U.S. patent number 3,593,356 [Application Number 04/806,365] was granted by the patent office on 1971-07-20 for surfboard control device.
Invention is credited to Gene N. Schmalfeldt.
United States Patent |
3,593,356 |
Schmalfeldt |
July 20, 1971 |
SURFBOARD CONTROL DEVICE
Abstract
A surfboard control device comprising a foot stirrup that is
secured to the upper surface of a surfboard along its longitudinal
axis, which stirrup holds the foot of the surfer to the surfboard
during surfing and aids in turning the surfboard by allowing the
surfer to exert upward force on the board through cooperation with
the surfer's other foot, and aids both experienced surfers and
beginning surfers in accurately positioning their feet on the
surfboard, which position is established by trial and error and
identified on a scale.
Inventors: |
Schmalfeldt; Gene N. (San
Diego, CA) |
Family
ID: |
25193880 |
Appl.
No.: |
04/806,365 |
Filed: |
March 12, 1969 |
Current U.S.
Class: |
441/74 |
Current CPC
Class: |
B63B
32/45 (20200201) |
Current International
Class: |
A63c 015/06 () |
Field of
Search: |
;9/310 ;280/11.13 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Buchler; Milton
Assistant Examiner: Sauberer; Paul E.
Claims
Having described my invention, I now claim:
1. A surfboard control device for surfboards on which the surfer
places both feet at selected positions thereon in controlling
movement of the board on waves comprising,
a foot stirrup for being secured to the upper surface of a
surfboard and holding a surfer's foot at a given position on the
surfboard,
means for longitudinally positioning said foot stirrup on said
surfboard,
said positioning means includes a longitudinal channel in the
surface of the surfboard,
and fastener means that fits into said channel for fixedly securing
said stirrup at any given position along the length of the
channel.
2. A surfboard control device as claimed in claim 1 including,
a thin plate that is secured by said fastener means to said
surfboard,
and said stirrup is secured to said plate.
3. A surfboard control device as claimed in claim 2 in which,
said fastener means comprises at least two bolt members that are
aligned fore and aft in said channel,
and said plate having a resilient spacer on it surface adjacent the
surfboard.
4. A surfboard control device for surfboards on which the surfer
places both feet at selected positions thereon in controlling
movement of the board on waves comprising,
a foot stirrup for being secured to the upper surface of a
surfboard and holding a surfer's foot at a given position on the
surfboard,
means for longitudinally positioning said foot stirrup on said
surfboard,
a pair of longitudinal members for being secured to said surfboard
surface at spaced-apart locations and parallel to the longitudinal
axis of the surfboard,
and said stirrup comprises at least a strap member that is secured
at each end to one of said longitudinal members.
5. A surfboard control device as claimed in claim 4 in which,
said longitudinal members are raised above the surface of said
surfboard, whereby the surfer's feet can contact said longitudinal
members to orientate his position relative to the surfboard and
said stirrup.
6. A surfboard control device as claimed in claim 4 including,
means for selectively varying the angle of said stirrup to said
surfboard axis.
7. A surfboard control device as claimed in claim 4 including,
indicia means positioned along the length of said positioning means
for identifying positions of said foot stirrup.
Description
BACKGROUND OF THE INVENTION
Surfing has become a major sport. So there are many surfers,
beginners and experienced surfers, that are constantly improving
their skills and techniques in the sport. While some advancements
have been made in controlling surfboards, such as in the
positioning of the fin on surfboards, the surfer still must control
the surfboard through shifting his feet and weight on the surfboard
to achieve optimum balance and control for given wave sizes,
surfing conditions and size and techniques of the surfer. While the
surfer may press his feet and shift his weight against the board,
the surfer is merely standing on the top of the board and any
downward movement of the board tends to separate the board from the
surfer and decrease his control. While experienced surfers are more
adept at quickly establishing the desired position of the feet on
the smooth upper surface of the surfboard for given surfing
conditions, which experienced surfers can quickly check by glancing
at the board and yet not lose their balance, beginning surfers find
this technique very difficult to learn. Further, even experienced
surfers often find it difficult to accomplish this technique in
many surfing conditions. Thus this difficulty along with the
problem of maintaining a position on the top of the smooth
surfboard, restricts even the most experienced surfer's ability to
ride waves at a higher point on the waves or at optimum speed and
control.
Thus it is advantageous to have a surfboard control device that
allows all surfers to establish given foot positions on a surfboard
and to hold their feet at these given positions to achieve a
greater degree of surfboard control.
SUMMARY OF THE INVENTION
In an exemplary embodiment of this invention, the surfboard control
device comprises a foot stirrup that is secured to the upper
surface of a surfboard and holds the surfer's foot at a given
position on the surfboard. The foot stirrup is movable
longitudinally on the surfboard, allowing the foot stirrup to be
moved to optimum positions and to be rigidly held at these
positions. The surfboard control device has indicia with a scale
positioned along its longitudinal movement that allows the surfer
to identify and remember given positions of the foot stirrup.
In one embodiment the foot stirrup is secured to a pair of
longitudinally positioned and spaced-apart straps that hold the
outer ends of the foot stirrup in position. Fastening means secure
the foot stirrup along the length of the straps. At least one of
the straps has an indicia scale there on for identifying the
position of the stirrup. In another embodiment, the foot stirrup is
secured to a plate member that is held by a pair of fasteners in a
longitudinal recess in the surface of the surfboard. The foot
stirrup is normally provided for the forward foot of the surfer, be
it the surfer's left foot or right foot, and is canted at an angle
to correspond with the angular position of the forward foot on the
surfboard. The canted position may be selectively adjusted as
desired to the individual taste of the surfer. The surfer is thus
able to insert his foot into the stirrup and hold the forward foot
to the surfboard while moving the rearward foot as necessary to
establish balance and to turn the board during the ride.
It is therefore an object of this invention to provide a new and
improved surfboard control device.
It is another object of this invention to provide a new and
improved surfboard control device that allows experienced surfers
to achieve higher degrees of skill in surfing and increases the
experienced surfer's ability to turn and control the surfboard.
It is another object of this invention to provide a new and
improved surfboard control device that allows beginning surfers to
establish given foot positions on a surfboard and to hold their
feet in these positions during surfing.
It is another object of this invention to provide a new and
improved surfboard control device that is inexpensive to make, is
easily installed on a surfboard, and that improves the surfing
skill of all surfers.
Other objects and many advantages of this invention will become
more apparent upon a reading of the following detailed description
and an examination of the drawings wherein like reference numerals
designate like parts throughout and in which:
FIG. 1 is a top plan view of a surfboard with an embodiment of the
surfboard control device positioned thereon.
FIG. 2 is a cross-sectional view taken along lines 2-2 of FIG.
1.
FIG. 3 is a partial view of a holding member of the embodiment of
FIG. 1.
FIG. 4 is a perspective view with parts broken away of the foot
position of a surfer using the surfboard control device.
FIG. 5 is a top plan view with parts broken away of a modified
embodiment of the surfboard control device.
FIG. 6 is a cross-sectional view taken along lines 6-6 of FIG.
5.
Referring now to FIG. 1, a normal surfboard 10, that may be of any
known design having a short or long length and made of any suitable
materials, has a pair of longitudinal strap members 14 and 16
secured thereon. These straps may be made of any suitable material,
such as plastic, fiberglass, aluminum or the like, and are secured
to the upper substantially flat surface of the surfboard in any
known manner such as by screws 21 positioned at spaced intervals.
The strap members 14 and 16 have a plurality of holes 22 along the
length thereof. These holes are threaded to receive the screws 18
that secure the stirrup member 12. The foot stirrup member 12 may
be made of flexible material, such as plastic or other suitable
known materials. It may be understood that if the strap members 14
and 16 are aluminum, then the holes 22 may be threaded to directly
receive the ends of the fastening screws 18. However if the straps
14 are of plastic material, then bolts may be embedded at
appropriate locations to form the threaded holes 22.
It will be noted that the foot stirrup 12 is at a slight angle,
dotted line 20, from the longitudinal axis of the surfboard 10.
This allows the surfer to insert his foot at the angle to which it
is normally positioned on the surfboard, see FIG. 4. In this
invention, the degree of diagonal positioning of the stirrup to
meet different foot positions may be selectively adjusted by
relative movement of the fastening screws 18 and 19. This
adjustment also provides the correct canted position for surfers
who surf with their left foot forward. Also one of the longitudinal
straps, such as strap 14, see FIG. 3, is provided with scaled
indicia 24 along the length thereof for marking and identifying the
longitudinal position of the stirrup. Both the straps 14 and 16
have such indicia scaled thereon to additionally allow the surfer
to cant the foot stirrup to set angles.
Referring now to FIG. 5, a modified embodiment of the surfboard
control device of this invention employs a flat, thin,
stirrup-holding member 30 that may be made of plastic, aluminum or
any other suitable thin and lightweight material. A channel 32 is
provided in the upper surface of the surfboard. This channel may be
grooved in the surfboard or may comprise a channel 48 of plastic,
aluminum or other suitable material that has a narrow slot 32 and
an enlarged longitudinal opening 51. Fastening members 36 secure
the plate member 30 to the surfboard 10 and each have a rotating
bar member 46 with a length slightly smaller than the width of the
opening 51 and a width that is slightly smaller than the slot 32.
The bolt 36 threadably engages the member 46 and thus draws the
member 46 against the surface 52 to secure the plate 30 in
position. Plate 30 has spacers 44 of suitable resilient material,
such as plastic foam or the like along its outer side edges that
aid in providing a secure and nontwisting attachment to the
surfboard 10. The plate 46 rotates to pass through slot 32 at which
time it is then rotated to the position of FIG. 6. Also the plate
46 may have longitudinal grooves therein that coact with cross
grooves in the surface 52 of the shoulder of the slot 32 in member
48 to provide a more rigid holding of the fastener members 36 at
given longitudinal positions in the slot 32.
The plate 30 has a plurality of holes 31 that are threaded to coact
with screws 42 to hold the stirrup 40 in selected positions. Holes
31 allow the stirrup 40 to be canted as desired for different
surfers. Scale 34 allows identification of the longitudinal
position of plate 30 and thus stirrup 40.
In operation, the stirrup surfboard control device is secured to
the surfboard and is positioned at a given longitudinal location
along the length of the surfboard. The surfer places his feet
substantially as illustrated in FIG. 4, with the forward foot 26 in
the stirrup and the rearward foot 28 positioned as necessary to
control the surfboard. The foot 28 is moved from side to side on
the surfboard with appropriate weight shifting to make the
surfboard turn. Normally the position of foot 26 establishes the
relative position of both feet along the length of the surfboard.
This relative positioning can be established by trial and error in
given surf conditions. For example, the stirrup 12 is normally
moved forward for larger waves and moved rearwardly for smaller
waves with the rear foot 28 being moved to the right strap for
right turns and to the left strap for left turns. The latter
features allow a less experienced surfer to position his feet
through feel on the longitudinal members 14 and 26 and thus gain
quicker and more rapid experience in the correct positioning of his
feet. For the more skillful surfer, he would of course establish
through trial and error the exact desired position. It will also be
recognized that all surfers may shift the weight on the foot 28 and
lift to a slight degree with foot 26 against the stirrup 12, thus
in effect lifting up the front of the board. This greatly increases
the ability to turn and skillfully maneuver the surfboard.
* * * * *