U.S. patent application number 14/802994 was filed with the patent office on 2016-01-28 for universal pick adapter.
The applicant listed for this patent is Novatek IP, LLC. Invention is credited to Braden Brown, David R. Hall, Zackary T. Johnson, Brad Julian, Francis E. Leany, Gary Peterson.
Application Number | 20160024918 14/802994 |
Document ID | / |
Family ID | 55166336 |
Filed Date | 2016-01-28 |
United States Patent
Application |
20160024918 |
Kind Code |
A1 |
Hall; David R. ; et
al. |
January 28, 2016 |
Universal Pick Adapter
Abstract
An adapter may allow for non-rotating degradation tips to be
secured to holders traditionally used for accepting rotatable bits.
Such an adapter may comprise a body comprising an interface on one
surface and a seat on an opposing surface. The interface may
comprise a form complementary to an end of a holder and the seat
may comprise a form for accepting a hardened tip.
Inventors: |
Hall; David R.; (Provo,
UT) ; Peterson; Gary; (Salem, UT) ; Leany;
Francis E.; (Salem, UT) ; Julian; Brad; (Orem,
UT) ; Brown; Braden; (Provo, UT) ; Johnson;
Zackary T.; (Provo, UT) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Novatek IP, LLC |
Provo |
UT |
US |
|
|
Family ID: |
55166336 |
Appl. No.: |
14/802994 |
Filed: |
July 17, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62026345 |
Jul 18, 2014 |
|
|
|
Current U.S.
Class: |
299/39.4 ;
299/105; 299/113 |
Current CPC
Class: |
E21C 35/1831 20200501;
E21C 35/19 20130101 |
International
Class: |
E21C 35/19 20060101
E21C035/19; E21C 25/10 20060101 E21C025/10; E21C 35/183 20060101
E21C035/183 |
Claims
1. An adapter for mating a hardened tip to a holder, comprising: a
body comprising an interface on one surface and a seat on an
opposing surface; the interface comprising a form complementary to
an end of a holder; and the seat comprising a form for accepting a
hardened tip.
2. The adapter of claim 1, wherein the interface is secured to a
holder.
3. The adapter of claim 2, wherein the interface is secured to the
holder at an end of the holder exposed when the holder is
positioned within a block.
4. The adapter of claim 3, wherein the block is secured to a
rotatable drum or continuous chain.
5. The adapter of claim 2, wherein the interface is rigidly secured
to the holder by means of a weld, braze, epoxy, shrink fit, or
press fit.
6. The adapter of claim 2, wherein the interface is nonrotatably
secured to the holder.
7. The adapter of claim 1, wherein the seat is secured to a
hardened tip.
8. The adapter of claim 7, wherein the seat is rigidly secured to
the hardened tip by means of a weld, braze, epoxy, shrink fit, or
press fit.
9. The adapter of claim 7, wherein the hardened tip comprises a
superhard material attached to a substrate.
10. The adapter of claim 9, wherein the hardened tip further
comprises a bolster attached to the substrate opposite the
superhard material.
11. The adapter of claim 9, wherein the superhard material is
attached to the substrate via sintering.
12. The adapter of claim 9, wherein the superhard material
comprises polycrystalline diamond.
13. The adapter of claim 9, wherein the substrate is formed of
carbide.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This patent application claims priority to U.S. Provisional
Pat. App. No. 62/026,345 entitled "Universal Pick Adapter" and
filed Jul. 18, 2014, which is incorporated herein by reference for
all that it contains.
BACKGROUND OF THE INVENTION
[0002] Degradation picks are known to be used in such fields as
road milling, mining and trenching to engage and degrade tough
materials such as asphalt, concrete and rock. Such degradation
picks may be secured to an exterior of a rotating drum or
continuous chain so as to be repeatedly brought into contact with a
surface of a material to be degraded. Each degradation pick may
comprise a hardened tip designed for repeated impact with a tough
material. Such repeated impact may break up the tough material into
aggregate pieces that may be removed. To secure such degradation
picks to a rotating drum or continuous chain, a generally
cylindrical shank opposite the hardened tip may be disposed within
a bore within a block that is rigidly fixed to the drum or
chain.
[0003] Certain types of degradation picks may perform better when
allowed to rotate around an axis. For instance, allowing
degradation picks comprising tungsten carbide tips to rotate while
in use may distribute wear more evenly around a circumference of
such degradation picks which may prolong their useful life. In such
cases, rather than disposing the shank directly into a bore of a
block, where rotation could undesirably wear the block, the shank
may be disposed within a bore of a non-rotating holder that itself
is disposed within a block. Thus, the holder may receive any wear
from rotation of a degradation pick while generally protecting the
block.
[0004] For example, U.S. Pat. No. 7,229,136 to Sollami describes
rotatable tools mounted in non-rotatable retainers in machines used
to cut hard surfaces. The useful life of the tools is enhanced by
the rotation of the tool, causing it to wear evenly around its
circumference. The tools have a tapered forward cutting end and a
cylindrical shank that rotatably fits within a complementarily
shaped bore in a tool holder.
[0005] Other types of degradation picks, however, may perform
better when not rotating. For instance, degradation picks
comprising polycrystalline diamond tips may benefit from
non-rotation as the significant wear resistance of such tips may
shield a portion of the degradation pick's body that in turn may
support the tip and thus extend life.
[0006] For example, U.S. Pat. No. 8,668,275 to Hall, et al.
describes a pick comprising a shank that is configured to be
rotationally fixed within a block of a driving mechanism and a tip
configured to degrade a formation. A support side, or spinal
region, may be configured to support the tip while the tip shields
the support side, or spinal region, from the formation.
[0007] The blocks that secure degradation picks to rotating drums
or continuous chains are often rigidly fixed by means of a weld. As
such, the time and energy required to replace or exchange such
blocks may be significant in comparison to that of replacing or
exchanging a degradation pick. Thus, it may be desirable to form
both rotating and non-rotating degradation picks that may be
secured within a single type of block.
BRIEF SUMMARY OF THE INVENTION
[0008] An adapter may allow for non-rotating degradation pick tips
to be secured to holders traditionally used for accepting rotatable
bits. Such an adapter may comprise a body comprising an interface
on one surface and a seat on an opposing surface. The interface may
comprise a form complementary to an end of a holder and the seat
may comprise a form for accepting a hardened tip.
[0009] The interface may be secured to a holder at an end of the
holder exposed when the holder is positioned within a block that
may be secured to a rotatable drum or continuous chain. The
interface may be rigidly secured to such a holder by means of a
weld, braze, epoxy, shrink fit, or press fit in a nonrotatably
manner.
[0010] The seat may be rigidly secured to a hardened tip by means
of a weld, braze, epoxy, shrink fit, or press fit. Such a hardened
tip may comprise a superhard material attached to a substrate and a
bolster attached to the substrate opposite the superhard material.
The superhard material may comprise polycrystalline diamond
attached to a carbide substrate via sintering.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 is an orthogonal view of an embodiment of a road
milling machine.
[0012] FIG. 2 is an orthogonal view of an embodiment of a mining
machine with a magnified view of a degradation pick secured within
a block.
[0013] FIG. 3 is an orthogonal cutaway view of an embodiment of a
rotatable drum supported by a road milling machine comprising a
plurality of degradation picks secured thereon.
[0014] FIGS. 4 and 5 are a perspective view and a longitudinal
sectional view, respectively, of embodiments of degradation
picks.
DETAILED DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 shows an embodiment of a road milling machine 100 of
the type commonly used to engage and degrade asphalt or concrete to
construct or resurface roads and other large surfaces. The road
milling machine 100 may be supported and transported by continuous
tracks 150, wheels or other means known in the art. A rotatable
drum 110 may be secured to an underside of the road milling machine
100 with a plurality of degradation picks attached to an exterior
thereof. As the rotatable drum 110 is rotated, the degradation
picks may repeatedly engage a surface upon which the road milling
machine 100 is traveling.
[0016] FIG. 2 shows an embodiment of a mining machine 200 of the
type commonly used to engage and degrade rock and other
subterranean formations to extract valuable materials from the
earth. The mining machine 200 may comprise a continuous chain 210
with a plurality of degradation picks 220 (shown in magnified view)
secured thereto. Each of the degradation picks 220 may comprise a
hardened tip 228 designed for repeated engagement with a tough
material. Such repeated engagement may break up the tough material
into aggregate pieces that may be removed. Each of the degradation
picks 220 may also comprise a generally cylindrical shank opposite
the hardened tip 228 that may be disposed within a bore within a
block 260 that is rigidly fixed to the continuous chain 210.
[0017] FIG. 3 shows an embodiment of a rotatable drum 310 secured
to an underside of a road milling machine 300. The road milling
machine 300 may rotate the rotatable drum 310 around an axis
generally parallel to a surface 355 upon which the road milling
machine 300 may travel. The rotatable drum 310 may comprise a
plurality of degradation picks 320 secured around an exterior
thereof. As the rotatable drum 310 rotates, the degradation picks
320 may repeatedly impact the surface 355 which may comprise tough
material of any variety such as asphalt or concrete. The repeated
impact of degradation picks 320 against the surface 355 may allow
the plurality of degradation picks 320 to degrade the surface 355
and break it into aggregate pieces.
[0018] FIGS. 4 and 5 show embodiments of degradation picks 420, 520
each comprising a holder 422, 522, an adapter 424, 524, and a
hardened tip 426, 526. The holder 422, 522 may be a typical holder
of the type known in the art. Such holders are generally capable of
receiving a rotatable bit within an opening therein. The holder may
secure the rotatable bit to a block (not shown) while generally
protecting the block from rotational wear of the bit. As seen in
FIG. 5, the adapter 424, 524 may comprise an interface 523
complementary to an end of the holder 422, 522 exposed when the
holder 422, 522 is disposed within a block. The adapter 424, 524
may be rigidly attached to the holder 422, 522 by means of a weld,
braze, epoxy, shrink fit, press fit, or other means of rigid
attachment known in the art. As also seen in FIG. 5, the adapter
424, 524 may further comprise a seat 525 opposite the interface 523
for accepting the hardened tip 426, 526. The hardened tip 426, 526
may comprise a polycrystalline diamond, or other superhard material
527, sintered to a tungsten carbide substrate 528 and a bolster 529
attached to the substrate 528 opposite the superhard material 527.
The hardened tip 426, 526 may be rigidly attached to the adapter
424, 524 by means of a weld, braze, epoxy, shrink fit, press fit,
or other means of rigid attachment known in the art.
[0019] Through use of such an adapter, a non-rotatable degradation
tip may be secured to a block designed to receive a holder intended
for the receipt of rotatable type degradation bits. This may allow
for rapid interchange between rotatable and non-rotatable type
operations without requiring the time consuming and exhaustive
replacement of welded blocks.
[0020] Whereas the present invention has been described in
particular relation to the drawings attached hereto, it should be
understood that other and further modifications apart from those
shown or suggested herein, may be made within the scope and spirit
of the present invention.
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