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Title: Systems and methods for miniaturized drawbar extension springs

Patent ·
OSTI ID:1600269

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.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
NA0003525
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
Patent Number(s):
10,473,175
Application Number:
15/924,572
OSTI ID:
1600269
Resource Relation:
Patent File Date: 03/19/2018
Country of Publication:
United States
Language:
English

References (15)

Compression Spring for Press Recoil Mechanisms patent May 1950
Tongue-Support patent February 1883
Spring-Starter for Vehicles patent December 1888
Combined Spring-Shackle and Oil-Ejector patent November 1897
Damping spring for use in agricultural implements patent January 2008
Spring Device patent July 1941
Spring-actuated swing device patent April 1997
Sail-type windmill wheel patent June 2002
Draft-Spring patent January 1885
Compressible Spring patent February 1924
Snubber Hook and Quick-Fastener Link patent June 1927
Bi-directional dampening device and method therefor patent February 2002
Shock mitigating tether system patent January 1996
Safety Tether for Pipe End Prep Tool patent-application November 2012
Tension Device for Hitching-Straps patent August 1916

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