Number | Name | Date | Kind |
---|---|---|---|
3056706 | Knoppel | Oct 1962 | |
3142598 | Rosen | Jul 1964 | |
3968958 | Huchette et al. | Jul 1976 |
Entry |
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Aires, Design of Machine Elements, 3rd ed., pp. 189-195, The MacMillan Co., New York, 1955. |
Warner et al., Glass/Epoxy Spring is 80% Lighter Than Steel, Plastic Design Forum, Jul./Aug., 1980, p. 14. |
Trebilcock et al., FRP Halves Spring Weight, Improves Ride, Automotive Engneering, May 1981, pp. 31-36. |