Title: Exhaust system connector seal

Abstract: A method and apparatus for joining two tubular members in a strong, leak-proof fashion in which a band of ductile metal is passed around the adjacent ends of the members and circumferentially stressed beyond its elastic limit to conform intimately with the outer surfaces of the members throughout practically their entire circumstances. Several constructions for applying the circumferential forces are disclosed, and use is taught of a packing element to prevent paraxial or helical leakage.

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Inventors: Hiemstra, John R. (Rosemount, MN, US)
Wagner, Wayne M. (Apple Valley, MN, US)

Application Number: 524061
Filing Date: 1974-11-15
Publication_date: 1976-03-16
Assignee: Donaldson Company, Inc. (Minneapolis, MN)
Primary Class(es): 285/419 24/279, 29/505, 29/525.02, 29/525.05, 285/373
Other Classes:
US Patent Ref:

1146813	Jul, 1915	Peterman et al.	24/279.
1594258	Jul, 1926	Hansen	285/373.
2227551	Jan, 1941	Morris	285/373.
2314236	Mar, 1943	Mott	285/256.
2713352	Jul, 1955	Schustack	285/373.
2787051	Apr, 1957	Risley	285/373.
3087221	Apr, 1963	Armstrong	24/279.
3216079	Nov, 1965	Keyworth	29/452.
3411748	Nov, 1968	Fortune	285/419.
3708834	Jan, 1973	Anderson et al.	24/279.
3847419	Nov, 1974	Brown	285/382.

Other Refs: 68,929

Feb, 1930	SW

Primary Examiner: Callaghan, Thomas F.
Assistant Examiner:
Attorney: Merchant, Gould, Smith, Edell, Welter & Schmidt