U.S. patent application number 13/778806 was filed with the patent office on 2013-08-29 for abrasive pad assembly.
The applicant listed for this patent is Raymond Vankouwenberg. Invention is credited to Raymond Vankouwenberg.
Application Number | 20130225051 13/778806 |
Document ID | / |
Family ID | 49003360 |
Filed Date | 2013-08-29 |
United States Patent
Application |
20130225051 |
Kind Code |
A1 |
Vankouwenberg; Raymond |
August 29, 2013 |
ABRASIVE PAD ASSEMBLY
Abstract
An abrasive pad assembly, for use with a surfacing machine,
includes a circular pad member and a diamond abrasive member. The
circular pad member includes an exterior surface and the diamond
abrasive member is affixed to the exterior surface of the circular
pad member. The diamond abrasive member includes an insert and a
diamond abrasive material. The insert has a first surface affixed
to the exterior surface of the circular pad member. The diamond
abrasive material is a polycrystalline diamond substance that is
affixed to the second surface of the insert. The polycrystalline
diamond material is spaced apart from the exterior surface of the
circular pad member.
Inventors: |
Vankouwenberg; Raymond;
(Osprey, FL) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Vankouwenberg; Raymond |
Osprey |
FL |
US |
|
|
Family ID: |
49003360 |
Appl. No.: |
13/778806 |
Filed: |
February 27, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61603676 |
Feb 27, 2012 |
|
|
|
Current U.S.
Class: |
451/350 ;
451/529; 451/539 |
Current CPC
Class: |
B24B 7/186 20130101;
B24D 11/02 20130101; B24D 7/066 20130101; B24B 23/00 20130101; B24D
13/147 20130101 |
Class at
Publication: |
451/350 ;
451/539; 451/529 |
International
Class: |
B24D 11/02 20060101
B24D011/02; B24B 23/00 20060101 B24B023/00 |
Claims
1. An abrasive pad assembly for use with a surfacing machine to
surface a floor, said abrasive pad assembly comprising: a pad
member having an exterior surface, said pad member formed of a
nonwoven material; and a diamond abrasive member having an insert
and a diamond abrasive material, said insert having a first surface
and an opposite second surface, said first surface being affixed to
said exterior surface of said pad member, and said diamond abrasive
material is affixed to said second surface of said insert.
2. The abrasive pad assembly of claim 1, wherein said diamond
abrasive material is a polycrystalline diamond substance.
3. The abrasive pad assembly of claim 2, wherein said
polycrystalline diamond substance is spaced apart from said
exterior surface of said pad member by a thickness of said
insert.
4. The abrasive pad assembly of claim 3, wherein said diamond
abrasive member is a plurality of diamond abrasive members, said
plurality of diamond abrasive member are affixed to said exterior
surface of said circular pad member.
5. The abrasive pad assembly of claim 4, wherein said pad member is
formed of an intermediate member positioned between a pair of pad
members formed of a nonwoven material, said intermediate member
having a rigidity that is greater than a rigidity of said pair of
pad members, each of said pair of pad members having an inner
surface affixed to said intermediate member, and one of said pair
of pad members having an exterior surface opposite said inner
surface, said exterior surface having said plurality of diamond
abrasive members affixed thereto.
6. The abrasive pad assembly of claim 5, wherein said pad member is
formed having a generally circular shape, said pad member includes
a circumferential outer peripheral edge bounding said exterior
surface, and wherein said plurality of diamond abrasive members are
provided adjacent said circumferential outer peripheral edge.
7. The abrasive pad assembly of claim 6, wherein said plurality of
diamond abrasive members are formed having a regular uniform shape,
and wherein said plurality of diamond abrasive members are equally
spaced adjacent said circumferential outer peripheral edge.
8. The abrasive pad assembly of claim 7, wherein each of said
plurality of diamond abrasive members have a uniform circular
shape.
9. The abrasive pad assembly of claim 6, wherein a secondary ring
of equally spaced diamond abrasive members is positioned between
said plurality of diamond abrasive members adjacent said
circumferential outer peripheral edge and a center of said pad
member.
10. A surfacing machine for surfacing a floor comprising: a motor;
a pad member having an exterior surface, said motor operates to
actuate said pad member to perform the surfacing operation; a
diamond abrasive member having an insert and a diamond abrasive
material, said insert having a first surface and an opposite second
surface, said first surface being affixed to said exterior surface
of said pad member, and said diamond abrasive material is affixed
to said second surface of said insert.
11. The surfacing machine of claim 10, wherein said diamond
abrasive material is a polycrystalline diamond substance.
12. The surfacing machine of claim 11, wherein said polycrystalline
diamond substance is spaced apart from said exterior surface of
said pad member by a thickness of said insert.
13. The surfacing machine of claim 12, wherein said diamond
abrasive member is a plurality of diamond abrasive members, said
plurality of diamond abrasive member are affixed to said exterior
surface of said circular pad member.
14. The surfacing machine of claim 13, wherein said pad member is
formed of an intermediate member positioned between a pair of pad
members formed of a nonwoven material, said intermediate member
having a rigidity that is greater than a rigidity of said pair of
pad members, each of said pair of pad members having an inner
surface affixed to said intermediate member, and one of said pair
of pad members having an exterior surface opposite said inner
surface, said exterior surface having said plurality of diamond
abrasive members affixed thereto.
15. The surfacing machine of claim 14, wherein said pad member is
formed having a generally circular shape, said pad member includes
a circumferential outer peripheral edge bounding said exterior
surface, and wherein said plurality of diamond abrasive members are
provided adjacent said circumferential outer peripheral edge.
16. The surfacing machine of claim 15, wherein said plurality of
diamond abrasive members are formed having a regular uniform shape,
and wherein said plurality of diamond abrasive members are equally
spaced adjacent said circumferential outer peripheral edge.
17. The surfacing machine of claim 16, wherein each of said
plurality of diamond abrasive members have a uniform circular
shape.
18. The abrasive pad assembly of claim 6, wherein a secondary ring
of equally spaced diamond abrasive members is positioned between
said plurality of diamond abrasive members adjacent said
circumferential outer peripheral edge and a center of said pad
member.
19. An abrasive pad assembly for use with a surfacing machine to
surface a floor, said abrasive pad assembly comprising: a pair of
pad members each having an inner surface and an opposite exterior
surface, said pair of pad members formed of a nonwoven material; an
intermediate member positioned between said inner surfaces of said
pair of pad members, said intermediate member having a rigidity
that is greater than a rigidity of said pair of pad members; and a
diamond abrasive member having an insert and a diamond abrasive
material, said insert having a first surface and an opposite second
surface, said first surface being affixed to one of said exterior
surfaces of said pair of pad members, and said diamond abrasive
material is affixed to said second surface of said insert.
20. The abrasive pad assembly of claim 19, wherein each of said
pair of pad members and said intermediate member are formed having
a generally circular shape, and wherein said diamond abrasive
member is a plurality of diamond abrasive members, said plurality
of diamond abrasive member are affixed to said exterior surface of
one of said pair of pad members, said diamond abrasive members are
positioned equally spaced and adjacent a circumferential outer
peripheral edge.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority of U.S. Provisional
Application 61/603,676 filed Feb. 27, 2012, the contents of which
are incorporated herein by reference.
FIELD OF THE INVENTION
[0002] The present invention is directed to a nonwoven abrasive
pad. More particularly, the present invention is directed to a
nonwoven abrasive pad having a diamond abrasive member.
BACKGROUND OF THE INVENTION
[0003] It is well known in the art to provide surfacing machines
with abrasive pads. The surfacing machines are used for grinding,
scrubbing, and polishing floor surfaces including concrete and
stone floors.
[0004] The abrasive pads are typically formed of a woven or
nonwoven material. Nonwoven pads consist of synthetic fibers or
natural fibers such as hog hair, coconut fibers, and the like. An
abrasive material is typically formed on an outer surface of the
pads. The abrasive material includes diamonds which are used in the
surfacing operation of the floors. The pads include a rigid backing
member which is affixed to the surfacing machine.
[0005] A particular disadvantage of the previously known abrasive
pads is the rapid deterioration thereof. Specifically, during the
surfacing of uneven floors the previously known abrasive pads wear
out too frequently. Further, the previously known abrasive pads
fail to provide a proper burnish on floors having an uneven surface
including a natural stone or floors having a faux stone surfacing
texture.
[0006] Thus, there exists a need in the art to provide a nonwoven
abrasive pad having an abrasive material which allows for extended
use and provides a proper surfacing effect on floors having uneven
surfaces.
SUMMARY OF THE INVENTION
[0007] The present invention provides a nonwoven abrasive pad
having an abrasive material which overcomes the above mentioned
disadvantages of the previously known abrasive pads, thereby
providing increased wear resistance and proper surfacing effects on
uneven floors.
[0008] In brief, the abrasive pad assembly, for use with a
surfacing machine, includes a circular pad member and a diamond
abrasive member. The circular pad member includes an exterior
surface and the diamond abrasive member is affixed to the exterior
surface of the circular pad member. The diamond abrasive member
includes an insert and a diamond abrasive material. The insert has
a first surface affixed to the exterior surface of the circular pad
member. The diamond abrasive material is a polycrystalline diamond
substance that is affixed to the second surface of the insert. The
polycrystalline diamond material is spaced apart from the exterior
surface of the circular pad member.
[0009] In one configuration the circular pad member includes a
circumferential outer peripheral edge bounding the exterior surface
of the circular pad member. The diamond abrasive member is a
plurality of diamond abrasive members which are affixed to the
exterior surface of the circular pad member. The plurality of
diamond abrasive members are provided adjacent the circumferential
outer peripheral edge. The plurality of diamond abrasive members
are optionally equally spaced, formed having a regular uniform
shape, specifically a uniform circular shape.
[0010] In an alternative configuration the abrasive pad assembly
includes a secondary ring of diamond abrasive members. The second
ring of diamond abrasive members is provided between a primary ring
of diamond abrasive members adjacent the circumferential outer
peripheral edge of the circular pad member and a central mounting
hole. The central mounting hole is used to attach the abrasive pad
assembly to a surfacing machine.
[0011] In an alternative configuration the abrasive pad assembly
includes a circular pad member formed of a pair of pad members, and
an intermediate member disposed between the pair of circular pad
members. The pair of circular pad members and the intermediate
member disposed between the pair of circular pad members forms a
stack having an interior surface which attaches to a rigid backing
member and an exterior surface opposite the internal surface. The
exterior surface of the stack having a diamond abrasive member
attached thereto.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] A better understanding of the present invention will be had
upon reference to the following detailed description when read in
conjunction with the accompanying drawings wherein like reference
characters refer to like parts throughout the several views and in
which:
[0013] FIG. 1 is a perspective view illustrating a surfacing
machine having the inventive abrasive pad assembly;
[0014] FIG. 2A is a bottom view of the abrasive pad assembly;
[0015] FIG. 2B is a bottom view of an alternative configuration of
the abrasive pad assembly;
[0016] FIG. 3 is a cross sectional view of FIG. 2A;
[0017] FIG. 4A is a cross-sectional view an alternative
configuration of the abrasive pad assembly;
[0018] FIG. 4B is a cross-sectional view another alternative
configuration of the abrasive pad assembly;
[0019] FIG. 5 is a cross-sectional view of an alternative
configuration of the abrasive pad assembly;
[0020] FIG. 6 is a bottom view of an alternative configuration of
the abrasive pad assembly; and
[0021] FIG. 7 is a bottom view of an alternative configuration of a
diamond abrasive member.
DETAILED DESCRIPTION OF THE INVENTION
[0022] The present invention has utility as an abrasive pad
assembly for a surfacing machine that provides an abrasive pad that
provides increased wear resistance and the ability to properly
surface a floor having an uneven surface. Providing an abrasive pad
having a diamond abrasive member affixed to an exterior surface of
a circular pad member spaced apart from the circular pad member
provides focused wear on the resilient diamond abrasive member
which prevents wear on the circular pad member.
[0023] With reference to FIG. 1, a surfacing machine for providing
a surfacing on a surface floor is generally illustrated at 10. The
surfacing machine includes a motor 12 that actuates the abrasive
pad assembly 14 contained within shield 16. The pad assembly 14
includes a pad member 18 which is secured to the shield 16. The pad
assembly 14 is operatively attached to the motor 12 which actuates
the pad member 18 to perform the floor surfacing operation.
Specifically, the motor 12 actuates the pad member 18 in various
known manners illustratively including vibration, rotation, and
oscillation.
[0024] With reference to FIG. 3, the structure of the pad assembly
14 will now be described. The pad assembly 14 includes a pad member
18, a rigid backing member 24, and a plurality of diamond abrasive
members 33. The rigid backing plate 24 is affixed to the shield 16
of the surfacing machine 10. The pad 18 is then affixed to the
rigid backing plate 24 as known in the art by the hub 22 which
extends through a central mounting hole 20 formed in the pad member
18, as best seen in FIG. 1.
[0025] The rigid backing plate 24 has a diameter substantially
equal to the diameter of the circular pad member 18. Alternatively,
the rigid backing plate 24 includes a diameter that is slightly
larger than the diameter of the pad member 18 and includes a
circumferential lip 26 that bounds a circumferential outer
peripheral edge 28 of the pad member 18. The pad member 18 includes
an interior surface 30 and an opposite exterior surface 32. The
interior surface 30 abuts against the rigid backing plate 24 when
mounted in the surfacing machine 10.
[0026] The plurality of diamond abrasive members 33 are formed of
an insert 34 and a diamond abrasive material 40. The insert 36
includes a first surface 36 and an opposite second surface 38. The
first surface 36 is affixed to the exterior surface 32 of the pad
member 18. The second surface 38 is spaced apart from the exterior
surface 32 of the pad member 18 a distance equal to the thickness
of the insert 34.
[0027] The diamond abrasive material 40 is bonded to the second
surface 38 of the insert 34. The diamond abrasive material 40
includes a polycrystalline diamond material which providing a
surfacing operation on a floor surface by the surfacing machine 10.
The insert 34 is formed of various materials illustratively
including metal, plastics, and other materials. The diamond
abrasive material 40 is securely bonded to the second surface 38 of
the insert 34 in an operation based upon the substance of the
insert 34. The diamond abrasive material 40 is vacuum brazed to
metal inserts 34, bonded to plastic resin inserts, or securely
affixed to hybrid resin inserts having metallic strips extending
therethrough.
[0028] In the configuration illustrated in FIG. 3 the diamond
abrasive material 40 is spaced apart from the exterior surface 32
of the pad member 18. Specifically, the insert 34 acts as a shield
between the diamond abrasive material 40 and the exterior surface
32 of the pad member 18 allowing the friction of the surfacing
operation to be focused on the resilient diamond abrasive material
40 which prevents wear on the circular pad member 14. As described
below, the inserts 34 are formed having various shapes and sizes
along with a spacing array dependent on the application of the
abrasive pad assembly 14. In the illustrated embodiments, the
diamond abrasive members 33, including the insert 34 and the
diamond abrasive material 40, are formed of a generally uniform
regular circular shape.
[0029] The first surface 36 of the insert 34 is affixed to the
exterior surface 32 of the pad member 18 by an adhesive.
Specifically, the inserts are affixed to the pad member 18 with a
suitable adhesive such as an adhesive containing 40-50%
Polyisocyanate Prepolymer based on MDI; 25-30% Polymeric
Diphenylmethane Diisocyanate (PMDI); 20-30% 4,4'-Diphenylmethane
Diisocyanate (MDI); and 1-5% Diphenylmethane Diisocyanate (MDI)
mixed isomers. A suitable adhesive of this type is commonly sold
under the trademark Gorilla Glue.
[0030] With reference to FIGS. 2A and 2B, the configuration of the
diamond abrasive members 33 will now be discussed. As seen in FIG.
2A, the plurality of diamond abrasive members 33 are placed in a
primary circular ring 42. Each of the diamond abrasive members 3 of
the primary ring are placed adjacent the outer peripheral
circumferential edge 28 of the pad member 18. The plurality of
diamond abrasive members 33 are slightly spaced apart by
approximately 1/4 inch. The primary ring of diamond abrasive
members 33 are equally spaced and are positioned such that a
distance between the diamond abrasive members 33 and the
circumferential outer peripheral edge 28 is less than a distance
between the diamond abrasive members 33 and the central mounting
hole 20.
[0031] With reference to FIG. 2B, a secondary ring 44 of diamond
abrasive members 33 is provided on exterior surface 32 of the pad
member 18. The secondary ring 44 is formed similar to the plurality
of diamond abrasive members 33 which form the primary ring 42
positioned adjacent the outer circumferential peripheral edge 28 of
the pad member 18. The secondary ring 44 is placed between the
primary ring 42 and the central mounting hole 20 of the pad member
18. As seen in FIG. 2B, the plurality of diamond abrasive members
33 forming the secondary ring 44 are formed of similarly shaped
generally uniform and regular circular shapes as the plurality of
diamond abrasive members 33 which form the primary ring 42.
[0032] The pad assembly with the diamond abrasive members 33 in the
primary ring 42, as in FIG. 2A, and with a primary ring 42 and
secondary ring 44, as in FIG. 2B, provides a superior ability to
surface floors having an uneven surface. The placement of the
diamond abrasive members 33 at the circumferential outer peripheral
edge 28 combined with the nonwoven pad member 18 provides
flexibility that allows the diamond abrasive material 40 to surface
the uneven floors while permitting sufficient pressure to be
applied to properly surface the floors. In addition, the placement
of the diamond abrasive material 40 apart from the exterior surface
32 of the pad member 18 focuses the wear on the diamond abrasive
members 33 while preventing premature wear on the pad members
18.
[0033] It is appreciated, of course, that the diamond abrasive
members 33, including the inserts 34 and the diamond abrasive
material 40, are not limited to such a regular and uniform
geometric shape. Specifically, the diamond abrasive members 33 can
be formed in various geometric shapes illustratively including
rectangles, triangles, polygons, and arc segments. Moreover, the
abrasive members 33 can be formed of various irregular and
nonuniform shapes such as trailing spirals.
[0034] With reference to FIGS. 4A and 4B, alternative
configurations of assembly will now be discussed. Although not
illustrated, the pad assemblies 114 and 214 of FIGS. 4A and 4B
include the rigid backing plate 24. As shown in FIG. 4A, the
abrasive pad assembly 114 includes a pad member 118 having recessed
pockets 146 formed in the exterior surface 132. The recessed
pockets 146 are provided with a depth that is generally equal to or
slightly less than the thickness of the inserts 134. Each of the
inserts 134 is provided in the recesses 146 such that the first
surface 136 abuts the bottom of the recessed pockets 146 such that
the opposite second surface 138 of the inserts 134 extends beyond
the exterior surface 132 of the pad member 118. With such
configuration the diamond abrasive material 140 are provided spaced
apart from the exterior surface 132 of the pad member 118 while
reducing the overall thickness of the pad assembly 114.
[0035] An alternative configuration of the abrasive pad assembly
214 is illustrated in FIG. 4B. The abrasive pad assembly 214
includes an diamond abrasive member 233, including insert 234 and
diamond abrasive material 240, having a generally circular shape
with a diameter slightly less than the diameter of the pad member
218. In addition, an insert mounting hole 245 having a diameter
generally equal to the mounting hole 220 of the pad member 218 is
formed. The insert mounting hole 245 is positioned on the insert
234 such that upon attachment of the insert 34 to the exterior
surface 232 of the pad member 218 the insert mounting hole 245
aligns with the mounting hole 220 to allow for the mounting of the
abrasive pad assembly 214 to the surfacing machine 10.
[0036] With reference to FIG. 5, an alternative configuration of
the abrasive pad assembly 314 is illustrated. The abrasive pad
assembly 314 includes stacked pad 350 formed of a pair of
corresponding pad members 318A and 318B, and an intermediate member
348. The intermediate member 348 is disposed between the pair of
pad members 318A and 318B. The stacked pad 350 is formed by
positioning one of the pair of pad members 318A and 318B on either
side of the intermediate member 348. The pair of pad members 318A
and 318B are formed of a nonwoven material. The stack pad 350 is
securely fixed through various bonding operations including
adhesives, heat welding, and ultrasonic welding.
[0037] The intermediate member 348 acts as a heat shield to keep
heat generating during the surfacing operation from dissipating and
offers additional rigid support of the abrasive pad assembly 314.
The stack pad 350 includes an interior surface 330 which abuts the
rigid backing member 324 and an opposite exterior surface 332 to
which the first surface 336 of the inserts 334 is affixed. A
suitable stack pad 350 is manufactured by ETC of Henderson and is
sold under the trademark Heat By Gorilla.RTM..
[0038] The intermediate member 348 is formed of a rigid or semi
rigid polymeric, plastic, resin or rubber material that has a
rigidity that is greater than the rigidity of the pair of pad
members 318A and 318B. The intermediate member 348 is formed having
a thickness that is less than a thickness of each of the pair of
pad members 318A and 318B. The upper and lower pair of pad members
318A and 318B allow for compression while the stack pad 350 travels
over uneven floor surfaces while still performing surfacing
operations. During high speed revolutions the intermediate member
348 provides the structural rigidity to the pair of pad members
318A and 318B having a sufficient shear force to maintain the
weight of the diamond abrasive member 533. The combination of the
compressible pair of pad members 318A and 318B with the rigid
structure of the intermediate member 348 allows the stack pad 350
to surface floors having uneven surfaces while preventing the
premature wear of the pads.
[0039] The intermediate member 348 provides sufficient rigidity to
the stack pad 350 allowing for the stack pad 350 to have diameters
in the range of 7 inches to 27 inches while still supporting the
weight of the inserts 333.
[0040] With reference to FIG. 6, an alternative configuration of
the abrasive pad assembly is illustrated at 414. The abrasive pad
assembly 414 is formed of a pair of pad members and an intermediate
member having a generally rectangular shape. The abrasive pad
assembly 414 is provided with a plurality of diamond abrasive
members 433 equally spaced across the entire surface of the
abrasive pad assembly 414. The abrasive pad 414 having the
rectangular shape is primarily used with surfacing machines 10
which operate by vibrating or oscillating the abrasive pad.
[0041] FIG. 7 illustrates an isolated view of the insert 533 having
a unique configuration on the second surface 538. The second
surface 538 includes a central nub 552 surrounded by a plurality of
radially extending grooves 554 and a plurality of concentric
circular grooves 556. The configuration allows for debris and dust
caused during the surfacing operation to be guided towards the
exterior of the diamond abrasive member 533.
[0042] The pad members are formed of various materials including
synthetic and natural fibers fused in a nonwoven manner.
Specifically, the nonwoven pad members are formed of natural fibers
such as hog hair, coconut fibers, and the like. Further still, the
pad members are optionally formed of synthetic and natural
materials having various rigidity varying from rigid plastic or
rubber pad members to flexible/pliable nonwoven pad members formed
of natural fibers.
[0043] Moreover, although FIG. 1 illustrates a surfacing machine 10
as a tri-headed riding surfacing machine, the inventive abrasive
pad assembly is not limited to use with such machine. Specifically,
the abrasive pad assembly is operably attached to a surfacing
machine such as cylindrical surfacing machines, rotating circular
surfacing machines, planetary surfacing machines, and
vibrating/oscillating surfacing machines.
[0044] The present invention is not restricted to the illustrative
examples and embodiments described herein. The embodiments are not
intended as limitations on the scope of the invention. Having
described the invention, however, many modifications thereto will
become apparent to those skilled in the art to which it pertains
without deviation from the spirit of the invention as defined by
the scope of the attached claims.
* * * * *