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Primary Examiner: Foss, J. Franklin
Assistant Examiner:
Attorney: Krisher, Jr.; Ralph E.

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Title: Torsional vibration isolating motor mounting system, mounting arrangement, assemblies including the same

Abstract: Motor vibration isolating arrangements and systems using such arrangements are disclosed. In preferred arrangements, leaf spring mounting arms have low torsional spring constants and yet strength to withstand shipping and handling loads. The mounting member spring constants for axial, radial and tilting vibration modes are selected in specific forms so that the characteristic vibration transmissibility ratios for these modes are each close to unity, but so that torsional mode vibration transmissibility is substantially less than unity. In particularly preferred arrangements, sheet steel having a martensitic grain structure is utilized. In some forms, the motor shell constitutes one weldable member and a holding plate is weldable. The spring material is protected by heat sinking from being softening and weakened by conventional welding processes. The heat sinking members also contribute to a very strong fastening scheme.

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Inventors: Litch, III, Ernest W. (Ft. Wayne, IN, US)

Application Number: 829666
Filing Date: 1977-09-01
Publication_date: 1980-04-29
Assignee: General Electric Company (Ft. Wayne, IN)
Primary Class(es): 248/604 417/363, 417/423.15
Other Classes:
US Patent Ref:

1764761	Jun, 1930	Spreen	248/26.
1781155	Nov, 1930	Anderson	248/26.
1824202	Sep, 1931	Finch	248/26.
1873343	Aug, 1932	Seyfried	248/26.
2081030	May, 1937	Anderson	248/26.
2096621	Oct, 1937	Skolfield	248/15.
2451970	Oct, 1948	Odor	417/423.
2615620	Oct, 1952	Goettl	248/15.
2936947	May, 1960	Staak	417/353.
3067488	Dec, 1962	Bennett et al.	219/93.
3127092	Mar, 1964	Shenberger	248/15.
3353078	Nov, 1967	Maynard	318/227.
3584469	Jun, 1971	Butts	310/91.
3773285	Nov, 1973	Morrill	248/15.
3774009	Nov, 1973	Hodges	219/93.
3775029	Nov, 1973	Ranz	417/423.
3803690	Apr, 1974	Cann et al.	29/156.
3830595	Aug, 1974	Capenter et al.	248/15.

Other Refs: Other References: "Test Procedures of National Safe Transit Committee" published by Porcelain Enamel Institute in 1957.
"Inland Martinsite Steel" published by Harris Steel Co.
"High Carbon Steel Strip" published by National-Standard Company, 1969.