Described herein are embodiments of stationary exercise machines having reciprocating foot and/or hand members, such as foot pedals that move in a closed loop path. Some embodiments can include reciprocating foot pedals that cause a user's feet to move along a closed loop path that is substantially
Described herein are embodiments of stationary exercise machines having reciprocating foot and/or hand members, such as foot pedals that move in a closed loop path. Some embodiments can include reciprocating foot pedals that cause a user's feet to move along a closed loop path that is substantially inclined, such that the foot motion simulates a climbing motion more than a flat walking or running motion. Some embodiments can further include reciprocating handles that are configured to move in coordination with the foot via a linkage to a crank wheel also coupled to the foot pedals. Variable resistance can be provided via a rotating air-resistance based mechanism, via a magnetism based mechanism, and/or via other mechanisms, one or more of which can be rapidly adjustable while the user is using the machine.
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1. A stationary exercise machine, comprising: a frame including an upper support structure;a crank shaft rotatably coupled with the upper support structure and rotatable about a crank axis;first and second connection members that each rotate about a rotation axis that substantially coincides with th
1. A stationary exercise machine, comprising: a frame including an upper support structure;a crank shaft rotatably coupled with the upper support structure and rotatable about a crank axis;first and second connection members that each rotate about a rotation axis that substantially coincides with the crank axis;first and second crank arms coupled to the first and second connection members, respectively, to rotate about the rotation axis of its respective connection member;first and second reciprocating foot members operatively associated with the first and second crank arms, respectively, in such a manner that at least a portion of each of the first and second reciprocating foot members orbits the crank shaft as the crank shaft rotates;first and second foot pedals coupled to the first and second reciprocating foot members, respectively;first and second handles supported by the upper support structure to rotate about a handle axis;a first reciprocating member rotatably coupled to an end of the first handle, and a second reciprocating member rotatably coupled to an end of the second handle;third and fourth connection members operatively associated with the crank shaft and with the first and second connection members, respectively;the third and fourth connection members each define a rotation axis that is parallel to and offset from the crank axis; andthe first and second reciprocating members rotatably coupled to the third and fourth connection members, respectively, to rotate about the rotation axis defined by its respective connection member. 2. A stationary exercise machine comprising: a frame including an upper support structure;a crank shaft rotatably coupled with the upper support structure and rotatable about a crank axis;first and second connection members that each rotate about a rotation axis that substantially coincides with the crank axis;first and second crank arms coupled to the first and second connection members, respectively, to rotate about the rotation axis of its respective connection member;first and second reciprocating foot members operatively associated with the first and second crank arms, respectively, in such a manner that at least a portion of each of the first and second reciprocating foot members orbits the crank shaft as the crank shaft rotates;first and second foot pedals coupled to the first and second reciprocating foot members, respectively;first and second handles supported by the upper support structure to rotate about a handle axis;first and second reciprocating members rotatably coupled to the first and second handles, respectively;third and fourth connection members operatively associated with the crank shaft and with the first and second connection members, respectively;the third and fourth connection members each define a rotation axis that is parallel to and offset from the crank axis;the first and second reciprocating members rotatably coupled to the third and fourth connection members, respectively, to rotate about the rotation axis defined by its respective connection member;a first foot member pivot axis defined by the operable association between the first crank arm and the first reciprocating foot member and a second foot member pivot axis defined by the operable association between the second crank arm and the second reciprocating foot member;a first angle formed between a line defined by the crank axis and the first foot member pivot axis and a line defined by the crank axis and the rotation axis formed by the third connection member is greater than 0 degrees and less than 180 degrees; anda second angle formed between a line defined by the crank axis and the second foot member pivot axis and a line defined by the crank axis and the rotation axis formed by the fourth connection member is greater than 0 degrees and less than 180 degrees. 3. The stationary exercise machine as defined in claim 2, wherein the first and second angles are between approximately 60 degrees and approximately 90 degrees. 4. The stationary exercise machine as defined in claim 3, wherein the first and second angles are approximately 75 degrees. 5. The stationary exercise machine as defined in claim 1, further comprising: at least two spaced-apart plates extending away from the crank axis and each of the plates defining a free end portion; andthe third connection member positioned between the respective free end portions of each of the plates. 6. The stationary exercise machine as defined in claim 1, wherein each rotation axis of the third and fourth connection members orbits the crank axis as the crank shaft rotates. 7. A stationary exercise machine, comprising: a frame including an upper support structure;a drive mechanism rotatably coupled with the upper support structure and rotatable about a crank axis;first and second crank arms each engaging the drive mechanism and rotatable about the crank axis;first and second reciprocating foot members operatively associated with the first and second crank arms, defining a foot member pivot axis, respectively, wherein the first and second reciprocating foot members are coupled to first and second foot pedals, respectively;first and second handles operatively associated with first and second reciprocating members, wherein:the first and second handles rotate about a handle axis supported by the upper support structure;the first and second handles are rotatably coupled to the first and second reciprocating members, respectively, defining a reciprocating axis;the first and second reciprocating members are each rotatably coupled at a lower end to the drive mechanism and rotatable about an offset axis;each of the respective offset axes is parallel to and offset from the crank axis; and whereinthe first and second crank arms are fixed to the drive mechanism at respective positions spaced radially inwardly from the offset axes. 8. A stationary exercise machine as defined in claim 7, wherein each offset axis orbits the crank axis as the drive mechanism rotates. 9. The stationary exercise machine as defined in claim 7, wherein the drive mechanism includes a central portion, opposing outer end portions, and opposing offset portions positioned between the central portion and each opposing end portion, respectively. 10. The stationary exercise machine as defined in claim 9, wherein the offset portions extend diametrically from the crank axis. 11. The stationary exercise machine as defined in claim 9, wherein the offset portions extend away from the crank axis an equal distance. 12. The stationary exercise machine as defined in claim 9, wherein the offset portions extend away from the crank axis different distances. 13. The stationary exercise machine as defined in claim 9, wherein each outer end portion is aligned with the crank axis. 14. The stationary exercise machine as defined in claim 9, wherein: each offset portion includes a pair of spaced-apart plates extending away from the crank axis and each defining free end portions; anda shaft extends between the respective free end portions of the pair of plates. 15. The stationary exercise machine as defined in claim 9, wherein the drive mechanism is an integral one-piece structure. 16. The stationary exercise machine as defined in claim 7, wherein: the drive mechanism includes a central portion and opposing offset portions; andeach of the offset portions includes a shaft extending parallel to the crank axis. 17. The stationary exercise machine as defined in claim 16, wherein the lower end of each reciprocating member rotatably couples to the shaft of one offset portion. 18. The stationary exercise machine as defined in claim 17, wherein the first and second crank arms each engage an opposing end of the drive mechanism. 19. The stationary exercise machine as defined in claim 18, wherein: each opposing end of the drive mechanism defines an outer end portion; andthe first and second crank arms each engage one of the outer end portions. 20. The stationary exercise machine as defined in claim 1, wherein the first and second foot pedals are coupled to first and second ends of the first and second reciprocating foot members, respectively.
Porth,Timothy J., Exercise equipment with automatic adjustment of stride length and/or stride height based upon the heart rate of a person exercising on the exercise equipment.
Lull, Andrew P.; Weier, Keith M.; Krapfl, Zachary D.; Kowalewski, Chester F.; Watt, Jonathan B., Releasable connection mechanism for variable stride exercise devices.
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