U.S. patent application number 10/671920 was filed with the patent office on 2005-04-14 for stripping tool for the removal of paint, fiberglass, epoxy, and resin from two surfaces simultaneously.
Invention is credited to Zayat, Charles Christopher, Zayat, Charles Dimitry.
Application Number | 20050079809 10/671920 |
Document ID | / |
Family ID | 34422014 |
Filed Date | 2005-04-14 |
United States Patent
Application |
20050079809 |
Kind Code |
A1 |
Zayat, Charles Dimitry ; et
al. |
April 14, 2005 |
Stripping tool for the removal of paint, fiberglass, epoxy, and
resin from two surfaces simultaneously
Abstract
This invention is a tool for simultaneously resurfacing by
cutting the face and overlying butt portions of shingles or
clapboards forming the outside surface of a house or the like. The
tool is mounted in a rigid guard housing/dust collector that allows
for adjustment of the cutting blades to both surfaces and provides
an attachment for work debris removal
Inventors: |
Zayat, Charles Dimitry;
(Cranston, RI) ; Zayat, Charles Christopher;
(Cranston, RI) |
Correspondence
Address: |
Maurice M. Lynch
479 Church Avenue
Warwick
RI
02889
US
|
Family ID: |
34422014 |
Appl. No.: |
10/671920 |
Filed: |
September 25, 2003 |
Current U.S.
Class: |
451/359 ;
451/456 |
Current CPC
Class: |
B44D 3/16 20130101; B08B
1/04 20130101 |
Class at
Publication: |
451/359 ;
451/456 |
International
Class: |
B24B 023/00; B24B
027/08 |
Claims
We claim:
1. We claim a rotary tool for resurfacing or removal of lead paint
from two work surfaces simultaneously such as painted shingles or
clapboard walls, defining a generally flat oriented surface and an
adjacent overlying horizontal of perpendicularly oriented minor
surface or butt end; said tool consists of three major components:
a. A rotating bar style holder with two replaceable blades, said
bar holder is attached onto a drive shaft of a motor drive b. A
rigid guard housing/dust collector which encloses the rotating bar
holder and provides protection for the operator and a connection to
a vacuum system c. A vacuum source
2. A combination rigid guard/dust-collecting device, as described
in claim one, encapsulating and adjusting the blade exposure for a
bar style blade holder that simultaneously resurfaces the two
adjacent surfaces of clapboards or shingles comprising: a. an
attachment means for connecting said rigid guard/dust-collecting
device to a motor drive providing power to the bar style blade
holder; b. a rigid chamber means to encompass the bar style blade
holder and provide an attachment means to a vacuum source to remove
debris from the work surface, while providing openings for the
cutting, grinding or sanding edges to prepare the said surfaces; c.
an adjustment means fixed to the rigid chamber to control the
amount of depth of the cutting device to the horizontal surface
being treated; d. an adjustment means fixed to the rigid chamber to
control the amount of depth of the cutting device to the vertical
surface being treated.
3. A rotary tool as described in claim one, where the rotating bar
style holder is designed to hold two replaceable cutting blades at
a 1-20 degree angle off the perpendicular where the top end of the
replaceable blade is away from the direction of rotation and the
point of the blade that meets the horizontal work surface is facing
towards the direction of rotation and the flat surface of the blade
is parallel to the butt end of the clapboard or shingle;
4. Two replaceable blades as described in claim three that are in a
planar parallelogram shape so that when there are inserted in the
bar style holder, the point of the blade is directed at the
generally flat oriented surface and the straight edged side is
parallel to the butt end of the shingle or clapboard to be
resurfaced
Description
BACKGROUND AND OBJECTS OF THE INVENTION
[0001] There are many methods such heat, chemicals, various tools
for stripping paint and coatings from wood, fiberglass, steel,
resin surfaces. Electric heat plates and open flames are dangerous
and could cause fires. Additionally, where lead paint and pressure
treated lumber is involved, heavy metals can be released into the
environment and health risks ensue. Chemicals are time consuming
and expensive requiring neutralization of the stripped surface.
Another method such as abrasive sheets (sandpaper) uses friction
and abrasion of hard particulate matter against the coating to be
removed. Such removal method causes clogging of the sandpaper, down
time, and sandpaper replacement at a considerable cost. Other
methods used are manual wire brushing and manual scraping, both are
labor intensive and can cause damage to the wood, fiberglass,
steel, and resin surfaces.
[0002] With regard to the removal of lead paint and other surfaces
where heavy metals and other toxic substances are involved, many
methods are unavailable due to the release of paint dust and chips
into the environment.
[0003] This device seeks to allow the operator to resurface close
into confining areas of a work surface such as butt ends of
shingles and clapboards, into side areas around door and window
trim while simultaneously working two surfaces and simultaneously
removing resurfacing debris.
[0004] There are many prior art rotary-resurfacing tools on the
market, but they are cumbersome to handle and are unable to clean
coatings from corner areas next to window or doorframes. Some
examples are discussed below.
[0005] The Zayat U.S. Pat. No. 4,554,957 Rotary Resurfacing Tool
claims a device cable of resurfacing two surfaces with a rotary
disc. The tool is also designed to simultaneously to remove a
coating from the horizontal surface and underside or butt end of
shingles or clapboard.
[0006] Courson, U.S. Pat. No. 5,609,516, claims a power tool with
abrasive sheets enclosed by a circular shroud covering. The shroud
covers the abrasive sheets allowing the collection of dust by a
vacuum system.
[0007] Duncan, U.S. Pat. No. 5,791,979, claims a vacuum shroud
covering a grinding tool. The flexible bonnet surrounding the
grinding disc allows for the collection of stripped debris into a
vacuum.
[0008] Stewart, U.S. Pat. No. 6,027,399, claims a grinding tool
accessory shroud for containing and removing dust into a vacuum.
The grinding tool accessory has flexible bristles with two
chambers, the inner chamber collects the dust and the outer chamber
flexes for contoured portions of a work surface.
[0009] Tanner, U.S. Pat. No. 4,765,099, claims a sanding and dust
collecting apparatus that consists of a flexible curtain for
containment of dust around a sanding disc.
[0010] Dehde et al., U.S. Pat. No. 6,148,880, describes a flat
surface-milling machine with two or more cutters, but no dust
removal system and it can only grind on surface at a time.
[0011] Partington, U.S. Pat. No. 4,337,811, Walsh, U.S. Pat. No.
3,731,338, and Schultze, U.S. Pat. No. 6,190,09 all describe
circular rotary planers or grinders with no ability to
simultaneously grind tow surfaces and no dust removal system.
[0012] Sarantits, U.S. Pat. No. 6,491,575, describes a rotary tool
with replaceable blades that can resurface two surfaces
simultaneously, a semi rigid guard and it does have a dust
collection system. The cutting depth of the horizontal work surface
is set by ball bearings and the dust collection system is a shroud
surrounding the entire work surface. This differs from the
invention in this application in that the vacuum/dust collection
system is part of the rigid guard housing and because of this
design, the operator is able to get closer into corners, the tool
is less cumbersome and reduces operator fatigue.
[0013] This rotary stripping tool is designed to meet several
objectives. The rigid guard housing/dust collector combines the
function of two parts on other tools, a guard and a dust-collecting
shroud. The bottom of the rigid guard housing/dust collector is set
at a slight offset angle of ten degrees. This and the height
adjustment screw allow the operator to set the optimal cutting
depth for the horizontal surface. Likewise, the side adjustment
screw seated on the rigid guard housing/dust collector maximizes
space utilization on the tool. Finally, using only two blades on
the bar style holder, weight and drag are minimized allowing a
smaller, lighter motor to be used with the tool.
[0014] In short, the weight reduction in this tool, the ability to
reach further into tight corners and the ability to simultaneously
work two surfaces reduces operator fatigue and accomplishes more
stripping than other devices.
SUMMARY OF THE INVENTION
[0015] The present invention provides a means of stripping and
removing paint and debris from shingles or clapboard. While other
devices claim to do the same, this invention is a clear improvement
over those devices in that it easily fits into corners, presents a
smaller head area to the surface and contains less moving parts so
to improve it movement and to reduce operator fatigue.
DESCRIPTION OF THE INVENTION
[0016] The drawings, FIGS. 1-6, illustrate the best mode of the
invention presently contemplated. In the drawing all of the same
elements are labeled with the same number.
[0017] FIG. 1 is and exploded side view of the invention paint
remover and resurfacing tool showing the novel rigid guard
housing/dust collector, bar style holder and motor drive.
[0018] FIG. 2 is a side view of FIG. 1 showing the adjustment screw
for depth adjustments to stripping action for horizontal
surface.
[0019] FIG. 3 is the underside view showing the bar style blade
holder inside the rigid guard housing/dust collector with the bar
style blade holder positioned so the invention can strip adjacent
vertical surfaces and into corners. Adjustment screw head 33 is
located next to the opening of the rigid guard housing/dust
collector for vertical adjacent surfaces.
[0020] FIG. 3A is the view showing the top opening of the rigid
guard/dust collector for resurfacing the butt end of shingles or
clapboard. The bar style blade holder, blade and height and side
adjustment screws are visible.
[0021] FIG. 4 shows the stripping tool removing coating off shingle
with the hose attachment for removing stripped paint and coating
into a vacuum source.
[0022] FIG. 5 shows the invention stripping on the main/horizontal
surface up to a window or doorframe on the right side of the
operator FIG. 6 is the invention stripping the surface of clapboard
to a window or doorframe located to the left of the operator.
DETAILED DESCRIPTION OF THE DRAWINGS
[0023] FIGS. 1, 2, 3, 3A, 4, 5 and 6 show the device 2 of the
present invention, which is hand-held and placed against wood
singles or clapboard, fiberglass or metal surfaces.
[0024] FIG. 1 is an exploded side view of the device 2, which
comprises an electric drive motor 6 with a 90-degree angled drive
shaft 8 connected to a bar style blade holder 10 with two
replaceable blades 12. A base plate 18 is attached to the motor
drive 6 with two long screws 24 and two short screws 24A with four
bushings 16 of equal size and a spacer washer 28. With the two long
screws 24, two more bushings 16A are used as spacers for attaching
the top 4A of the rigid guard housing/dust collector. The top 4A of
the rigid guard housing/dust collector has a vacuum hose attachment
7. The top of the rigid guard housing dust collector is attached by
means of four screws, not shown, to the rigid guard housing/dust
collector 4. The rigid guard housing/dust collector has both a top
opening and a bottom opening. The horizontal adjustment screw 14
allows the operator to adjust the depth of the blades to the
horizontal surface of the surface to be resurfaced.
[0025] FIG. 2 is a side view of the device 2 showing the motor
drive 6 with the 90-degree driveshaft unit. The horizontal
adjustment screw 14 and the lock nut 20 and their relation to the
base plate 18 and the rigid guard housing/dust collector 4 are
visible. When the horizontal adjustment screw 14 is turned, the
side of the rigid guard housing/dust collector will move up and
down with respect to the fixed base plate 18 and bar style blade
holder inside the rigid guard/dust-collector 4, controlling the
protrusion of the blades 12 below the rigid guard housing 4.
[0026] FIG. 3 is a view looking up into the bottom opening of the
rigid guard housing/dust collector 4. The heads of the base plate
mounting screws 24 are visible and the horizontal adjustment screw
14 on the opposite side is visible. The bar style blade holder 10
with its angled slots for the replaceable blades 12 is also
displayed. The angled slots hold the blades in such a way that
little of the blade point touches the horizontal surface to be
treated. This reduces drag and effort on the part of the operator.
The side adjustment screw 33 is also visible and this adjusts the
amount of blade surface touching the butt end of a shingle or
clapboard being resurfaced. The cut-away view shows the plenum
chamber in the rigid guard dust collector leading to the vacuum
attachment.
[0027] FIG. 3A is the view of the top opening of the rigid guard
housing/dust collector. Visible is the bar style blade holder 10
with the angled replaceable blade 12. The side adjustment screw 33
and the height adjustment screw located inside the lock nut 20 are
visible. The top opening has a carriage bolt adjustment screw 33
adjacent to it to allow the operator to adjust the amount of depth
the side edges of the replaceable blades 12 to meet the butt end of
a clapboard or shingle for resurfacing. The bottom of the rigid
guard housing/dust collector has a ten-degree slope from the side
of the side adjustment screw angling up to the opposite side. This
allows the tips of the replaceable blades 12 in the bar style blade
holder 10 to protrude from the circular opening for 180 degrees of
arc. This ten-degree angle and A horizontal line 44 is displayed to
give a reference point for the ten degree sloped bottom of the
rigid guard housing/dust collector 4. An arc with arrows is also
displayed to show the rotation of the rigid guard housing/dust
collector 4 in relation to the height adjustment screw 14 and the
replaceable blades 12.
[0028] FIG. 4 is a view of the device in operation removing coating
16 from the surface 22. The rigid guard housing/dust collector 4 is
placed on the top of a course of shingle or clapboard with the open
side of the rigid guard housing/dust collector 4 placed against the
short butt end of the shingle or clapboard 34. The side adjustment
screw 33 is also placed against the butt end of the work surface 22
so that two surfaces can be worked simultaneously and the resulting
debris can be removed.
[0029] FIG. 5 shows the device 2 removing coating 16 on surface 22
when the device comes next to an adjacent window or door trim 30
located to the right of the device.
[0030] FIG. 6 shows the device removing coating 16 from surface 22
when it comes to trim 30 located to the left of the device. Note
that the side opening of the rigid guard housing/dust collector is
next to the trim.
[0031] While there is shown and described herein certain specific
structures embodying the invention, it will be obvious to those
skilled in the art that various modifications and rearrangements of
the parts may be made with departing from the spirit and scope of
the underlying inventive concept and that the same is not limited
to the particular forms herein shown and described except insofar
as indicated by the scope of the appended claims.
* * * * *