CA1125328A - Physical exercising device - Google Patents
Physical exercising deviceInfo
- Publication number
- CA1125328A CA1125328A CA359,862A CA359862A CA1125328A CA 1125328 A CA1125328 A CA 1125328A CA 359862 A CA359862 A CA 359862A CA 1125328 A CA1125328 A CA 1125328A
- Authority
- CA
- Canada
- Prior art keywords
- handles
- spring
- central tube
- tubes
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Abstract
PHYSICAL EXERCISING DEVICE
ABSTRACT OF THE DISCLOSURE
A physical exerciser of the type having a spring enclosed by a telescopic tubular system so that contraction of the system is resisted by the spring. Flexible connecting elements connect the ends of the system on opposite sides so that pushing exercises can be performed by pushing handles at the ends together and pulling exercises by pulling the flexible elements apart. According to the preferred form of the invention each flexible connecting element is continuous in the form of two runs guided round one or two rolling members mounted in handles at the ends of the system. Either one or both runs can be pulled given variation in the force and movement distance. According to another feature a greater contraction distance of the telescopic system is achieved by an arrangement having a central tube beyond the ends of which the ends of the spring extend and further end tubes accommodating the ends of the spring and connected to the handles so that the majority of the interior of the handles also accommodates part of the telescopic movement. The outer surfaces of the end tubes have a grip surface formed thereon. In one form the spring is formed by two separate springs each having one end retained by a spring retaining member in the central tube and the other end extending within a handle around a spring guide member.
ABSTRACT OF THE DISCLOSURE
A physical exerciser of the type having a spring enclosed by a telescopic tubular system so that contraction of the system is resisted by the spring. Flexible connecting elements connect the ends of the system on opposite sides so that pushing exercises can be performed by pushing handles at the ends together and pulling exercises by pulling the flexible elements apart. According to the preferred form of the invention each flexible connecting element is continuous in the form of two runs guided round one or two rolling members mounted in handles at the ends of the system. Either one or both runs can be pulled given variation in the force and movement distance. According to another feature a greater contraction distance of the telescopic system is achieved by an arrangement having a central tube beyond the ends of which the ends of the spring extend and further end tubes accommodating the ends of the spring and connected to the handles so that the majority of the interior of the handles also accommodates part of the telescopic movement. The outer surfaces of the end tubes have a grip surface formed thereon. In one form the spring is formed by two separate springs each having one end retained by a spring retaining member in the central tube and the other end extending within a handle around a spring guide member.
Description
.
1 BACKGROUND OF ~HE INVENTION
In our ~anadian Paten~ No. 689~069,Kolbel,June 23,1961,there is described a spring type exerciser involving a telescopic arrangement including a spring so that as the telescopic system is collapsed the spring is placed under compression;
also an endless rope is connected to the handles at the ends of the telescopic system so that as two runs of the rope are pulled apart the spring is again placed und~r compression.
In use certain exercises comprise squeezing the spring by applying force to the handles at each end and certain exercises comprise pulling the two runs of rope apart and again placing the spring under compression. In this way the exercises bring into play diferent muscles involving forces of both compression and tension while at the same time the work by the person using the exerciser always acts on the spring to place it under compression.
An object of the present invention is to provide a physical exerciser of the type described in our Patent No.
689,069 which is simpli~ied in construction and allows the user the possibility of carrying out a wider range of exercises.
It is another object of the invention to provide an exerciser which give a greater amount of contraction for the same initial length of telescopic sys~em.
It is still a further object of the in'vention to produce an exerciser which allows the user to vary the movement distance during an exercise and to vary the strength required to move the tension elements during exercise.
SUMMARY OF THE INVENTION
Accordingly, the present invention provides a physical exerciser comprising an elongated telescopic system having en~s, ' 1 arrows a considerable portion of the inner runs, that is those nearest to the tubes, runs around the sheaves so that the outer runs are extended. By this appern of movement a block and tackle effect is obtained which reduces the force to be applied for compressiny the spring while at the same time the movement distance is increased. This is of greater importance for many exercies than a short distance with a high tension force. A stepped change in tensile force can be obtained by first gripping both outer runs only, then both runs of one element and the outer run of the other, then both runs of both elements.
In addition to large movement distances being ohtainable more exercies can be carried out in tension training. For example, between the feet and the upper body exercisPs can be carried out which are not possible on exercisers having a smaller movement distance. For example, one can wrap one strand of cord round the nape of the neck while the other strand is around the feet. Furthermore, compression and tension exercises are possible simultaneously, for example by pulling the appara~us between one foot and the nape of the neck in a sitting position with simultaneous pressure support by both hands. The number of such combina-tion exercises is more than double that possible with the exerciser according to the aforesaid Canadian Patent 689,06 A ring 23 slides on the exterior of the tube 12 pushed by the end of a tube 13 and indicated the deyree of compression on a scale marked on the exterior of the "~" î
tube 12.
A further feature of the invention is the formation on the outer surfaced of the tubes 13 of a grip surface as 3 .. . .
, 32~3 1 seen at 26. This allows an important compression exercise with the hands gripping parallel to the telescopic system.
The serrated exterior of the tubes extends for exa~ple for a 17 cm length of each tube, and for the first time renders possible gripping with the hands in the position parallel to the exerciser. This allows additional classes of muscles, hitherto not loaded, to be exercised.
The design of the telescopic system allows easy assembly by merely slipping the rings 18 over the central tube 12, pushing the end tubes 13 onto the central tube and pushing the rings 18 back over the ends of the end tubes to assemble the whole telescopic system. In addition the design of the handles allow almost their whole lengths to contribute to the telescopic movement so that the movement obtainable with compression exercies is 50% greater than with the exerciser of the aforesaid Canadian Patent 689,069, for the same initial rest length. ~his is best seen in Figure 3 where the central tube 12 nearly abu~s against the interior of the end of the handle 11.
The exerciser of Figures 4 to 8 comprises a ~elescopic system 30 having hollow handles 31 at i~s ends. The ~elescopic system comprises a main central tube 32 and two end tubes 33 telescopi~ally slidable on the central tube. Each end tube 33 is integral with ~he main part of its associated handle-31 formed by two outer side walls 34, 35 and connecting ribs 36, and end of each handle is closed by a separately fabricated end plate 37. The resilient biassing means in this ~, .
embodiment is formed by two springs 38. It will be appreciated that although only one end of the exerciser is shown the other end is similar, so that only one of the springs 38 and Y
: . ; .
.
~53~
1 the exerciser of Figure 4 to 7.
Referring to Figures 1 to 3, a physical exerciser comprises an elongated telescopic system 10 having hollow handles 11 at its ends, the system being contractible longitudinally by the application of manual pressure.
In known manner the handles may be formed with finger indentations to aid gripping. The telescopic system comprises a main central tube 12 and two end tubes or shafts 13 integral at their outer ends with the handles 11. A resilient biassing means in the form of helical spring 14 extends within the central tube with both its ends extending beyond the central tube into the tubes 13 and abutting against the ends of the hollow interior of the handles. The ends of the central tube 12 are outwardly flanged at 15 and the inner ends of the end tubes 13 are inwardly flanged at 16 so that interengagement of flanges 15 and 16 prevents the end tubes from disengaging from the central tube. The inner portions of the tubes 13 are of bifurcated form as a result of two slits 16 tonly one of which is seen in Fig.l)extending for pQrt of their lengtns.
. _ , ~his allows the end tubes 13 to be expanded slightly so that the flange 16 can ride over the flange 15 for initial assembly. A simple end riny 18 is then pushed over each end to retain it against such expansion-in the assembled condition. Extra guide tubes 19 inte~ral with the handles and coaxilly within the tubes 13 fit inside the tube 12 and provide additional strength and guidance. A modified form of these is shown at l9A in Figure 3..
: ,~
.
,.
~.~ Z5'~2~
1 ~- The handles 11 extend outwardly of the tubes 13 in ; a direction normal to the longitudinal axis of the telescopi~
system and at each side carry a rolling member in the form sf a sheave 20, mounted across a groove 21 opening to the side of the handle. Two tension elements 22 located on opposite sides of the telescopic system connect the ends of the system.
Each tension element takes the form of a substantially inextensible endless cord which extends in two runs between the handles and passes around a pair of sheaves. These elements can be, for example, of plastic coated wire or any form of rope, they can ke flat or of round cross section and they may be initially limp or under slight tension in the rest position of the exerciser. Each tension element could extend round a single sheave or other guide element and have both its ends fastened to one handle so that it is effectively endless.
The tension elements can be gripped approximately at their mid points and pulled apart in the direction of arrows 25 this causing the handles to move towards each other and compress the spring. The movement distance which is available for an exercise is determined by the distance which the telescopic system can contract in conjunction with the length of the tension elements between the handles. However, by the use of a double run of cord this distance and the force required can be varied by the person doing exercises. If both runs of each tension element are gripped, then maximum for~e will be required for a relatively small movement. If only the outermost runs of the tension elements are gripped the movement distance increases, since when pulling apart in the direction of the , - 6 -1 -- arrows a considerable portion of the inner runs, that ~ 5 those nearest to the tubes, runs around the sheaves so that the ,~ outer runs are extended. By this pattern of movement a block and tackle effect is obtained which reduces the foxce to be applied for compressing the spring while at the same time the movement- distance is increased. This is of greater importance ~ox many exercies than a short distance with a high tension force. A stepped change in tensile force can be obtained by first gripping both outer runs only, then both runs of one element and the outer run of the other, then both runs of both elements.
In addition to large movement distances being obtainable more exercies can be carried out in tension -training. For example, between the feet and the upper body exercises can be carried out which are not possible on exercisers having a smaller movement distance. For example, one can wrap one strand of cord round the nape of the neck while the other strand is around the feet. Furthermore, compression and tension exercises ar~ p~ssible simultaneously~
for example by pulling ~he apparatus between one foot and the nape of the neck in a sitting position with simultaneous pressure support by both hands. The number of such combina-tion exercises is more than aouble that possible with the exerciser according to Patent Specification No. 3268225.
A ring 23 slides on the exterior of the tube 12 pushed by the end of a tube 13 and indicated the degree of compression on a scale marked on the exterior of the tube 12.
A further feature of the invention is the formation on the outer surfac~s of the tubes 13 of ~ grip surface as ,; ' .
r>~
1 seen at 26. This allows an important compression exercise 1th the hands gripping parallel to the telescopic system.
The serrated exterior of the tubes extends for exa~ple for a 17 cm length of each tube, and for the first time renders possi~le gripping with the hands in the position parallel to the exerciser. This allows additional classes of muscles, hitherto not loaded, to be exercised.
The design of the telescopic system allows easy assembly by merely slipping the rings 18 over the central tube 12, pushing the end tubes 13 onto the central tube and pushing the rings 18 back over the ends of the end tubes to assemble the whole telescopic system. In addition the design of the handles allow almost their whole lengths to contribute to the telescopic movement so that the movement obtainable with compression exercies is 50~ greater than with the exerciser of Patent Specification No. 3268225 for the same initial rest length. This is best seen in Figure 3 where the central tube 12 nearly abuts against the interior of the end of the handle 11.
The exerciser of Figures 4 to 8 comprises a telescopic system 30 having hollow handles 31 at its ends. The telescopic system comprises a main central tube 32 and two end tubes 33 telescopically slidable on the central tube. Each end tube 33 is integral with the main part of its associated handle 31 formed by ~wo outer side walls 34, 35 and connecting ribs 36, and end of each handle is closed by a separately fabricated end plate 37. The resilient ~iassing means in this embodiment is formed by two springs 3B It will be appreciated that although only one end of the exerciser i5 shown the other end is similar, so that only one of the springs 3B and - 1 ~ one tube 33 and one handle 31 are shown and need to be des~ribed.
The tube 33 has its outer end, that is the end remote from the central tube 32, turned in to form a partially closed end 40 and then turned in again to provide an inwardly projecting annulus 41, the inner end 42 of which is counterbored to provide ; an annular shoulder 43. The end plate 37 has an inwardly pro-jecting annulus 44 with an outwardly turned lip 45 so that is a push fit in the annulus 41 with the lip engaging over the shoulder 43 to retain it. The end plate 37 is also formed with bearing parts ~7 which are a push fit between the side walls 34, 35 of the handles. These bearing parts carry pins 48 on which are rotatably mounted rollers 50.
A cruciform sectioned spring guide 51 has a disc 52 at its outer end from the outer side of which projects a boss 53 which is a push fit in the annulus 44 of the end plate ; with the disc bearing against the end surfaces of the annulae 41 and 44. The spring guide 51 thus extends coaxially within the tube 33 and had its inner end within the central tube 32 in the expanded condition of the exerciser. Within the end of the central tube 32 is located a spring retaining tubular member 54. This has an outer diameter adjacent its outer end which is a close fit within the tube 32 and has an outwardly turned flanye 55 which abuts against the end of tube 32. The retaining member 54 tapers inwardly slightly towards its inner end which is turned over to provide a spring retaining end surface 57. The spring 38 fits over the spring guide 51 and within the retaining member 54 with its ends abutting the disc 52 and the retaining surface 57. The spring 38 has a slight outward taper towards its inner end.
As seen in Figure 6 the inner surface of the end _ g ;~ ' .
., - :
, 1 ~ tube 33 is formPd at four substantially e~ui-angularly spaced . points with inwardly projecting rib members 58. At one Siae instead of a single rib 58 there are two spaced ribs 58A and 58B. The central tube 32 has a groove 60 formed in its exterior surface along its length in which groove are received the ribs 58A and 58B. This prevents relative rotation of the tube 33 and tube 32. The tube 33 tapers outwardly to increase its outer diameter towards the centre of the exerciser and the depth of the ribs 58 increases in this direction to retain the internal diameter of the notional cylinder defined by the ribs substantially constant. The inner end of tube 33 is outwardly flanged at 51.
In the contracted condition of the exerciser the ends of the spring guide 54 substantially abuts the bases of the tubes 33 so that the majority of the handles contribute to the telescopic movement as described in the embodiment of Figures 1 to 3.
As in the embodiment of Figures 1 to 3, two end-less tension elements each having two runs connect the ends of the telescopic system on opposite sides thereof. In this embodiment each tension element 62 is in the ~orm of a band of webbing material which passes round a pair of the rollers 50. The sides of the handles are open thus effec-tively defining grooves to accommodate the rollers and tension elements. As described with reference to the embodi-ment of Figures 1 to 3 either one or both of the runs of these tension elements can be gripped and pulled to provide the variation in movement distance and force for doing exercises. The tension elements are taut in the exapanded condi~ion of the exerciser as shown and prevent the end tubes ~5~
1 `- 33 from coming off the central tube 32.
A grip surface, as seen at 63, is provided on the exterior surface of the tubes ~3. A ring 64 similar to the ring 23 slides on the exterior of the tube 32.
It will be apprecia~ed that the use of tension elements having a double run can be applied to telescopic systems, comprising only two tubes or more than three tubes.
It could be applied to a telescopic system which had two or more coupled sets of telescoping tubes or a system which was contractable and expandable without using telescoping tubes.
The spring biassing means may be replaced by other suitable resilient means such as elastic balls or a pneumatic assembly. The biassing means need not be within the telescopic system but could for example be a pair of stiffly flexible straight or bowed rods connecting the ends of the system and themselves capable of being grasped and pulled apart.
The flexible elements need not pass through the handles but could be secured to separate mounting or guide members carried by the telescoping system or could pass through or over the ends of the tubes.
:
,, .
'
1 BACKGROUND OF ~HE INVENTION
In our ~anadian Paten~ No. 689~069,Kolbel,June 23,1961,there is described a spring type exerciser involving a telescopic arrangement including a spring so that as the telescopic system is collapsed the spring is placed under compression;
also an endless rope is connected to the handles at the ends of the telescopic system so that as two runs of the rope are pulled apart the spring is again placed und~r compression.
In use certain exercises comprise squeezing the spring by applying force to the handles at each end and certain exercises comprise pulling the two runs of rope apart and again placing the spring under compression. In this way the exercises bring into play diferent muscles involving forces of both compression and tension while at the same time the work by the person using the exerciser always acts on the spring to place it under compression.
An object of the present invention is to provide a physical exerciser of the type described in our Patent No.
689,069 which is simpli~ied in construction and allows the user the possibility of carrying out a wider range of exercises.
It is another object of the invention to provide an exerciser which give a greater amount of contraction for the same initial length of telescopic sys~em.
It is still a further object of the in'vention to produce an exerciser which allows the user to vary the movement distance during an exercise and to vary the strength required to move the tension elements during exercise.
SUMMARY OF THE INVENTION
Accordingly, the present invention provides a physical exerciser comprising an elongated telescopic system having en~s, ' 1 arrows a considerable portion of the inner runs, that is those nearest to the tubes, runs around the sheaves so that the outer runs are extended. By this appern of movement a block and tackle effect is obtained which reduces the force to be applied for compressiny the spring while at the same time the movement distance is increased. This is of greater importance for many exercies than a short distance with a high tension force. A stepped change in tensile force can be obtained by first gripping both outer runs only, then both runs of one element and the outer run of the other, then both runs of both elements.
In addition to large movement distances being ohtainable more exercies can be carried out in tension training. For example, between the feet and the upper body exercisPs can be carried out which are not possible on exercisers having a smaller movement distance. For example, one can wrap one strand of cord round the nape of the neck while the other strand is around the feet. Furthermore, compression and tension exercises are possible simultaneously, for example by pulling the appara~us between one foot and the nape of the neck in a sitting position with simultaneous pressure support by both hands. The number of such combina-tion exercises is more than double that possible with the exerciser according to the aforesaid Canadian Patent 689,06 A ring 23 slides on the exterior of the tube 12 pushed by the end of a tube 13 and indicated the deyree of compression on a scale marked on the exterior of the "~" î
tube 12.
A further feature of the invention is the formation on the outer surfaced of the tubes 13 of a grip surface as 3 .. . .
, 32~3 1 seen at 26. This allows an important compression exercise with the hands gripping parallel to the telescopic system.
The serrated exterior of the tubes extends for exa~ple for a 17 cm length of each tube, and for the first time renders possible gripping with the hands in the position parallel to the exerciser. This allows additional classes of muscles, hitherto not loaded, to be exercised.
The design of the telescopic system allows easy assembly by merely slipping the rings 18 over the central tube 12, pushing the end tubes 13 onto the central tube and pushing the rings 18 back over the ends of the end tubes to assemble the whole telescopic system. In addition the design of the handles allow almost their whole lengths to contribute to the telescopic movement so that the movement obtainable with compression exercies is 50% greater than with the exerciser of the aforesaid Canadian Patent 689,069, for the same initial rest length. ~his is best seen in Figure 3 where the central tube 12 nearly abu~s against the interior of the end of the handle 11.
The exerciser of Figures 4 to 8 comprises a ~elescopic system 30 having hollow handles 31 at i~s ends. The ~elescopic system comprises a main central tube 32 and two end tubes 33 telescopi~ally slidable on the central tube. Each end tube 33 is integral with ~he main part of its associated handle-31 formed by two outer side walls 34, 35 and connecting ribs 36, and end of each handle is closed by a separately fabricated end plate 37. The resilient biassing means in this ~, .
embodiment is formed by two springs 38. It will be appreciated that although only one end of the exerciser is shown the other end is similar, so that only one of the springs 38 and Y
: . ; .
.
~53~
1 the exerciser of Figure 4 to 7.
Referring to Figures 1 to 3, a physical exerciser comprises an elongated telescopic system 10 having hollow handles 11 at its ends, the system being contractible longitudinally by the application of manual pressure.
In known manner the handles may be formed with finger indentations to aid gripping. The telescopic system comprises a main central tube 12 and two end tubes or shafts 13 integral at their outer ends with the handles 11. A resilient biassing means in the form of helical spring 14 extends within the central tube with both its ends extending beyond the central tube into the tubes 13 and abutting against the ends of the hollow interior of the handles. The ends of the central tube 12 are outwardly flanged at 15 and the inner ends of the end tubes 13 are inwardly flanged at 16 so that interengagement of flanges 15 and 16 prevents the end tubes from disengaging from the central tube. The inner portions of the tubes 13 are of bifurcated form as a result of two slits 16 tonly one of which is seen in Fig.l)extending for pQrt of their lengtns.
. _ , ~his allows the end tubes 13 to be expanded slightly so that the flange 16 can ride over the flange 15 for initial assembly. A simple end riny 18 is then pushed over each end to retain it against such expansion-in the assembled condition. Extra guide tubes 19 inte~ral with the handles and coaxilly within the tubes 13 fit inside the tube 12 and provide additional strength and guidance. A modified form of these is shown at l9A in Figure 3..
: ,~
.
,.
~.~ Z5'~2~
1 ~- The handles 11 extend outwardly of the tubes 13 in ; a direction normal to the longitudinal axis of the telescopi~
system and at each side carry a rolling member in the form sf a sheave 20, mounted across a groove 21 opening to the side of the handle. Two tension elements 22 located on opposite sides of the telescopic system connect the ends of the system.
Each tension element takes the form of a substantially inextensible endless cord which extends in two runs between the handles and passes around a pair of sheaves. These elements can be, for example, of plastic coated wire or any form of rope, they can ke flat or of round cross section and they may be initially limp or under slight tension in the rest position of the exerciser. Each tension element could extend round a single sheave or other guide element and have both its ends fastened to one handle so that it is effectively endless.
The tension elements can be gripped approximately at their mid points and pulled apart in the direction of arrows 25 this causing the handles to move towards each other and compress the spring. The movement distance which is available for an exercise is determined by the distance which the telescopic system can contract in conjunction with the length of the tension elements between the handles. However, by the use of a double run of cord this distance and the force required can be varied by the person doing exercises. If both runs of each tension element are gripped, then maximum for~e will be required for a relatively small movement. If only the outermost runs of the tension elements are gripped the movement distance increases, since when pulling apart in the direction of the , - 6 -1 -- arrows a considerable portion of the inner runs, that ~ 5 those nearest to the tubes, runs around the sheaves so that the ,~ outer runs are extended. By this pattern of movement a block and tackle effect is obtained which reduces the foxce to be applied for compressing the spring while at the same time the movement- distance is increased. This is of greater importance ~ox many exercies than a short distance with a high tension force. A stepped change in tensile force can be obtained by first gripping both outer runs only, then both runs of one element and the outer run of the other, then both runs of both elements.
In addition to large movement distances being obtainable more exercies can be carried out in tension -training. For example, between the feet and the upper body exercises can be carried out which are not possible on exercisers having a smaller movement distance. For example, one can wrap one strand of cord round the nape of the neck while the other strand is around the feet. Furthermore, compression and tension exercises ar~ p~ssible simultaneously~
for example by pulling ~he apparatus between one foot and the nape of the neck in a sitting position with simultaneous pressure support by both hands. The number of such combina-tion exercises is more than aouble that possible with the exerciser according to Patent Specification No. 3268225.
A ring 23 slides on the exterior of the tube 12 pushed by the end of a tube 13 and indicated the degree of compression on a scale marked on the exterior of the tube 12.
A further feature of the invention is the formation on the outer surfac~s of the tubes 13 of ~ grip surface as ,; ' .
r>~
1 seen at 26. This allows an important compression exercise 1th the hands gripping parallel to the telescopic system.
The serrated exterior of the tubes extends for exa~ple for a 17 cm length of each tube, and for the first time renders possi~le gripping with the hands in the position parallel to the exerciser. This allows additional classes of muscles, hitherto not loaded, to be exercised.
The design of the telescopic system allows easy assembly by merely slipping the rings 18 over the central tube 12, pushing the end tubes 13 onto the central tube and pushing the rings 18 back over the ends of the end tubes to assemble the whole telescopic system. In addition the design of the handles allow almost their whole lengths to contribute to the telescopic movement so that the movement obtainable with compression exercies is 50~ greater than with the exerciser of Patent Specification No. 3268225 for the same initial rest length. This is best seen in Figure 3 where the central tube 12 nearly abuts against the interior of the end of the handle 11.
The exerciser of Figures 4 to 8 comprises a telescopic system 30 having hollow handles 31 at its ends. The telescopic system comprises a main central tube 32 and two end tubes 33 telescopically slidable on the central tube. Each end tube 33 is integral with the main part of its associated handle 31 formed by ~wo outer side walls 34, 35 and connecting ribs 36, and end of each handle is closed by a separately fabricated end plate 37. The resilient ~iassing means in this embodiment is formed by two springs 3B It will be appreciated that although only one end of the exerciser i5 shown the other end is similar, so that only one of the springs 3B and - 1 ~ one tube 33 and one handle 31 are shown and need to be des~ribed.
The tube 33 has its outer end, that is the end remote from the central tube 32, turned in to form a partially closed end 40 and then turned in again to provide an inwardly projecting annulus 41, the inner end 42 of which is counterbored to provide ; an annular shoulder 43. The end plate 37 has an inwardly pro-jecting annulus 44 with an outwardly turned lip 45 so that is a push fit in the annulus 41 with the lip engaging over the shoulder 43 to retain it. The end plate 37 is also formed with bearing parts ~7 which are a push fit between the side walls 34, 35 of the handles. These bearing parts carry pins 48 on which are rotatably mounted rollers 50.
A cruciform sectioned spring guide 51 has a disc 52 at its outer end from the outer side of which projects a boss 53 which is a push fit in the annulus 44 of the end plate ; with the disc bearing against the end surfaces of the annulae 41 and 44. The spring guide 51 thus extends coaxially within the tube 33 and had its inner end within the central tube 32 in the expanded condition of the exerciser. Within the end of the central tube 32 is located a spring retaining tubular member 54. This has an outer diameter adjacent its outer end which is a close fit within the tube 32 and has an outwardly turned flanye 55 which abuts against the end of tube 32. The retaining member 54 tapers inwardly slightly towards its inner end which is turned over to provide a spring retaining end surface 57. The spring 38 fits over the spring guide 51 and within the retaining member 54 with its ends abutting the disc 52 and the retaining surface 57. The spring 38 has a slight outward taper towards its inner end.
As seen in Figure 6 the inner surface of the end _ g ;~ ' .
., - :
, 1 ~ tube 33 is formPd at four substantially e~ui-angularly spaced . points with inwardly projecting rib members 58. At one Siae instead of a single rib 58 there are two spaced ribs 58A and 58B. The central tube 32 has a groove 60 formed in its exterior surface along its length in which groove are received the ribs 58A and 58B. This prevents relative rotation of the tube 33 and tube 32. The tube 33 tapers outwardly to increase its outer diameter towards the centre of the exerciser and the depth of the ribs 58 increases in this direction to retain the internal diameter of the notional cylinder defined by the ribs substantially constant. The inner end of tube 33 is outwardly flanged at 51.
In the contracted condition of the exerciser the ends of the spring guide 54 substantially abuts the bases of the tubes 33 so that the majority of the handles contribute to the telescopic movement as described in the embodiment of Figures 1 to 3.
As in the embodiment of Figures 1 to 3, two end-less tension elements each having two runs connect the ends of the telescopic system on opposite sides thereof. In this embodiment each tension element 62 is in the ~orm of a band of webbing material which passes round a pair of the rollers 50. The sides of the handles are open thus effec-tively defining grooves to accommodate the rollers and tension elements. As described with reference to the embodi-ment of Figures 1 to 3 either one or both of the runs of these tension elements can be gripped and pulled to provide the variation in movement distance and force for doing exercises. The tension elements are taut in the exapanded condi~ion of the exerciser as shown and prevent the end tubes ~5~
1 `- 33 from coming off the central tube 32.
A grip surface, as seen at 63, is provided on the exterior surface of the tubes ~3. A ring 64 similar to the ring 23 slides on the exterior of the tube 32.
It will be apprecia~ed that the use of tension elements having a double run can be applied to telescopic systems, comprising only two tubes or more than three tubes.
It could be applied to a telescopic system which had two or more coupled sets of telescoping tubes or a system which was contractable and expandable without using telescoping tubes.
The spring biassing means may be replaced by other suitable resilient means such as elastic balls or a pneumatic assembly. The biassing means need not be within the telescopic system but could for example be a pair of stiffly flexible straight or bowed rods connecting the ends of the system and themselves capable of being grasped and pulled apart.
The flexible elements need not pass through the handles but could be secured to separate mounting or guide members carried by the telescoping system or could pass through or over the ends of the tubes.
:
,, .
'
Claims (5)
1. A physical exerciser comprising an elongate telescopic system containing resilient means arranged to resist contraction of said system, said system comprising a central tube and a pair of end tubes, each end tube having a handle secured at its outer end, said end tubes being slidably and telescopically mounted at opposite ends of said central tube, said handles being hollow beyond said end tubes and forming a continuous extension of said end tubes and said telescopic system, end portions of said central tube extending beyond said end tube outer ends at substantial contraction, said handles receiving therewithin said extended portions of said central tube at substantial contraction, and flexible tension means connecting said ends of said system such that pulling of the tension means away from the system tends to contract the system.
2. The physical exerciser of claim 1, where the external lateral surfaces of said end tubes are formed with a grip surface thereon.
3. A physical exerciser according to Claim 1 or 2, wherein said flexible tension means are located on opposite side of said system.
4. A physical exerciser according to Claim 1 or 2, wherein said central tube extends into said handles for a major portion of the length of each respective handle, when said exerciser is in the position of maximum compression.
5. A physical exerciser according to Claim 1 or 2, wherein said resilient means extends through said central tube and said end tubes, into said handles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA359,862A CA1125328A (en) | 1977-09-09 | 1980-09-08 | Physical exercising device |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB37820/77A GB1584650A (en) | 1977-09-09 | 1977-09-09 | Physical exercising device |
| GB37820/77 | 1977-09-09 | ||
| CA297,684A CA1125327A (en) | 1977-09-09 | 1978-02-24 | Physical exercising device |
| CA359,862A CA1125328A (en) | 1977-09-09 | 1980-09-08 | Physical exercising device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1125328A true CA1125328A (en) | 1982-06-08 |
Family
ID=27165527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA359,862A Expired CA1125328A (en) | 1977-09-09 | 1980-09-08 | Physical exercising device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1125328A (en) |
-
1980
- 1980-09-08 CA CA359,862A patent/CA1125328A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |