U.S. patent application number 10/247201 was filed with the patent office on 2003-04-17 for non-magnetic fastener with magnetic locking nail and two-stage hammer apparatus.
This patent application is currently assigned to K&R Corporation and Simplex Nails. Invention is credited to Powell, Kenneth S..
Application Number | 20030072634 10/247201 |
Document ID | / |
Family ID | 26938528 |
Filed Date | 2003-04-17 |
United States Patent
Application |
20030072634 |
Kind Code |
A1 |
Powell, Kenneth S. |
April 17, 2003 |
Non-magnetic fastener with magnetic locking nail and two-stage
hammer apparatus
Abstract
A fastener used to secure a surface layer to a base and a
two-stage fastener driver used the drive the fastener into the
base. The fastener comprising a non-magnetic fastener body
retaining a ferro-magnetic nail. The fastener driver for driving
the fastener into the base. The fastener driver having a housing
for magnetically retaining the fastener.
Inventors: |
Powell, Kenneth S.;
(Lawrenceville, GA) |
Correspondence
Address: |
BROOKS & KUSHMAN
1000 TOWN CENTER 22ND FL
SOUTHFIELD
MI
48075
|
Assignee: |
K&R Corporation and Simplex
Nails
Lawrenceville
GA
|
Family ID: |
26938528 |
Appl. No.: |
10/247201 |
Filed: |
September 19, 2002 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
60323802 |
Sep 19, 2001 |
|
|
|
Current U.S.
Class: |
411/358 |
Current CPC
Class: |
F16B 13/085 20130101;
B05C 17/00516 20130101 |
Class at
Publication: |
411/358 |
International
Class: |
F16B 015/00 |
Claims
What is claimed is:
1. A fastener adapted for attachment to a base and comprising: a
non-magnetic fastener body having a hollow tube with an open bore
end surrounded by a non-magnetic flange and a closed end
sufficiently pointed to penetrate the base when the fastener is
attached to the base and wherein proximate the closed end the
fastener body includes a side opening in communication with the
open bore end through the hollow tube; and a ferro-magnetic nail
extending through the hollow tube from the open bore end proximate
to the side opening and having an exposed magnetic portion
projecting upwardly beyond the flange for retention of the fastener
by a magnetic portion of a fastener driver.
2. The fastener of claim 1 wherein the fastener body includes an
integral camming surface proximate the closed end leading from the
side opening to the hollow tube, wherein the nail interferes with
the camming surface for interferencly securing the nail to the
fastener body and for causing the nail to form a hook configuration
when the nail is driven against the camming surface and out the
side opening.
3. The fastener of claim 2 wherein the integral camming surface is
arcuate.
4. The fastener of claim 3 wherein the non-magnetic material for
the fastener body is zinc, nylon, or plastic.
5. The fastener of claim 3 wherein the flange includes holes.
6. The fastener of claim 3 wherein the hollow tube includes at
least one dimple obstructing the hollow tube for interfering with
the nail.
7. A fastener driver for driving a fastener into a base, the
fastener comprising a non-magnetic fastener body interferencly
secured to a ferro-magnetic nail, the fastener body includes a body
portion having a pointed end portion for penetrating the base and a
flange, the secured nail including a portion that extends beyond
the flange of the fastener body, the fastener driver comprising: a
drive handle connected to a driving rod; a drive housing enclosing
a portion of the driving rod propellable toward the base by
grasping the drive handle; a face on the drive housing that
contacts the flange to drive the fastener body into the base when
the drive housing is propelled toward the base; said drive housing
enclosing a driving means for driving the nail; a magnet within an
inlet of the drive housing for temporarily magnetically securing a
the portion of the nail extending beyond the flange; and the
driving means driving the nail out through a side opening in the
pointed end portion of the fastener body in a hook configuration
after the fastener body is driven into the base.
8. The fastener driver of claim 7 wherein the driving means
includes a weight connected at one side to the driving rod and
connected at an opposite side to a driving pin, the weight
suspended within a weight cavity of the housing by a spring
surrounding the driving pin, the spring providing a biasing force
against the weight, wherein the biasing force is overcome by the
weight after the fastener body is driven into the base to cause the
driving pin to contact the nail for driving the nail out through
the side opening in the pointed end portion of the fastener body in
the hook configuration.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. provisional
application Serial No. 60/323,802 filed Sep. 19, 2001.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to fasteners used to secure a
surface layer to a base layer.
[0004] 2. Background of the Invention
[0005] To secure a surface layer to a sub-surface layer or base, a
fastener can be driven through the surface layer and into the base
layer. In some cases the base material may comprise a type of
material which has a limited ability to generate forces against the
penetrating fastener. Consequently, it is difficult to sufficiently
secure the fastener within such materials. Accordingly, it is
desirable to provide a fastener which can dig into the base for
enhancing the securement of the fastener in the base.
[0006] To drive the fastener into the base, a fastener driver is
required. In the past, the fastener has been driven into the base
with manual operations of a worker holding the fastener with one
hand and striking the fastener with a hammer held in another hand.
Such driving operations are dangerous. Accordingly, it is desirable
to provide a fastener driver which can secure the fastener therein
so that the worker does not have to hold the fastener with a
hand.
SUMMARY OF THE INVENTION
[0007] One aspect of the present invention relates to a fastener
adapted for attachment to a base. The fastener includes a
non-magnetic fastener body having a hollow tube through which a
ferro-magnetic nail is insertable. The fastener body can be driven
into the base and the nail can be driven out through a side opening
in the tube of the fastener body. The fastener includes a portion
of the nail extending beyond a flange of the fastener body for
retention of the fastener.
[0008] Another aspect of the present invention includes the
fastener body having an integral camming surface leading from the
side opening to the hollow tube. The nail interferes with the
camming surface for interferencly securing the nail to the fastener
body and for causing the nail to form a hook configuration when the
nail is driven against the camming surface and out the side
opening.
[0009] Yet another aspect of the present invention relates to
fastener driver for driving the fastener described above into the
base. The fastener driver includes a drive housing having a inlet
leading to a cavity through which the portion of the ferro-magnetic
nail extending beyond the flange of the fastener body can be
inserted for magnetic retention by a magnet located proximate the
cavity. In operation, the drive housing is propelled toward the
base, wherein a face on the drive housing contacts the flange of
the fastener body to drive the fastener body into the base and,
after the fastener body is driven into the base, a driving means
drives the nail out through a side opening in the fastener body in
a hook configuration.
[0010] In yet another aspect of the present invention, the fastener
driver includes a weight connected at one side to a driving rod and
connected at an opposite side to a driving pin. The weight is
suspended within a weight cavity of the drive housing by a spring
surrounding the driving pin. The spring provides a biasing force
against the weight. The biasing force is overcome by the weight
after the fastener body is driven into the base to cause the
driving pin to contact the nail for driving the nail out through
the side opening.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 is a side elevational view of the fastener in
accordance with an embodiment of the present invention;
[0012] FIG. 2 is a perspective view of the fastener shown in FIG.
1;
[0013] FIG. 3 is a fragmentary section of the base sheet and
fastener with a fastener body buried in a base sheet and an exposed
ferro-magnetic portion of a nail within a hollow of a tube portion
of the fastener body before being driven fully down into the
tube;
[0014] FIG. 4 is a fragmentary section of the base sheet and
fastener of FIG. 3 with the nail of the fastener driven into the
base sheet in a hook configuration;
[0015] FIG. 5 is a side elevational view of a fastener driving
device in operating position to drive the nail from the exposed
nail position of FIG. 3 to the buried nail position of FIG. 4;
[0016] FIG. 6 is a side elevational view of the fastener driving
device in its actuated position that causes a portion of the nail
to bend out beyond the body into the hook configuration; and
[0017] FIG. 7 is a side elevational view of the hollow of the tube
portion of the fastener in accordance with an alternative
embodiment of the present invention, wherein the tube portion
includes at least one dimple therein.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0018] The fastener 10 of the present invention is shown in FIG. 1.
The fastener 10 includes a fastener body 12 and a locking nail 14.
The fastener body 14 is formed as a monolithic structure in a
casting process.
[0019] The casting process can be a zinc die casting process or
other process, such as, injection molding. The injection molding
process can use plastics are nylons. Like zinc, plastic, or nylon,
preferably, the fastener body 12 comprises a non-magnetic
rust-resistance material. In contrast, the nail 14, preferably,
comprises a ferro-magnetic material.
[0020] The fastener body 12 includes a tube portion 16 and an
integral flat plate or flange 18. The tube portion 16 includes a
hollow 20 that extends from the flange 18, at an open bore end 22,
to a closed end 24. The hollow 20 provides a passageway within the
fastener body 12 through which the nail 14 passes if inserted. When
the nail 14 is inserted, a portion of the nail 28 extends beyond
the flange 18 and the remaining portion of the nail 14 extends
through the hollow 20 toward the closed end 24.
[0021] The closed end 24 includes a side opening 30. The side
opening 30 leads into a camming surface 32. The camming surface 32
is integrally formed with the fastener body 12 and connects the
hollow 20 of the tube portion 16 to the side opening 30. The
inserted nail 14 extends from the bore end 22, through the hollow
20, and into contact with the camming surface 32. As described in
more detail below, the nail 14 is drivable through the hollow 20,
against the camming surface 32, and out the side opening 30.
[0022] The fastener 10 comprises the fastener body 12 interferencly
secured to the nail 14. The inference is generated from the nail 14
contacting the camming surface 32. Preferably, the interference is
sufficient to retain the weight of the fastener body 12, i.e., the
portion 28 of the nail 14 extending beyond the flange 18 can be
grasped and the fastener body 12 remains interferencly secured to
the nail 14 without any other support.
[0023] A perspective view the fastener 10, with the fastener body
12 interferencly secured to the nail 14, is shown in FIG. 2. The
flange 18 extends outwardly from the tube portion 16 in a
perpendicular manner. A circular pattern is shown, but the flange
18 could similarly extend in a rectangular or other shaped pattern.
Likewise, the flange could extend in a non-perpendicular manner. In
addition, the flange 18 may include holes 34. The holes 34 act as a
relief for material displacement and seepage.
[0024] As shown in FIG. 3, the fastener 10 has penetrated through a
surface layer 36 and into sub-surface layer or base 38. This type
of action is common in a number of applications including: base
sheet fastening, roof insulation board fastening; recovery board
fastening; asphalt shingle fastening; aluminum shingle fastening;
slate shingle fastening; and tile shingle fastening.
[0025] The object of the fastener 10 is to restrict the surface
layer 36 from separating from the base 38. Accordingly, the closed
end 24 portion of the fastener body 12 is sufficiently pointed for
penetrating through the surface layer 36 and into the base 38. The
closed end 24 is formed into a wedge, conical, or chisel point 39.
With respect to FIG. 3, the fastener body 12 penetrates into the
base 38 and retained therein by forces of the base 38 pressing
against the tube portion 16.
[0026] In some applications the ability of the base 38 to exert
force on the tube portion 16 is not sufficient. For example, if the
base 38 was gypsum, aggregate/lightweight concrete, cementitious
wood fiber, or lightweight deck material, the base 38 is limited in
its ability to supply force against the tube portion 16.
Consequently, the fastener 10 may not stay retained within the base
38 and the surface layer 36 may then separate from the base 38.
Especially in applications where the surface layer 36 has a
tendency to push against the flange 18 or otherwise try to separate
from the base sheet 12, the securement of the fastener 10 within
the base 38 is all the more critical to the ability of the fastener
10 to resist the surface layer 36.
[0027] As mentioned above and shown with detail in FIG. 4, the
fastener 10 provides enhanced securement within the base 38 by
driving the nail 14 through the hollow 20, against the camming
surface 32, and out the side opening 30. The camming surface 32
interferes with the driven nail 14 and causes a portion 40 of the
nail 14 to bend out beyond the side opening 30. The nail 14 bends
into a hook configuration. The hook configuration digs into the
base 38 to further secure the fastener 10 within the base 38.
[0028] The bending action is caused by the camming surface 32
having an arcuate configuration. The arcuate camming surface 32
causes the portion 40 of the nail extending beyond the side opening
30 to curve or bend along a radius 42. The radius 42 is
controllable in the casting process by changing the configuration
of the camming surface 12. For example, other curves or bends are
achieved by configuring the camming surface into angular or slanted
configurations instead of the arcuate configuration shown.
[0029] A fastener driver 50 for driving the fastener 10 through the
surface layer 36 and into the base 38 is shown in FIG. 5. The
fastener 10 is retained within a drive housing 52 and driven into
the base layer 38 by thrusting or propelling the fastener driver 50
against the surface layer 36.
[0030] The fastener driver 50 includes a driving means for driving
the nail 14 through the hollow 20 and out the side opening 30. For
example, a handle 54 is connected to a driving rod 56 and the
driving rod 56 is connected to a spring-loaded weight 58. The
spring-loaded weight is connected to driving pin 60 and biased by a
spring 62 within a weight cavity 64 of the drive housing 52. An
inner cavity 66 provides a passageway between the driving pin 60
and an inlet 68 defined within a non-magnetic end cap 69. A magnet
70 is located proximate the inner cavity 66.
[0031] The interference securement of the fastener body 12 to the
nail 14 allows the portion 28 of the nail 14 extending beyond the
flange 18 to be grasped while the fastener body 12 remains
interferencly secured to the nail 14. The magnetic material of the
nail 14 is attracted to the magnet 70 and the non-magnetic material
of the fastener body 12 is not. Consequently, the fastener 10 can
be magnetically retained in the housing 52 by inserting the portion
28 of the nail 14 through the drive housing inlet 68 and into the
inner cavity 66 for magnetic attraction by the magnet 70.
[0032] With the fastener 10 magnetically positioned relative to the
housing 52, an operator can take the handle 54 and thrust the
fastener driver 50 and the fastener 10 against the surface 36.
Initially, a face 72 of the non-magnetic end cap 69 contacts the
flange 18 to cause the closed end 24 of the fastener body 12 to
penetrate through the surface 36 and into the base 38, as shown in
FIG. 3. Subsequently, the momentum created from downwardly
thrusting the fastener driver 50 causes the weight 58 to eventually
overcome the biasing created by the spring 62 and drive the driving
pin 60 against the nail 14. The driving pin 60 drives the nail 14
out through the side opening 30 and into the hooked configuration,
as shown in FIG. 6. Accordingly, the fastener driver 50 is a
two-stage driving mechanism. In the first stage, the face 72 drives
the closed end 24 of the fastener body 12, and, after a time delay
caused by the weight 58 overcoming the biasing of the spring 62, in
a second stage, the driving pin 60 drives the nail 14 out through
the side opening 30.
[0033] The driving device 50 may include a any number of other
driving means for driving the fastener 10 into the base sheet 12
instead of the spring-loaded weight described above. Such methods
may include: a gearing arrangement; a manual compression
arrangement; a torque driving arrangement; a pulley arrangement; or
a linkage system.
[0034] FIG. 7 illustrates another embodiment of the present
invention where the hollow 20 of the tube portion 16 includes at
least one dimple 80. The dimple 56 obstructs the hollow 20 of the
tube portion and provides interference to the nail 14. The dimple
80 may also be used in conjunction with the camming surface 26 to
further effect the hooked configuration radius 52.
[0035] While embodiments of the invention have been illustrated and
described, it is not intended that these embodiments illustrate and
describe all possible forms of the invention. Rather, the words
used in the specification are words of description rather than
limitation, and it is understood that various changes may be made
without departing from the spirit and scope of the invention.
* * * * *