# US 2018/0021655 A1 · Exercise Machine Rail System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0021655 A1 - Document ID: US20180021655A1 - Status: Published application - Kind: A1 - Application number: 15/722,700 - Filed: 2017-10-02 - Published: 2018-01-25 - Earliest claimed: 2014-06-17 - Assignees: Lagree Technologies, Inc. - Applicants: Lagree Technologies, Inc. - Inventors: Sebastien Anthony Louis Lagree - Web page: https://patentgrep.com/patent/US20180021655A1 ## CPC - A63B 71/0054: {Features for injury prevention on an apparatus, e.g. shock absorbers (mats or the like for absorbing shocks for jumping A63B6/00)} - A63B 21/00061: {Replaceable resistance units of different strengths, e.g. for swapping} - A63B 21/023: {Wound springs} - A63B 21/0428: {the ends moving relatively by linear reciprocation} - A63B 21/055: extension element type - A63B 21/151: {Using flexible elements for reciprocating movements, e.g. ropes or chains} - A63B 21/154: {using special pulley-assemblies} - A63B 21/4031: {with parts of the bench moving against a resistance during exercise} - A63B 21/4035: {for operation by hand} - A63B 21/4045: {Reciprocating movement along, in or on a guide (weights moving along or in guiding means A63B21/06; for cardio-training A63B22/201)} - A63B 23/0222: {moving torso and lower limbs} - A63B 2208/0219: on hands and knees - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract An exercise machine rail system for improved exerciser mounting and dismounting, improved functional ergonomics, and reduced risk of exerciser injury when using an exercise machine. The exercise machine rail system generally includes either two rails in close relationship which are linked together via connectors or a singular rail. Bias members are disclosed as either extending along either outer side of the rails, internally to the rail, or underneath the rail. Due to the narrow nature of the rails used by the present invention, an exerciser is able to mount and dismount the exercise machine easily and efficiently. ## Claims ### Claim 1 An exercise machine, comprising: a frame having a first end, a second end, a first rail and a second rail, wherein the first rail has a first interior side and a first exterior side, wherein the second rail has a second interior side which faces towards the first rail and a second exterior side which faces away from the first rail, wherein the second rail extends parallel with respect to the first rail, and wherein the first interior side of the first rail faces towards the second rail and the first exterior side of the first rail faces away from the second rail; a carriage movably connected to the first rail and the second rail; a first bias member extending between the carriage and the frame, wherein the first bias member is near or distally spaced with respect to the first exterior side, wherein the first bias member is not positioned between the first rail and the second rail; and a second bias member extending between the carriage and the frame, wherein the second bias member is near or distally spaced with respect to the second exterior side, wherein the second bias member is not positioned between the first rail and the second rail, wherein the first bias member extends alongside the first exterior side, and wherein the second bias member extends alongside the second exterior side. ### Claim 2 (depends on 1) The exercise machine of claim 1, including at least one connector for connecting the first rail to the second rail. ### Claim 3 (depends on 2) The exercise machine of claim 2, wherein the at least one connector extends between the first interior side and the second interior side. ### Claim 4 (depends on 1) The exercise machine of claim 1, wherein the first bias member and the second bias member are each comprised of a resistance spring. ### Claim 5 (depends on 1) The exercise machine of claim 1, wherein the first bias member is positioned on an outer side of a first longitudinal axis extending through the first rail. ### Claim 6 (depends on 5) The exercise machine of claim 5, wherein the second bias member is positioned on an outer side of a second longitudinal axis extending through the second rail. ### Claim 7 (depends on 1) The exercise machine of claim 1, including a platform connected to the frame. ### Claim 8 (depends on 1) The exercise machine of claim 1, wherein the first rail and the second rail are connected together near the first end and the second end of the frame. ### Claim 9 (depends on 1) The exercise machine of claim 1, wherein said first bias member and said second bias member each have an upper surface, wherein said upper surface of said bias members is on or near a common plane with respect to said upper surface of said first rail between the lower and upper surface of the first rail. ### Claim 10 (depends on 1) The exercise machine of claim 1, including: a third bias member extending between the carriage and the frame, wherein the third bias member is near or distally spaced with respect to the first exterior side, wherein the third bias member is not positioned between the first rail and the second rail; and a fourth bias member extending between the carriage and the frame, wherein the fourth bias member is near or distally spaced with respect to the second exterior side, and wherein the fourth bias member is not positioned between the first rail and the second rail. ### Claim 11 An exercise machine, comprising: a frame having a first end, a second end and a rail extending between the first end and the second end of the frame, wherein the rail includes an upper portion, a lower portion, a first side, and a second side, wherein the rail is hollow with an internal channel within the rail; an upper slot extending through the upper portion of the rail to the internal channel; a carriage movably connected to the rail, wherein the carriage has a width greater than a width of the rail, wherein the carriage has an upper surface that has a width greater than the width of the rail, wherein the carriage is movable along a longitudinal axis that is parallel to a longitudinal axis of the rail; a first bias member extending between the frame and the carriage, wherein the first bias member extends within the internal channel; a platform attached to the frame; and a connector extending downwardly from the carriage through the upper slot into the internal channel, wherein the connector is adapted to selectively engage the first bias member. ### Claim 12 (depends on 11) The exercise machine of claim 11, wherein the internal channel includes at least one wheel track, wherein the carriage includes at least one wheel which engages with the at least one wheel track. ### Claim 13 (depends on 11) The exercise machine of claim 11, wherein the first bias member is comprised of a spring. ### Claim 14 (depends on 11) The exercise machine of claim 11, including a second bias member extending between the frame and the carriage, wherein the second bias member extends within the internal channel. ### Claim 15 (depends on 11) The exercise machine of claim 11, wherein the internal channel extends between the first end and the second end of the frame. ### Claim 16 An exercise machine, comprising: a frame having a first end, a second end and a rail extending between the first end and the second end of the frame, wherein the rail includes an upper portion, a lower portion, a first side, and a second side; wherein the rail includes an internal channel; an upper slot extending through the upper portion of the rail to the internal channel; a carriage movably connected to the rail, wherein the carriage has a width greater than a width of the rail, wherein the carriage has an upper surface that has a width greater than the width of the rail, wherein the carriage is movable along a longitudinal axis that is parallel to a longitudinal axis of the rail; a plurality of bias members extending between the frame and the carriage, wherein the plurality of bias members extend within the internal channel; a platform attached to the frame; and a connector extending downwardly from the carriage through the upper slot into the internal channel, wherein the connector is adapted to selectively engage the first bias member. ### Claim 17 (depends on 16) The exercise machine of claim 16, wherein the internal channel includes at least one wheel track, wherein the carriage includes at least one wheel which engages with the at least one wheel track. ### Claim 18 (depends on 16) The exercise machine of claim 16, wherein the plurality of bias members are parallel to one another. ### Claim 19 (depends on 16) The exercise machine of claim 16, wherein the plurality of bias members are comprised of springs. ### Claim 20 (depends on 16) The exercise machine of claim 16, wherein the internal channel extends between the first end and the second end of the frame.