U.S. patent number 3,773,375 [Application Number 05/251,039] was granted by the patent office on 1973-11-20 for snow removal device.
Invention is credited to George R. Nehls.
United States Patent |
3,773,375 |
Nehls |
November 20, 1973 |
SNOW REMOVAL DEVICE
Abstract
A snow removal device for removing snow from roofs comprises a
blade connected to a sectional handle. A pair of the handle
sections are interconnected together by coupling members which
permit angular adjustment between the sections. Each coupling
member is provided with a plurality of teeth which interlock with
teeth on the other coupling member thereby permitting a wide range
of adjustment between the respective handle sections. By angularly
adjusting the sections, the blade may be positioned in proper
relation with respect to the surface of the roof, thereby
permitting the snow to be removed from the roof in a highly
effective manner while the user is standing on the ground.
Inventors: |
Nehls; George R. (Minneapolis,
MN) |
Family
ID: |
22950223 |
Appl.
No.: |
05/251,039 |
Filed: |
May 8, 1972 |
Current U.S.
Class: |
37/268; 15/144.1;
16/340; 16/342; 37/285; 294/54.5; 294/56; 16/427; 16/438; 16/900;
15/105; 15/144.3 |
Current CPC
Class: |
E04D
13/106 (20130101); Y10T 16/50 (20150115); Y10T
16/4719 (20150115); Y10S 16/90 (20130101); Y10T
16/54038 (20150115); Y10T 16/540345 (20150115) |
Current International
Class: |
E04D
13/10 (20060101); E01h 005/02 () |
Field of
Search: |
;294/19R,53.5,54,57
;37/53 ;56/400.04,400.05 ;306/2,6,10,12 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Blunk; Evon C.
Assistant Examiner: Cherry; Johnny D.
Claims
What is claimed is:
1. A snow removing device comprising
a substantially flat, generally rectangular blade having an opening
in the central portion thereof and having a lower portion disposed
in angulated relation with respect to the general plane of the
blade, said blade being constructed of a substantially rigid
material, an elongate scraping edge member detachably mounted on
the lower portion of said blade and being formed of a yieldable
material, `an elongate sectional handle comprised of a plurality of
interconnected elongate generally tubular handle sections, means
securing said blade to one end of one of said handle sections,
a pair of cooperating adjustable coupling members, one of which is
connected to one end of one section and the other coupling member
being connected to one end of another handle section, each coupling
member having a plurality of spaced apart interlocking teeth
arranged in a circular pattern, each tooth on one coupling member
being disposed between and engaging a pair of teeth on the other
coupling member whereby said coupling members may be variously
adjusted with respect to each other to permit angular adjustment of
the handle sections with respect to each other through an arc
exceeding 180.degree.,
means releasably securing the coupling members together in a
selected adjusted position,
certain of said handle sections having a pair of connecting members
on opposite ends thereof, one of said connecting members including
a male threaded connecting element positioned interiorly of the
associated handle section and extending longitudinally thereof, and
the other of said connecting members including a female socket
element projecting exteriorly and longitudinally of the associated
handle section and releasably engaging a male coupling element on
the adjacent handle section, a hand grip member, a mounting ring
detachably secured to one of said handle sections and being
detachably secured to said hand grip member to detachably mount the
latter on said one handle section to project generally at right
angles thereto.
2. The snow removal device as defined in claim 1 wherein said blade
securing means comprises a substantially flat plate, a post affixed
to said plate and projecting therefrom through the opening in said
blade and telescopically into the end of one of said tubular handle
sections, and means securing said plate against the central portion
of said blade and securing said post to said last mentioned one
handle section.
Description
SUMMARY OF THE INVENTION
It is generally desirable and often times necessary for residents
in areas where there is heavy snow fall to remove the snow from the
roofs of their houses. Snow rakes have been developed which have
long handles and which permit a user to stand on the ground and
remove the snow from the roof with a raking action. However, it is
difficult for a user to maintain the blade of the snow removal
device at the proper angle with respect to the roof surface as the
user rakes the snow from the roof.
It is therefore a general object of this invention to provide a
novel snow removal device which includes a blade connected to an
angularly adjustable sectional handle. At least two of the handle
sections of the handle are interconnected toether by coupling
members each having a plurality of teeth which interlock with the
teeth on the other coupling member. With this arrangement, these
handle sections may be adjusted angularly with respect to each
other and this permits the blade of the snow removal device to be
maintained in proper relationship with respect to the roof surface.
The number of handle sections used naturally determines the overall
length of the sectional handle, and angular and length adjustments
permit a user to very efficiently remove snow from roofs of various
sizes and inclinations.
These and other objects and advantages of this invention will more
fully appear from the following description made in connection with
the accompany drawings wherein like reference characters refer to
the same or similar parts throughout the several views.
BRIEF DESCRIPTION OF THE FIGURES OF THE DRAWINGS
FIG. 1 is a perspective view of the novel snow removal device
illustrating a manner of use of the device;
FIG. 2 is an exploded perspective view of the novel removal device
foreshortened for clarity and illustrating the details of
construction thereof;
FIG. 3 is a side elevational view of one end portion of the device
with certain parts thereof broken away and illustrating the details
of construction of the blade;
FIG. 4 is a fragmentary elevational view of the coupling members
which interconnects a pair of handle sections together with certain
parts thereof broken away for clarity;
FIG. 5 is a fragmentary side view of the end portions of a pair of
handle sections partly in section and partly in elevation with the
handle sections being illustrated in an uncoupled condition;
and
FIG. 6 is a fragmentary side elevational view of a portion of the
hand grip member which is attached to one of the handle
sections.
DETAILED DESCRIPTION OF THE INVENTION
Referring now to the drawings and more specifically to FIGS. 1 and
2 it will be seen that one embodiment of the novel snow removal
device, designated generally by the reference numeral 10, is
thereshown. This snow removal device includes an elongate sectional
handle 11 which has a snow removal blade 12 secured to the forward
end thereof.
Referring now to FIGS. 2 and 3, it will be seen that the blade 12,
preferably formed from a rigid metallic material such as aluminum
or the like, includes a flat upper portion 13 which is integrally
formed with an angular lower portion 14. The angular lower portion
has an elongate longitudinally extending socket member 15
integrally formed therewith and this socket member receives a
removable edge member 16 which is preferably formed of a yieldable
material such as rubber or the like. This edge member 16 is
provided with a socket engaging portion 17 that snugly engages in
the socket of the socket member 15.
The upper flat portion of the blade has a relatively large opening
18 therein and also has a plurality of smaller openings 19 therein
adjacent the larger opening 18. A generally circular flat plate 20
is provided with a sleeve or port 21 integrally formed therewith
and projecting axially from the central portion thereof. The plate
20 is positioned against the blade and the post projects through
opening 18 therein and is received within the hollow interior of
one of the handle sections 22.
In this regard, the handle sections 22 are of elongate hollow
cylindrical construction and each is formed of a suitable metallic
material, preferably aluminum. The circular plate 20 also has a
plurality of openings 23 therein which are disposed in registering
relation with the smaller openings 19 in the blade 12 and
accommodate rivets 24 therethrough to secure the blade to the plate
20. The post 21 which is received within one of the handle sections
22 is secured thereto by a suitable rivet 25, although any suitable
means such as a bolt or the like may also be used.
One of the important features of the present invention is the
angular adjstment of the sectional handle 11. To this end, a pair
of generally circular flat coupling members 26 are each secured to
one of the handle sections 22 and each coupling member is provided
with an elongate shank or cylindrical portion 27 projecting
therefrom and received within the hollow end portion of the
adjacent handle section. A rivet 28 secures the shank of one of the
coupling members to its associated handle section 22.
Each coupling member 26 is provided with a plurality of spaced
apart peripheral teeth 29 which are arranged in a circular manner
and which generally project axially from the coupling member. Each
coupling member also has an annular recess 30 positioned radially
interiorly of the peripheral teeth 29, and the central portion of
each coupling member has a rectangular shaped opening 31
therethrough. The openings 31 in the coupling members receive the
shank of a bolt 32 which is threadedly engaged by a wing nut 33.
The rectangular shape of the opening 31 accommodates the
rectangular shoulder portion of the bolt 32 to prevent rotation of
the bolt when the wing nut is applied to the threaded shank
thereof.
With this arrangement, it will be seen that by loosening the wing
nut 33, the angular disposition between the pair of the handle
sections may be readily adjusted by shifting the coupling members
with respect to each other. In each new position, the interlocking
relationship of the teeth of the coupling members prevents any
movement between the handle sections with respect to their adjusted
position.
In the present embodiment, three handle sections are shown,
although any number of handle sections may be used to permit
selection of the desired length. Referring now to FIG. 5, it will
be seen that means for interconnecting the adjacent sections
together is there shown. To this end, it will be seen that each
handle section 22 has a cylindrical connecting member 34 secured to
one end thereof and each connecting member 34 has a portion thereof
which extends interiorly of the associated handle section and is
secured therein by a suitable rivet 35. Each connecting member is
provided with a threaded socket 36. Each handle section also has a
cylindrical connecting member 37 which is positioned interiorly of
the other end thereof and is secured therein by a suitable rivet
38. The connecting member 37 is provided with an axially projecting
male threaded element 39 which projects from the associated
connecting member 37 but which is positioned interiorly of the
associated handle section. This male threaded element 39 is adapted
to threadedly engage in the socket 36 of the coupling member 34. It
will be noted that that portion of the coupling member 34
positioned exteriorly of its associated handle section 22 is of a
size to be nicely accommodated in the space defined between the
coupling member 37 and the exterior of the associated handle
section. This space in the handle section containing the coupling
member 37 has been designated 22a, as best seen in FIG. 5. It will
be therefore seen that each of the handle sections which does not
have a coupling member 26 secured thereto will have connecting
member 34 secured to one end thereof.
The handle section located most remotely from the blade 12 may be
provided with a suitable hand grip member 40 adjacent its outer end
to facilitate operation of the snow removal device. It will be
noted that the hand grip 40 projects at substantially right angular
relationship to the associated handle section 22 and is connected
to a connecting ring 41 by a threaded stud 42 which threadedly
engages in a threaded bore formed in the connecting ring. The
thrreaded stud 42 bears against an annular flap 43 integrally
formed with the connecting ring 41 and positioned interiorly
thereof and this clamping flap 43 is adapted to clamp against the
end of the associated handle section when the hand grip member 40
is tightened.
In use, a user desiring to remove snow from a roof will adjust the
angular relation between those handle sections 22 provided with the
coupling members 26. The angular adjustment is made so that the
blade may be properly oriented with respect to the surface of the
roof during the raking action. The snow removal device may be
provided with as many extensions of the handle sections as desired
to effectively remove the snow from the roof. It will be seen that
the sectional handle may be angularly adjusted to orient the blade
in proper relationship to the roof surface regardless of the angle
or the absence of an angle which the surface of the roof
defines.
In this regard, it will be noted that the sectional handle may be
angularly adjusted through an arc exceeding 270.degree. if desired.
Under most circumstances, the angular adjustment between the handle
sections to properly orient the blade will usually be less than
45.degree. with respect to a straight or non-angular relationship.
However, in some instances it will be necessary to adjust the angle
in excess of 45.degree. but as shown, this may be readily
accomplished.
The yieldable scraper edge member 15 permits effective scraping of
the roof while minimizing any damage to the surface thereof,
especially shingles. Further, this edge member 16 may be replaced
if it becomes damaged or worn.
From the foregoing description it will be seen that I have provided
a novel snow removal device which, because of its unique angularly
adjustable sectional handle, permits a user to very effectively
scrape or rake the snow from a roof surface regardless of the angle
or inclination of the roof. The unique construction of the coupling
connection between the angularly adjustable handle sections permit
ready and easy adjustment thereof but provides a very efficient
strong connection between these sections.
Thus it will be seen that I have provided a snow removal device,
which is not only of simple and inexpensive construction, but one
which functions in a more efficient manner than any heretofore
known comparable device.
* * * * *