U.S. patent application number 10/877088 was filed with the patent office on 2005-10-20 for ice scraper.
Invention is credited to Douziech, Maurice J..
Application Number | 20050229438 10/877088 |
Document ID | / |
Family ID | 35094760 |
Filed Date | 2005-10-20 |
United States Patent
Application |
20050229438 |
Kind Code |
A1 |
Douziech, Maurice J. |
October 20, 2005 |
Ice scraper
Abstract
The present invention is concerned with ice scrapers having a
tubular shaft and a blade made of spring sheet steel. The use of
spring steel provides an ice scraper blade that is strong, thin and
flexible, which makes it easier to lift frozen snow and ice off of
sidewalks and driveways. The blade is preferably rectangular
although other shapes such as trapezoidal and semi-circular may be
used. The shaft comprises a compressible rubber bulb as a handle to
absorb the compressible shock forces as the ice scraper is being
used. An alternate embodiment of the present invention includes a
deflector mounted above the blade similar to a snow scoop that
directs pieces of snow and ice forward as they are lifted of the
sidewalk or driveway.
Inventors: |
Douziech, Maurice J.;
(Edmonton, CA) |
Correspondence
Address: |
JEAN M. MACHELEDT
501 SKYSAIL LANE
SUITE B100
FORT COLLINS
CO
80525-3133
US
|
Family ID: |
35094760 |
Appl. No.: |
10/877088 |
Filed: |
June 24, 2004 |
Current U.S.
Class: |
37/285 |
Current CPC
Class: |
E01H 5/02 20130101 |
Class at
Publication: |
037/285 |
International
Class: |
E01H 005/02 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 15, 2004 |
CA |
2,464,211 |
Claims
We claim:
1. A scraper for removing material from a surface, comprising: a)
an elongate shaft having upper and lower ends; b) a blade holder
operatively attached to the lower end of said shaft whereby said
blade holder extends below the lower end of said shaft; and c) a
flexible blade operatively attached to said blade holder whereby
said blade extends below said blade holder.
2. The scraper as set forth in claim 1 wherein said scraper is
suitable for removing ice from the surface.
3. The scraper as set forth in claim 1 wherein the upper end of
said shaft comprises a shock-absorbing hand grip.
4. The scraper as set forth in claim 3 wherein said hand grip is a
compressible bulb made of rubber.
5. The scraper as set forth in claim 1 wherein said blade holder
further comprises a blade support mounted between said blade and
said blade holder to support said blade.
6. The scraper as set forth in claim 5 wherein said blade holder
further comprises a sleeve for receiving the lower end of said
shaft whereby the lower end of said shaft contacts said blade
support when said lower end is inserted fully into said sleeve.
7. The scraper as set forth in claim 1 wherein said blade is made
of spring steel.
8. The scraper as set forth in claim 7 wherein the thickness of
said blade is in the range of 0.030" and 0.080".
9. The scraper as set forth in claim 7 wherein said blade is
rectangular.
10. The scraper as set forth in claim 7 wherein said blade is
trapezoidal.
11. The scraper as set forth in claim 7 wherein said blade is
semi-circular.
12. The scraper as set forth in claim 1 wherein said blade holder
further comprises a deflector for directing material away from the
surface as said material is raised by said blade as said blade is
slid between said material and said surface.
13. An ice scraper for removing ice from a substantially horizontal
surface, comprising: a) an elongate shaft having upper and lower
ends, the upper end further comprising a shock-absorbing hand grip;
b) a blade holder operatively attached to the lower end of said
shaft, the blade holder having a sleeve for receiving the lower end
of said shaft whereby said blade holder extends below the lower end
of said shaft; and c) a flexible blade made of spring steel
operatively attached to said blade holder whereby said blade
extends below said blade holder, said blade having a blade support
mounted between said blade and said blade holder.
14. The ice scraper as set forth in claim 13 wherein said blade
holder further comprises a deflector for directing ice away from
the surface as said ice is raised by said blade, said blade raising
said ice with the spring tension of said blade as it is slid
between said ice and said surface.
15. The ice scraper as set forth in claim 13 wherein said hand grip
is a compressible bulb made of rubber.
16. The ice scraper as set forth in claim 13 wherein the thickness
of said blade is in the range of 0.030" and 0.080".
17. The ice scraper as set forth in claim 13 wherein said blade is
rectangular.
18. The ice scraper as set forth in claim 13 wherein said blade is
trapezoidal.
19. The ice scraper as set forth in claim 13 wherein said blade is
semi-circular.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to the field of scrapers, more
particularly, ice scrapers.
BACKGROUND OF THE INVENTION
[0002] In winter climates, snow often accumulates on sidewalks and
driveways. If not cleared shortly after a snowfall, the snow will
often become compacted and, through temperature cycling throughout
the day or through melting and freezing again overnight, turn into
a layer of ice. Such ice buildup is difficult to remove from the
sidewalk or driveway.
[0003] Convention ice scrapers are, typically, heavy and inflexible
steel blades which are used to chop away layers of ice or to scrape
along the sidewalk or driveway and lift the ice up. As the blade of
such scrapers are relatively thick, it often requires great effort
to remove ice with this style of tool.
[0004] This is even more apparent during the
late-winter/early-spring months when daytime temperatures rise
above freezing and allow the layers of frozen snow and ice on
sidewalks or driveways to melt and subsequently freeze again when
temperatures drop below freezing overnight. Freezing rain
conditions during this period of time contribute to this problem
even further. Conventional ice scrapers typically have too blunt of
an edge to effectively lift layers of frozen snow and ice from
sidewalks or driveways.
[0005] It is, therefore, desirable to have an ice scraper that
requires minimal effort to lift ice frozen to a surface such as a
sidewalk or driveway.
SUMMARY OF THE INVENTION
[0006] The present invention is an improved ice scraper. It
consists of a long, thin cylindrical handle having a blade holder
at the lower end of the handle. Attached to the bottom of the blade
holder is a piece of spring sheet steel. Preferably, the blade is
bolted to the blade holder but it may also be welded or riveted to
the holder. The use of spring sheet steel provides a blade that is
thin, strong and flexible. This type of blade may, preferably, be
rectangular in shape but other shapes, such as trapezoidal or
semi-circular, may be employed as well.
[0007] The spring steel blade is quite thin compared to the blade
of conventional ice scrapers. This aspect of the blade allows it to
be more readily inserted between the sidewalk or driveway and the
layer of ice with less force as required with conventional
scrapers. Furthermore, the blade will curl as forces applied to the
scraper to remove a layer of ice. The curling of the blade gives
rise to spring tension in the blade as it tries to straighten out.
The effect of the spring tension helps to lift or "pop" ice from
the sidewalk or driveway thereby reducing the effort required to
remove the layer of ice.
[0008] Another advantage of the spring steel blade is that the
blade is self-sharpening as it is continually scraped along the
concrete or asphalt surface of the sidewalk or driveway.
[0009] Another aspect of the present invention is that it also,
preferably, includes a deflector on the blade holder located above
the blade. Preferably, the deflector is curved forward like a snow
scoop so that when ice is lifted from the surface, the deflector
will direct the removed ice pieces forward as force is applied to
the scraper.
[0010] Another aspect of the present invention is that it,
preferably, includes a compressible grip on the upper end of the
handle. Preferably, the grip is a hollow rubber bulb that absorbs
shock to the users hand as the present invention is used to remove
ice from a surface. The rubber bulb has a stem that, preferably,
slips into a recess or opening at the upper end of the handle.
Accordingly, the handle may be a hollow metal tube or a wooden
shaft having a hole or recess drilled at the upper end to receive
the stem of the bulb.
[0011] Broadly stated, the present invention is a scraper for
removing material from a surface, comprising an elongate shaft
having upper and lower ends; a blade holder operatively attached to
the lower end of said shaft whereby said blade holder extends below
the lower end of said shaft; and a flexible blade operatively
attached to said blade holder whereby said blade extends below said
blade holder.
[0012] Broadly stated, another aspect of the present invention is
an ice scraper for removing ice from a substantially horizontal
surface, comprising an elongate shaft having upper and lower ends,
the upper end further comprising a shock-absorbing hand grip; a
blade holder operatively attached to the lower end of the said
shaft, the blade holder having a sleeve for receiving the lower end
of said shaft whereby said blade holder extends below the lower end
of said shaft; and a flexible blade made of spring steel
operatively attached to said blade holder whereby said blade
extends below said blade holder, said blade having a blade support
mounted between said blade and said blade holder.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] FIG. 1 is a perspective view of the present invention.
[0014] FIG. 2A is a front view of an alternate embodiment of the
present invention.
[0015] FIG. 2B is a front view of another alternate embodiment of
the present invention.
[0016] FIG. 3 is a side elevational view of the present
invention.
[0017] FIG. 4 is a close-up side view of the blade holder of the
present invention.
[0018] FIG. 5 is a close-up side view of an alternate embodiment of
the present invention.
[0019] FIG. 6 is a close-up side view of the handgrip of the
present invention.
[0020] FIG. 7 is a close-up view of an alternate handgrip of the
present invention.
[0021] FIG. 8 is a side elevational view of the present invention
in operation.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0022] The present invention is an ice scraper having a spring
steel scraper blade.
[0023] Referring to FIGS. 1, 3 and 4, the preferred embodiment of
the present invention is shown. Scraper 10 comprises of shaft 12,
handgrip 18, blade holder 24 and blade 20. Shaft 12 may be made of
wood or may be a metal tube.
[0024] Blade 20 is, preferably, made of sheet spring steel,
typically between approximately 0.030" and 0.080" thick. Blade 20
may, preferably, be rectangular in shape or it may be trapezoidal
as shown in FIG. 2A. It is anticipated that other shapes can be
used as well such as curved or semi-circular as shown in FIG.
2B.
[0025] Blade holder 24 further comprises sleeve 26, relief 25 and
deflector 22 which has concave side 28 and convex side 30. Blade 20
is mounted to blade holder 24 by passing bolts 34 through openings
21 on blade 20 and holes 35 in blade holder 24 which are secured by
nuts 36. In the preferred embodiment, blade support 32 is a
Z-shaped member mounted between blade 20 and blade holder 24 in
relief 25. Blade support 32 is preferably made of metal and
provides additional strength and support for blade 20. Blade holder
24 may, preferably, be made of metal or injected-molded plastic
although other materials as known to those skilled in the art will
suffice.
[0026] Referring to FIGS. 3 and 4, lower end 14 of shaft 12 is
inserted in sleeve 26. Preferably, lower end 14 slides into sleeve
26 until it contacts blade support 32. When configured this way,
force imparted on blade 20 when scraper 10 is in use transfers
through blade support 32 to lower end 14 of shaft 12 instead of on
blade holder 24. Shaft 12 is secured in sleeve 26 either by
friction fit, by adhesive and/or by a fastener such as a nail,
bolt, screw or rivet.
[0027] Referring to FIG. 5, an alternate embodiment of blade holder
24 is shown. This alternate embodiment comprises mounting tabs 48
on the convex side 30 of deflector 22. Mounting tabs 48 are
provided for attaching a rope or a second handle assembly (not
shown) for two-handed operation of scraper 10.
[0028] Referring to FIG. 6, the preferred embodiment of the present
invention comprises handgrip 18 mounted on upper end 16 of shaft
12. Handgrip 18 is, preferably, a compressible rubber bulb 38 with
narrow stem 40. Stem 40 is fitted into opening 42 of upper end of
shaft 12. Handgrip 18 may be held in place by friction fit or it
may be secured in opening 42 by adhesive or by a fastener as well
known to those skilled in the art.
[0029] Referring to FIG. 7, an alternate embodiment of the present
invention is shown comprising yoke 44 on upper end 16 of shaft 12.
Yoke 44 further comprises rotating grip 46.
[0030] Referring to FIG. 8, when scraper 10 is in use, blade 20
scrapes along surface 50 and slides underneath ice layer 42. The
force to push scraper 10 forward causes blade 20 to flex or curl
increasing the spring tension in blade 20. As blade 20 slides
underneath ice layer 52, the spring tension of blade 20 assists in
ice removal by causing pieces of ice to pop up from surface 50.
When scraper 10 is pushed along surface 50, deflector 22 directs
ice fragments 54 forward. Any shock forces in scraping ice off
surface 50 traveling up shaft 12 are suppressed by handgrip 18
which are absorbed by rubber bulb 38.
[0031] Although a few preferred embodiments have been shown and
described, it will be appreciated by those skilled in the art that
various changes and modifications might be made without departing
from the scope of the invention. The terms and expressions in the
preceding specification have been used therein as terms of
description and not of limitation, and there is no intention in the
use of such terms and expressions of excluding equivalents of the
features shown and described or portions thereof, it being
recognized that the scope of the invention is defined and limited
only by the claims that follow.
* * * * *