# US 2014/0150685 A1 · Piston-mediated motion dampening system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150685 A1 - Document ID: US20140150685A1 - Status: Published application - Kind: A1 - Application number: 14/094,469 - Filed: 2013-12-02 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Inventors: Stanley J. Checketts - Web page: https://patentgrep.com/patent/US20140150685A1 ## CPC - B61H 9/02: for aerial, e.g. rope, railways - F16F 9/0209: {Telescopic (F16F9/04 takes precedence)} - B61H: BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES (arrangements in rail vehicles for adjusting wheel-braking force to meet varying vehicular or permanent-way conditions B60T8/00; transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive, brake systems incorporating such transmitting means, e.g. air-pressure brake systems, B60T13/00; construction, arrangement or operation of valves incorporated in power brake systems B60T15/00; component parts, details or accessories of brake systems B60T17/00) - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract Described herein is a motion dampening system for dampening the motion of a moving object. The system includes a tension member with a first portion and a second portion, where the first portion is positionable to contact the moving object. The system also includes a tubular element that is configured to receive the second portion of the tension member. The tubular element contains a compressible substance. The system further includes a piston that is movable within the tubular element. The piston is coupled to the second portion of the tension member and sealingly divides the tubular element into first and second sections. Contact between the moving object and the first portion of the tension member moves the piston within the cylinder to compress the compressible substance in the first section and to create a vacuum in the second section. ## Claims ### Claim 1 A motion dampening system for dampening the motion of a moving object, comprising: a tension member comprising a first portion and a second portion, the first portion being positionable to contact the moving object; a tubular element configured to receive the second portion of the tension member, the tubular element containing a compressible substance; and a piston movable within the tubular element, the piston being coupled to the second portion of the tension member and sealingly dividing the tubular element into first and second sections, wherein contact between the moving object and the first portion of the tension member moves the piston within the tubular element to compress the compressible substance in the first section and to create a vacuum in the second section. ### Claim 2 (depends on 1) The motion dampening system of claim 1, further comprising a flow regulation device that is operable to control the flow of the compressible substance from the first section. ### Claim 3 (depends on 2) The motion dampening system of claim 2, wherein the flow regulation device is operable to allow a portion of the compressible substance to flow from the first section as the piston moves within the cylinder to compress the compressible substance in the first section. ### Claim 4 (depends on 1) The motion dampening system of claim 1, further comprising a flow regulation device that is operable to control the flow of the compressible substance into the second section. ### Claim 5 (depends on 4) The motion dampening system of claim 4, wherein the flow regulation device is operable to allow a compressible substance to flow into the second section as the piston moves within the cylinder to compress the compressible substance in the first section. ### Claim 6 (depends on 1) The motion dampening system of claim 1, further comprising a first flow regulation device that is operable to control the flow of the compressible substance from the first section and a second flow regulation device that is operable to control the flow of the compressible substance into the second section, wherein the first and second flow regulation devices are cooperatively operable to allow a portion of the compressible substance to flow from the first section and allow a compressible substance to flow into the second section as the piston moves within the cylinder to compress the compressible substance in the first section. ### Claim 7 (depends on 1) The motion dampening system of claim 1, wherein the tubular element is elongate in a first direction, the first portion of the tension member extends perpendicularly relative to the first direction, and the second portion of the tension member extends parallel to the first direction. ### Claim 8 (depends on 1) The motion dampening system of claim 1, further comprising a pulley coupled to the tubular element, the pulley being engaged with the first portion of the tension member, and wherein the pulley is swivelable relative to the tubular element to allow the first portion of the tension member to pivot about the pulley. ### Claim 9 (depends on 1) The motion dampening system of claim 1, wherein the piston comprises a first disk, a second disk, and a spacer extending between the first and second disks, and wherein the first and second disks move along and form a seal against an interior surface of the tubular element. ### Claim 10 (depends on 1) The motion dampening system of claim 1, wherein the piston comprises a flow regulation device that is operable to control the flow from the first section to the second section as the piston moves within the cylinder to compress the compressible substance in the first section. ### Claim 11 (depends on 1) The motion dampening system of claim 1, wherein the moving object is a carriage of an amusement ride that slides along a zip line extending perpendicularly relative to the first portion of the tension member. ### Claim 12 (depends on 11) The motion dampening system of claim 11, further comprising a stop bracket coupled to the first portion of the tension member and slideably coupled to the zip line, wherein the stop bracket is configured to receive the carriage of the amusement ride. ### Claim 13 An amusement ride, comprising: a zip line; a passenger carriage slideably coupled to the zip line; first and second tubular elements spaced apart from each other, the zip line extending between the first and second tubular elements, wherein each of the first and second tubular elements defines an enclosed internal channel; first and second pistons positioned within and movable along the internal channels of the first and second tubular elements, respectively; a tension member extending between the first and second tubular elements, wherein the tension member is coupled to the first and second pistons; and a stop bracket coupled to the tension member between the first and second tubular elements, and slideably coupled to the zip line, the stop bracket being configured to engage the passenger carriage of the amusement ride, wherein engagement between the stop bracket and the passenger carriage moves the first and second pistons along the internal channels of the first and second tubular elements, respectively. ### Claim 14 (depends on 13) The amusement ride of claim 13, wherein the internal channel contains a compressible substance, and wherein the first piston sealingly divides the internal channel of the first tubular element into first and second sections, and the second piston sealingly divides the internal channel of the second tubular element into first and second sections. ### Claim 15 (depends on 14) The amusement ride of claim 14, wherein movement of the first and second pistons along the internal channels of the first and second tubular elements compresses the compressible substance in the first sections of the internal channels to dampen motion of the passenger carriage. ### Claim 16 (depends on 14) The amusement ride of claim 14, wherein movement of the first and second pistons along the internal channels of the first and second tubular elements creates a vacuum in the first sections of the internal channels to dampen motion of the passenger carriage. ### Claim 17 (depends on 13) The amusement ride of claim 13, wherein the tension member extends perpendicularly relative to the tubular elements and the zip line. ### Claim 18 (depends on 13) The amusement ride of claim 13, wherein the first and second tubular elements extend parallel to each other in a substantially vertical orientation. ### Claim 19 (depends on 13) The amusement ride of claim 13, wherein the internal channel contains a compressible substance, and wherein each of the first and second tubular elements comprises a pressure release valve configured to release compressible substance from or receive compressible substance into the internal channels of the first and second tubular elements, respectively, as the first and second pistons move along the internal channels of the first and second tubular elements. ### Claim 20 A method for dampening motion of a passenger carriage along a zip line, the method comprising: positioning a tension member in a path of a moving passenger carriage; engaging the moving passenger carriage with the tension member; pulling a piston within an enclosed tubular element and coupled to the tension member in response to the moving passenger carriage engaging the tension member; and compressing a compressible substance within the enclosed tubular element as the piston is pulled within the enclosed tubular element, wherein compression of the compressible substance dampens motion of the piston and the moving passenger carriage.