# US 2019/0170203 A1 · Spring device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170203 A1 - Document ID: US20190170203A1 - Status: Published application - Kind: A1 - Application number: 15/731,154 - Filed: 2015-09-29 - Published: 2019-06-06 - Earliest claimed: 2014-09-29 - Assignees: Levitate Technologies, Inc. - Applicants: Levitate Technologies, Inc. - Inventors: Mark C. DOYLE - Web page: https://patentgrep.com/patent/US20190170203A1 ## CPC - F16F 1/125: {where the end coils of the spring engage an axial insert (F16F1/126, F16F1/128 take precedence)} - F16F 1/06: with turns lying in cylindrical surfaces - F16F 3/04: composed only of wound springs - F16F 2236/06: Tension - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract A spring assembly is provided that includes a spring including a plurality of coils wound helically between first and second ends of the spring; and a spring disc attached to the first end of the spring between a first end coil terminating the first end and a second end coil adjacent the first end coil. Methods for making such spring assemblies are also provided. ## Claims ### Claim 1 A spring assembly comprising: a spring including a plurality of coils wound helically between first and second ends of the spring; and a spring disc attached to the first end of the spring between a first end coil terminating the first end and a second end coil adjacent the first end coil. ### Claim 2 (depends on 1) The spring assembly of claim 1, wherein the spring disc further comprises a notch in a portion of the periphery of the disc that receives a transition region of the spring between the first end coil and the second end coil. ### Claim 3 (depends on 1) The spring assembly of claim 1, wherein the spring disc further comprises a rim extending around a portion of the first end coil to secure the spring disc relative to the first end of the spring. ### Claim 4 (depends on 1) The spring assembly of claim 1, wherein the spring disc comprises an attachment feature for coupling a connector element to the first end of the spring. ### Claim 5 (depends on 4) The spring assembly of claim 4, wherein the attachment feature comprises a hole through the center of the spring disc. ### Claim 6 (depends on 5) The spring assembly of claim 5, further comprising an elongate connector member comprising a first end received through the hole and an enlarged head for preventing removal of the connector member first end from the hole. ### Claim 7 (depends on 1) The spring assembly of claim 1, further comprising a second spring disc attached to the second end of the spring between a first end coil terminating the second end and a second end coil adjacent the first end coil. ### Claim 8 (depends on 1) The spring assembly of claim 1, wherein the spring comprises an extension spring. ### Claim 9 (depends on 1) The spring assembly of claim 1, wherein the spring disc comprises a surface that extends at least partially across the diameter of the first end of the spring, and a rim extending at least partially around a periphery of the surface. ### Claim 10 (depends on 9) The spring assembly of claim 9, wherein the surface has a helical or spiral shape. ### Claim 11 (depends on 1) The spring assembly of claim 1, further comprising a feature on an end tip of the first end coil that engages the spring disc to lock the spring disc relative to the spring. ### Claim 12 (depends on 1) The spring assembly of claim 1, further comprising a feature on an end tip of the first end coil that engages the spring disc to prevent movement of the spring disc relative to the spring. ### Claim 13 (depends on 11, 12) The spring assembly of claim 11 or 12, wherein the feature comprises a crimped tab formed in the end tip. ### Claim 14 (depends on 11, 12) The spring assembly of claim 11 or 12, wherein the feature comprises a fastener on the end tip. ### Claim 15 (depends on 11, 12) The spring assembly of claim 11 or 12, wherein the end tip is attached to the spring disc by one of bonding with adhesive, soldering, welding, or fusing. ### Claim 16 A spring assembly comprising: a spring including a plurality of coils wound helically between first and second ends of the spring, the first end terminating at a first end coil and including a second end coil adjacent the first end coil; a first spring disc comprising a helical or spiral surface secured between the first end coil and the second end coil, and a hole extending through the surface; and a first elongate member coupled to the first spring disc via the hole for coupling the spring assembly to a machine element. ### Claim 17 (depends on 16) The spring assembly of claim 16, wherein the second end terminates at a third end coil and includes a fourth end coil adjacent the third end coil, the spring apparatus further comprising: a second spring disc comprising a helical or spiral surface secured between the third end coil and the fourth end coil, and a hole extending through the surface; and a second elongate member coupled to the second spring disc via the hole for coupling the spring assembly to a machine element. ### Claim at position 18 18-20. (canceled) ### Claim 21 (depends on 1, 16) The spring assembly of claim 1 or 16, wherein the coils of the spring have variable pitch along its length. ### Claim 22 (depends on 21) The spring assembly of claim 21, wherein the first and second end coils on each end of the spring are spaced apart from one another in a relaxed state and the remaining coils abut one another. ### Claim 23 A method for making a spring assembly, comprising: providing a spring including a plurality of coils wound helically between first and second ends of the spring, a first end coil terminating the first end and a second end coil adjacent the first end coil; and attaching a spring disc to the first end of the spring between the first and second end coils. ### Claim at position 22 24-26. (canceled) ### Claim 27 A system for supporting an arm of a user, comprising: a harness configured to be worn on a body of a user; an arm support coupled to the harness configured to support an arm of the user, the arm support comprising an arm bracket including an arm rest on a first end thereof, and a second end pivotally coupled to the harness such that the arm bracket is pivotable about multiple axes to accommodate movement of the user's arm while following the movement without substantially interfering with the movement of the user's arm; and one or more compensation elements mounted on the arm bracket to at least partially offset a gravitational force acting on the user's arm as the user moves and the arm bracket follows the movement of the user's arm, wherein the one or more compensation elements comprise a spring assembly comprising: a spring including a plurality of coils wound helically between first and second ends of the spring; and a spring disc attached to the first end of the spring between a first end coil terminating the first end and a second end coil adjacent the first end coil.