U.S. patent number 3,851,874 [Application Number 05/344,104] was granted by the patent office on 1974-12-03 for push-pull type exercising device.
Invention is credited to Douglas G. Wilkin.
United States Patent |
3,851,874 |
Wilkin |
December 3, 1974 |
PUSH-PULL TYPE EXERCISING DEVICE
Abstract
The exercising machine has a pulley and a cable with a body
engaging end and a force resistance end. The pulley has wheel of
non-circular configuration whereby movement of the cable by the
user will cause cyclic sidewise movement to be imparted to the
cable and vibration motion will be set up in the cable and
transmitted to a user.
Inventors: |
Wilkin; Douglas G. (La
Crescenta, CA) |
Family
ID: |
23349074 |
Appl.
No.: |
05/344,104 |
Filed: |
March 23, 1973 |
Current U.S.
Class: |
482/92; 482/94;
482/129; 482/131; 601/35; 601/40 |
Current CPC
Class: |
A63B
21/155 (20130101); A63B 21/00196 (20130101); A63B
23/03575 (20130101); A63B 21/154 (20130101); A63B
21/06 (20130101) |
Current International
Class: |
A63B
23/035 (20060101); A63B 21/00 (20060101); A63B
21/06 (20060101); A63b 021/00 () |
Field of
Search: |
;272/79R,82,80,57R,81,83A ;242/155 ;74/230.01,230.5 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Marlo; George J.
Assistant Examiner: Browne; William R.
Attorney, Agent or Firm: Flam; Fred
Claims
Intending to claim all novel, useful and unobvious features shown
or described, I make the following claim:
1. In an exercising machine:
a. a pulley assembly, for receiving a cable;
b. a cable extending around the pulley assembly and having
attachments at opposite ends, at least one of the attachments being
engageable by a user for moving the cable along the pulley
assembly;
c. said assembly having a means which is non-circular so that as
the means is rotated by a user acting on the cable a cyclic
sidewise movement will be imparted to the cable, causing vibration
motion to be set up in the cable which is transmitted to a user
during an exercise program.
2. The exercising machine as set forth in claim 1 in which said
cable has stirrups at opposite ends for engagement by feet of a
user, a handle attached to the pulley assembly, and there being a
flexible member joining the handle and the pulley assembly whereby
the pulley assembly may twist as the cable is asymetrically
moved.
3. The exercising machine as set forth in claim 2 in which said
stirrups are made of fabric and said flexible member is a short
rope.
4. The exercising machine as set forth in claim 1 in which said
cable is attached at one of its ends to means for resisting
movement of the cable away form a normal relaxed condition.
5. The exercising machine as set forth in claim 1 in which said
cable has a resilient connection means for connecting one end of
the cable to an immovable member; said pulley assembly being
fixedly anchored to a base member so as to resist movement of the
cable away from a normal relaxed condition to a position where the
resilient connection means is elongated.
6. In an exercising machine:
a. a pulley assembly for receiving a cable, said assembly including
a non-circular pulley wheel means for developing vibration motion
during rotation thereof by a user;
b. a cable having user engaging attachments at opposite ends
thereof, said cable extending around the pulley wheel means;
c. at least one of said attachments being engageable by a user for
moving the cable along the pulley wheel means;
d. said vibration motion is transmitted to a user through said one
of said attachments.
7. The exercising machine as set forth in claim 6 in which said
cable is in the form of a fabric tape.
8. The exercising machine as set forth in claim 6 in which said
pulley wheel is substantially polygonal in configuration to provide
a series of spaced wheel lobes.
9. The exercising machine as set forth in claim 6 in which said
pulley wheel is substantially square, the measure of the side of
the square being approximately 1 inch.
Description
BACKGROUND OF THE INVENTION
1. Field of Invention
This invention relates to exercising devices, and particularly to
an isotonic device having a vibrating isometronic function
indirectly powered by the user.
2. Discussion of Prior Art
A wide variety of exercising devices are known. Isotonic weight
devices are in large measure designed to build and tone muscle
tissue. Isometric exercising was at one time highly promoted as a
method capable of achieving results equivalent to those achieved by
complex exercising devices but without special equipment or
appliances. However, some medical authorities have suggested that
isometric exercising creates certain hazards due to the immobility
or lack of movement of the body during strenuous work. Muscle
building apart, many authorities are concerned with the debility of
those who, due to lack of interest, time or energy, neglect
physical activities.
Medical and other authorities increasingly stress the desirability
of physical exercise not only for the young and normally active
persons, but for older persons of all ages. Stimulating blood flow
and building muscle tone, if not muscles per se, are considered
highly desirable. Of course, there are countless ways of exercising
-- the usual way being physical exertion by moving one's self
and/or some object. Less strenuous methods include alternate
stretching and relaxation as by yoga exercises; isometronic devices
of various sorts including powered bicycle machines, vibrators,
etc.
Vibrators are useful stimulators of blood flow. However, I accept
the opinion of some authorities that vibrators fail to yield
benefits because the body is normally relaxed when the vibrator is
applied. To obtain maximum benefit from vibration, the body muscles
to which the vibrator is applied must alternately be stressed and
contracted, not necessarily in a strenuous way, but in a rhythmic
continuous manner.
Accordingly, the primary object of this invention is to provide
apparatus for superimposing vibrations upon the body at the very
time that the body muscles are moving to expand and contract them.
By so doing, maximum benefits are achieved without requiring
strenuous efforts. Another object of this invention is to provide
an extremely simple mechanism for achieving this function -- so
simple in fact, that it involves, in its simplest form, the mere
replacement of a standard component with a special component.
SUMMARY OF THE INVENTION
In order to accomplish the foregoing objects, I provide a pulley
exercising device in which the pulley wheel instead of being
circular, is eccentric or polygonal. The pulley cable moves
laterally or radially of the pulley center at a cyclic rate
corresponding to the spacing of the lobes and the speed of movement
of the pulley cable. A lateral movement is imparted to the cable
and the cable tension pulsates. The result is vibration imparted to
the hands or arms manipulating the pulley cable, the intensity of
vibrations corresponding to the amplitude of lateral movement of
the cable.
In one embodiment of the invention, the pulley yoke is hand-held,
and the ends of the cable are conformable stirrups engaged by the
feet. In this embodiment, vibrations are imparted not only to the
feet at the ends of the cable, but also to the arms through the
hand-held pulley yoke. An extremely compact effective exerciser is
provided whereby vibration is imparted to the legs while the legs
are in motion.
BRIEF DESCRIPTION OF THE DRAWINGS
A detailed description of the invention will be made with reference
to the accompanying drawings wherein like numerals designate
corresponding parts in the several figures. These drawings, unless
otherwise indicated, are to scale.
FIG. 1 is a pictorial view of an exerciser incorporating the
present invention.
FIG. 2 is an enlarged sectional view of the pulley and yoke taken
axially of the pulley and along a plane corresponding to line 2--2
of FIG. 1.
FIG. 3 is a fragmentary sectional view of the pulley taken
transversely of the pulley axis to show the configuration of the
seat provided by the pulley, the view being taken along a plane
corresponding to line 3--3 of FIG. 2.
FIG. 4 is a pictorial view illustrating the device of FIG. 1 being
used.
FIG. 5 is a view similar to FIG. 2, but showing a pulley wide
enough to accommodate a cable in the form of a tape or strap.
FIGS. 6, 7 and 8 show various exercising devices utilizing a
non-circular pulley structure.
DETAILED DESCRIPTION
The following detailed description is of the best presently
contemplated modes of carrying out the invention. This description
is not to be taken in a limiting sense but is made merely for the
purpose of illustrating the general principles of the invention
since the scope of the invention is best defined by the appended
claims. Structural and operational characteristics attributed to
forms of the invention first described shall also be attributed to
forms later described, unless such characteristics are obviously
inapplicable or unless specific exception is made.
In FIG. 1, there is illustrated an exercising device including a
pulley assembly 10 and a cable 12.
The pulley assembly 10 includes a block or pulley yoke 14, a pulley
wheel 16 and a bearing pin 18. The yoke 14, which may be made of
molded plactic material has a bifurcated part at one end to receive
the pulley wheel. The bearing pin is force fitted or otherwise
secured to apertured embossments 20 formed on the outer sides of
the bifurcated part.
The pin 18 passes with slight clearance through the bore 22 of the
pulley wheel whereby the pulley wheel is journalled thereon for
rotation.
A short length of rope 24 is attached at opposite ends to the
pulley yoke 14 and a handle bar 26, as by knotting the ends of the
rope.
In the present instance the cable 12 is passed around the pulley
wheel 16. In order to move the cable along the pulley, the ends of
the cable are attached to stirrups 28. In the present instance, the
stirrups are formed as reinforced fabric straps closed to form
loops. The loops are tied to loops formed at the ends of the cable
12. The stirrups are conformable to the bare foot for comfortable
operation thereby.
In use, the handle bar 26 is grasped between the hands as shown in
FIG. 4, and the stirrups are engaged by the feet for pedaling
movement as the user lies on his back. The movement of the cable
tends to twist the pulley as the feet alternately move toward and
away from the user's head. This twisting is permitted by virtue of
the short rope 24.
As the user moves the cable 12 along the pulley wheel 16, a
vibration is imparted. This is achieved by virtue of a non-circular
configuration of the pulley wheel itself as shown in FIG. 3. Thus,
in the present instance, the seat formed by the pulley wheel is
octagonal rather than round. In the present instance, the pulley is
substantially square, providing four equiangularly spaced lobes
30.
The square pulley wheel carries the cable 12 outwardly and
inwardly. In the position shown, the opposite runs of the pulley
are spaced by an amount corresponding to the length of the side of
the square pulley. However, after an eighth of a revolution, the
cable runs will be spaced from each other by an amount
corresponding to the diagonal of the square. The result is a
sidewise movement of the cable and a change in the tension of the
cable all at a rate corresponding to the distance between the lobes
30 and the rate of movement of the cable 12. A gentle and
invigorating vibration is imparted to the legs. In addition, the
vibration is in the present instance transmitted through the yoke
14 to the handle 26 and the arms of the user. A number of
authorities claim that muscle and vascular tone is improved by the
conjoint action of muscle flexure and vibration.
The particular device illustrated in FIGS. 1-4 is exceedingly
compact, foldable into a small package for shipment, storage,
boxing and for transport with the user.
In the form illustrated in FIG. 5, an identical arrangement is
provided except that the pulley wheel is wide to accommodate a
cable in the form of a strap.
FIGS. 6, 7 and 8 illustrate various pulley exercising devices that
may incorporate a non-circular pulley wheel for imparting
vibration. FIG. 6 shows a rowing machine in diagrammatic form. FIG.
7 illustrates a typical wall pulley but in the present instance,
having a non-circular pulley wheel. FIG. 8 illustrates a floor
pulley resisted by a spring rather than by movable weights, the
pulley also being non-circular to impart vibrations.
The pulley wheel can take a variety of configurations. The pulley
lobes need not be uniformly spaced. Optimum results can be achieved
by avoiding a pulley wheel that is either too large or too small.
The number of lobes may be changed so as to keep relatively
constant, the spacing between successive lobes. A single-lobed or
eccentric pulley could be provided if desired. I have found the
square configuration quite satisfactory, the side measure of the
square being about 1 inch. In the form of FIGS. 1-4, the rope 24 is
desirably short enough effectively to transmit vibrations to the
hands. However, the rope must be long enough to allow the pulley to
twist back and forth.
* * * * *