Systems and methods for miniaturized drawbar extension springs
| DWPI Title: Systems for operating miniaturized drawbar extension spring, has first end cap encircling first and second drawbar elements, where first end cap and second end cap are positioned at respective first and second ends of spring coil |
| Abstract: Extension springs that can be manufactured to a small size with a precise free length are described herein. An extension spring comprises a first drawbar member and a second drawbar member that extend along a same direction. The extension spring further comprises a compression spring coil that surrounds respective portions of the draw bar members. At either end of the spring coil are positioned end caps that surround the drawbar members. The end caps provide flat surfaces on which the ends of the spring coil rest in a resting position of the extension spring. The end caps are held against bent ends of arms of the drawbar members by tension of the spring coil. When the drawbar members are drawn apart from one another, the end caps compress the spring coil. Compression of the spring coil causes forces that resist the motion of the drawbar members apart from one another. |
| Use: Systems for operating a miniaturized drawbar extension spring. |
| Advantage: The system realizes damp transverse deflections of the spring coil so as to improve reliability of a spring, thus reducing shock or vibration. The system maintains precise free length of the spring 100 by providing flat surfaces on which the ends of the spring coil to maintain distance between the ends the spring coil in an easy manner. |
| Novelty: The system has a first drawbar element (102) extending along same axial direction as a second drawbar element (104). A third drawbar (106) element is extended along same axial direction as the second drawbar element, where the third drawbar element is positioned such that the first drawbar element is arranged between the second drawbar element and the third drawbar element. A spring coil (108) surrounds a portion of the first drawbar element and a portion of the second drawbar element. A first end cap (110) encircles the first and second drawbar elements. A second end cap (112) encircles the first and second drawbar elements, where the first end cap and the second end cap are positioned at respective first and second ends of the spring coil. |
| Filed: 3/19/2018 |
| Application Number: US15924572A |
| Tech ID: SD 14526.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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