IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0492504
(2000-01-27)
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발명자
/ 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
28 인용 특허 :
47 |
초록
▼
An exercise apparatus, a method of using the apparatus, and a method of exercising are disclosed. In one or more embodiments, the exercise apparatus comprises an exercise platform comprising a base and a lid, the platform defining an interior space accessible by moving the lid from a closed to an op
An exercise apparatus, a method of using the apparatus, and a method of exercising are disclosed. In one or more embodiments, the exercise apparatus comprises an exercise platform comprising a base and a lid, the platform defining an interior space accessible by moving the lid from a closed to an open position with respect to the base, at least one handle associated with the platform for use by a user in moving the exercise apparatus, at least one wheel movably mounted to the base and permitting the platform to be rolled along a surface, at least one riser for use in supporting the platform upon a surface to increase a height thereof and sized to fit within the interior space when not in use, at least one resistive element for selective attachment to the platform for use in an exercise by a user, at least one mount associated with the platform to which the at least one resistive element may be attached, and at least one hand/foot peg for use with the platform.
대표청구항
▼
An exercise apparatus, a method of using the apparatus, and a method of exercising are disclosed. In one or more embodiments, the exercise apparatus comprises an exercise platform comprising a base and a lid, the platform defining an interior space accessible by moving the lid from a closed to an op
An exercise apparatus, a method of using the apparatus, and a method of exercising are disclosed. In one or more embodiments, the exercise apparatus comprises an exercise platform comprising a base and a lid, the platform defining an interior space accessible by moving the lid from a closed to an open position with respect to the base, at least one handle associated with the platform for use by a user in moving the exercise apparatus, at least one wheel movably mounted to the base and permitting the platform to be rolled along a surface, at least one riser for use in supporting the platform upon a surface to increase a height thereof and sized to fit within the interior space when not in use, at least one resistive element for selective attachment to the platform for use in an exercise by a user, at least one mount associated with the platform to which the at least one resistive element may be attached, and at least one hand/foot peg for use with the platform. e mechanical significance. Pogo sticks with enclosed coil springs are shown by Hohberger (U.S. Pat. No. 2,712,443 in 1955), Rapaport (U.S. Pat. No. 2,871,016 in 1957) and Gaberson (U.S. Pat. No. 3,116,061 in 1963). Hohberger assembles his molded frame permanently around the coil. Rapaport places a flexible plastic cover around the spring. Gaberson places the spring inside the piston, and adds a frame-attached plunger to compress it. All of these designs are limited by the modest capacity of their steel springs. Air-spring pogo sticks have achieved commercialization using low-pressure air springs, the air being contained either in a ball-like bladder or in a block of low-density plastic foam. Such devices are successful as children's novelties but are not well-suited to more demanding applications due to the bulk of the entrapped air column. High pressure air springs are theoretically capable of achieving any desired level of performance, and also hold the promise of straightforward adjustability. Their use in pogo sticks was suggested by Woodall (U.S. Pat. No. 2,865,633 in 1958), who stressed the benefit of adjustability, and others (Bourcier de Carbon in U.S. Pat. No. 2,899,685 in 1959; Guin in U.S. Pat. No. 3,351,342 in 1967). There is, however, a practical problem: the energy stored is present in the form of heat at the bottom of the stroke - and due to the relatively large amount of energy and relatively small amount of gas, temperatures of several hundreds of degrees are attained. A leading manufacturer has told me of experiments which ended in dismay when the cylinder became hot enough to burn the jumper's legs. Elastomer-powered pogo designs appear in Gaffney and Weaver (in U.S. Pat. No. 2,783,997 in 1957). Their primary concern was with jumping stilts; their pogo design was minimally modified from a conventional tubular design, and had its rubber mounted externally in two bundles, one on either side of the frame tube. These bundles would have made the upper mount about three inches wide - and this unshielded object would rake up and down between the knees and thighs of the jumper on each stroke; if the rider attempted to ride bowlegged to avoid it, his contact with and ability to control the stick (as well as his concentration) would suffer. Bourcier de Carbon (cited above) shows an elastomer-powered stilt, and appears to be the first in this context to mention that rubber is a more efficient spring material than steel and can provide higher levels of performance. His upper mount is exposed, which is viable for a stilt; he does not show a ridable design. Hoffmeister (U.S. Pat. No. 3,065,962 in 1962) gives a quantitative statement of the startling superiority of rubber: 18 pounds of steel, he points out, can be replaced by 3.75 ounces of rubber. His mechanical design (which is for jumping stilts), however, is extraordinarily unsafe. He attaches the bottom of the tension spring to the top of the frame tube (rather than the bottom, as shown by Gaffney and Bourcier de Carbon). This results in rod ends projecting past the rider's knees and moving upward relative to the rider as he lands. A jumper landing in a skier's tuck position will strike the ends of the piston rods with his chest at up to 11 mph. Prueitt (U.S. Pat. No. 4,449,256 in 1984) cites the scalability of rubber-band springs as a virtue of his design. The design is for multi-piston jumping stilts with exposed piston-heads. Regarding scissor-lift bouncing apparatuses, a second Hoffmeister patent (U.S. Pat. No. 3,205,596 in 1965) shows several forms of an elastomer-powered jumping shoe which employs multi-bar linkages. One form has a scissor-lift mechanism. The scissor-lift, however, is mounted with its long axis horizontal, attached to the shoe platform by a central fixed hinge and two sliding hinges. This arrangement affords very limited travel; indeed, Hoffmeister cites a gain ratio in which a long spring motion powers a short vertical travel as a goal. Another
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