machines, etc., can solve the problems of aggravated worker fatigue, dangerous and uncomfortable ergonomic operation of workers, physical tiring pre-operation, etc., to facilitate the dustless grinding of ceilings and reduce the risk of injury and damage

Inactive Publication Date: 2005-07-21
NORTON MATHEW RAYMUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] This new, useful and inventive step provides the tool with its dust extraction and enhanced workplace safety capabilities.
[0012] The concrete renovator handle is also new, useful and inventive by the fact that, in conjunction with its special design combination, it preforms the new and useful task of ceiling grinding in a dustless, safer and more efficient manner.
[0014] The invention of the concrete grinding tool addresses these problems as it allows the grinder to be held in an upside down fashion in an extended position from the operator, and from the floor. This concrete grinding ceiling tool utilises a special combination design of a concrete grinder handle, bracket, and dustless guard to facilitate the dustless grinding of ceilings. This reduces the risk of injury and damage.

Problems solved by technology

This work method requires a worker to operate in a very dangerous and uncomfortable ergonomic manner.
It is also very physically tiring to preform, as it involves workers standing on a ladder and holding an angle grinder in both arms above their heads, in most cases for hours at a time.
Worker fatigue is exacerbated by the fact that they are also required to continually move and scale ladders, which in many cases are heavy and hard to move as they are of a special safety platform design.
Due to these factors, workers often elect not to use dust extraction, or safety scaffolds (if so provided) as the additional weight of this equipment further handicaps comfortable working operation.
The dust created by this working method also represents a significant inconvenience factor not only to the individuals preforming this very difficult and unpleasant task, but also to the other tradesman working in the near vicinity.
This often results in disruption to building schedules when there becomes a need to clear the floor.
Workers using the existing concrete grinding method very commonly experience painful eye and other injuries from the dislodged grit and sand, which travel at great speed and are very abrasive to the eyes.
Because of the lack of the ability to work from the floor, the grinding of ceilings often takes a significant amount of time to complete and is a significant cost factor for the companies contracted to preform this task.
However these brackets have been designed for large angle grinders and do not possess the appropriate size or special design features of the concrete renovator tool bracket, or concrete renovator pole for the grinding of ceilings.
However, the sanding bracket is not designed for the installation or operational use of a small angle grinder, neither does it have the special dust guard, bracket or handle design combination, required for the purpose of grinding concrete ceilings.
This inventive step came about as a result of two major problems encountered with the flat box handle design.
The first major problem was the weight and drag factor of the long vacuum hose, when secured to the power tool at the upper section of the pole.
This hose drag destabilised the working equilibrium and working alignment capabilities of the bracket and caused difficulties in achieving effective working control.
The second major problem was the regular dislodgement of the bracket.
As the bracket is secured to the flat box handle by only two wing nuts, the vibration of a working machine often caused this bracket to dislodge and land either on the operator or the floor.
This caused a serious likelihood of injury or damage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0026] Turn now to the drawings in general, and in particular to this combination. FIG. 1 of the invention, the metal dustless safety guard is attached to an array of grinders, for the use of diamond cup wheels and stones. The metal dustless safety guard begins with 45° angle junction, located on the dorsal / back side of the guard circumference (1) to facilitate the easy push-on attachment of a 25 mm vacuum hose. Within the top circumference of the guard is the attachment strap (2) that facilitates the attachment of the dustless metal guard to the grinder. The metal safety guard is ringed by a wire brush strip (3), which is located on the bottom outer circumference to facilitate the tool's movement over uneven concrete surfaces, and provide effective dust extraction.

[0027] Thus usage of the first embodiment apparatus of the invention can be employed in accordance with the following guidelines.

[0028] 1. Attach dustless guard to grinder by screw-on bracket attachment.

[0029] 2. Attach...

second embodiment

[0030] this invention in FIG. 2 depicts a swivel grinding bracket that is used to attach and guide a grinder in working alignment on uneven concrete ceiling surfaces. Located in a superior, dorsal position on this swivel bracket is the kidney-shaped head of the swivel bracket (4). This kidney-shaped head configuration allows easy access to the power switch of a grinder, when attached to the bracket. Located in a medial / middle position on this kidney shaped head section of the swivel bracket are two screw holes (5) to allow for the firm attachment of the concrete renovator tool handle.

[0031] Located in FIG. 3 in a lateral / side position on this kidney shaped head section of the swivel bracket, is a safety chain ring (6) this allows for a short safety chain attachment between the concrete grinder handle and swivel bracket, for the purpose of preventing grinder bracket dislodgment and accidents. The swivel bracket has two extending metal attachment ties (7) located on the ventral / front ...

third embodiment

[0036] this invention FIG. 4 shows the concrete grinder swivel guide attachment, which is the second or optional part of the swivel concrete grinder bracket. It provides the bracket with an additional pivoting action feature for the grinding of very uneven concrete surfaces. The grinder swivel bracket guide attachment (9) is attached to the bracket by an axle in a medial, distal, posterior position, which provides the cradle with its pivoting action. The grinder swivel guide attachment FIG. 5 also has sliding leg sections (10), for working alignment adjustments. The grinder swivel guide attachment utilises wheels to assist in mobility (11).

[0037] Thus usage of the third embodiment apparatus of the invention can be employed in accordance with the following guidelines and as shown in FIG. 6.

[0038] 1. Attach the grinder swivel guide attachment to the concrete grinding bracket of grinder by axial bolt for free rotation.

[0039] 2. Adjust the grinder swivel guide attachment sliding leg s...

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Abstract

This invention is a concrete renovator tool with a dust guard, swivel bracket and vacuum handle of special design, for attachment to a small (100 mm-125 mm) angle grinder. By the use of the various pieces and interconnecting designs, the concrete renovator tool allows operators to grind ceilings, in particular, while standing on the floor. It provides for a more efficient and faster method of concrete grinding, and can be used by painters, form workers and drywall contractors to preform a variety of different grinding, sanding and plastering tasks. It allows for a dust-free environment and also results in less workplace injuries.

Description

BACKGROUND AND SUMMARY OF THE INVENTION [0001] Concrete ceiling grinding is a pretexture and painting preparation that is preformed by painting and formwork companies in the building industry. Prior to plastering, rendering or painting of ceilings, grinding is required to remove protruding concrete lines and all other manner of concrete surface imperfections left behind from stripped formwork panel moulds. [0002] Current work place practices utilised by painting and formwork companies, require a worker, who is equipped with eye goggles and dust mask, to a scale a small ladder or trestle and place a small angle grinder in an upside down position onto the concrete ceiling. This work method requires a worker to operate in a very dangerous and uncomfortable ergonomic manner. It is also very physically tiring to preform, as it involves workers standing on a ladder and holding an angle grinder in both arms above their heads, in most cases for hours at a time. Worker fatigue is exacerbated...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B24B7/22B24B23/00B24B55/10
CPCB24B55/10B24B7/22
InventorNORTON, MATHEW RAYMUND
OwnerNORTON MATHEW RAYMUND