U.S. patent number 3,819,177 [Application Number 05/222,348] was granted by the patent office on 1974-06-25 for elastic exercise belt.
Invention is credited to Irving Spiro.
United States Patent |
3,819,177 |
Spiro |
June 25, 1974 |
ELASTIC EXERCISE BELT
Abstract
An elastic exercise belt for "isometrics" exercising comprising
a length of elastic webbing having a pressure-sensitive means for
joining the ends to form a closed loop and operative to release
upon tensional force being applied in stretching the belt. The
pressure-sensitive means, preferably in the form of "VELCRO"
strips, can be calibrated and adjusted as to force of release by
controlling the area of pressure-sensitive strip overlap.
Inventors: |
Spiro; Irving (Miami Beach,
FL) |
Family
ID: |
22831834 |
Appl.
No.: |
05/222,348 |
Filed: |
January 31, 1972 |
Current U.S.
Class: |
482/122; 482/91;
128/DIG.15 |
Current CPC
Class: |
A63B
21/00043 (20130101); A63B 21/0552 (20130101); A63B
21/0004 (20130101); A63B 2209/10 (20130101); A63B
21/0555 (20130101); A63B 21/00069 (20130101); A63B
21/0557 (20130101); Y10S 128/15 (20130101) |
Current International
Class: |
A63B
21/02 (20060101); A63B 21/055 (20060101); A63b
021/02 () |
Field of
Search: |
;273/189R
;272/DIG.4,DIG.57R,66,67,79R,82,5 ;2/311,312,338,339
;128/75,327,134,165,DIG.15 ;46/DIG.1 ;73/379-381 ;63/3 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
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|
|
|
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473,388 |
|
Mar 1929 |
|
DD |
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551,858 |
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Nov 1956 |
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BE |
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Primary Examiner: Oechsle; Anton O.
Assistant Examiner: Apley; Richard J.
Attorney, Agent or Firm: Schmidt; Ernest H.
Claims
What I claim as new and desire to secure by Letters patent is:
1. An exercise belt comprising, in combination, a length of elastic
webbing, releasable overlap means for interconnecting the ends of
said length of elastic webbing to form a closed loop, said
releasable overlap means being operative to release upon the
application of tensional forces in and throughout said closed loop
of elastic webbing, said overlap means being operative as a
function of the amount of overlap of said ends of said elastic
webbing along the length of said elastic webbing for adjusting the
tensional force of said release, indicia along one end of said
elastic webbing to facilitate pre-setting said tensional force of
said release to a selected value of adjustment, and a flexible
elongated connecting member having two ends, each end of said
member being connected to said length of elastic webbing adjacent a
respective end of said length of elastic webbing, said overlap
means comprising a pair of cooperative, pressure-sensitive strips
sewn against end portions, respectively, of said length of webbing.
Description
This invention relates to exercising equipment and is directed
particularly to improvements in elastic exercise belts of the type
used in so-called "isometrics" or "dynamic tension" exercising.
Use of elastic belts placed between various parts of the arms, legs
and trunk of the body for tensioning corresponding sets of body
muscles against each other in exercising for physical well-being is
well known. Such exercise belts as heretofore devised, however, are
deficient in that they provide no way of determining the amount of
tensional force being applied. Since the tension being applied
cannot be determined with any degree of accuracy, such belts cannot
be used successfully in physical fitness programs based on gradual
and controlled increases in exercise effort.
It is, accordingly, the principal object of this invention to
provide an improved elastic exercise belt of the character above
described which includes adjustable means for abruptly relieving
tension at any pre-set value within a wide range of tensional
forces being applied.
A more particular object is to provide an elastic exercise belt of
the character described in the form of a length of elastic webbing,
the ends of which are provided with pressure-sensitive,
over-lapping adhesive means for securing them together to form a
closed loop, and wherein the adhesive means, when subjected to
forces in shear, will release adhesive attachment abruptly at force
values directly proportional to the area of overlap.
Still another object of the invention is to provide an elastic
exercise belt of the above nature which will be simple in
structure, economical to manufacture and durable in use.
Other objects, features and advantages of the invention will be
apparent from the following description when read with reference to
the accompanying drawings. In the drawings, wherein like reference
numerals denote corresponding parts throughout the several
views:
FIG. 1 is a perspective view of an elastic exercise belt embodying
the invention shown in use; and
FIG. 2 is a front view of the belt, shown separately and in
released condition.
Referring now in detail to the drawing, 10 designates, generally, a
preferred form of elastic exercise belt embodying my invention, the
same being comprised of a length of woven elastic webbing 11, along
end portions of which, at opposite sides of the webbing, are sewn
or otherwise attached pressure-sensitive adhesive means 12 and 13
for inter-connecting, face-to-face releasable engagement of the
device to form a closed loop or belt as shown in FIG. 1. In the
preferred form of my invention the adhesive means 12, 13 is
comprised of cooperating strips of woven "NYLON" fabric having
different physical characteristics and which adhere tenaciously to
each other when pressed together. Such strips are sold under the
trade name "VELCRO" by the American Thread Company, New York, N.Y.,
and Chicago, I11. One of the "VELCRO" strips, the strip designated
13 in FIG. 2, has a soft, wool-like surface and is termed the
"pile" strip. The other strip 12 has a comparatively rough and hard
surface comprising rows of loop hooks extending outwardly of the
fabric body or the base of the strip and is termed the "hook"
strip. An important characteristic of the "VELCRO" strips 12 and 13
is that when separating forces are applied in shear, as occurs when
the belt is used in exercising (as by use in arm and shoulder
exercises in the manner shown in FIG. 1 for example), the tensional
force in the belt at which release is effected will be directly
proportional to the area of overlap of the "VELCRO" strips.
Assuming this release characteristic in shear to be, for example, 8
pounds per square inch of overlap, a typical value, "VELCRO" strips
6 inches long and 2 inches wide would permit a maximum release
force of 12 .times. 8 or 96 pounds. As illustrated at 14 in FIG. 2
the strip 12, assumed to be 2 inches wide, is divided along its
length in 1 inch graduations marked with corresponding release
poundage values. Intermediate values could also be marked, or can
readily be estimated by adjustment of length of overlap between the
1 inch (or 16 pound) graduations. It will thus be understood that,
with the embodiment illustrated, the user could readily adjust for
tension release to within a few pounds for any value between, say,
5 and 96 pounds. As a means of preventing falling away from the
body of the exercise belt upon its separation or release during
exercising, a length of light fabric tape 15 is sewn between the
inner end of one of the "VELCRO" strips and the outer end of the
other of the strips 12 and 13, respectively, for example, as
illustrated in FIG. 2.
While I have illustrated and described herein only one form in
which my invention can conveniently be embodied in practice, it is
to be understood that this form is presented by way of example only
and not in a limiting sense. The invention, in brief, comprises all
the embodiments and modifications coming within the scope and
spirit of the following claims.
* * * * *