Appeal No. 1999-0046
Application No. 08/442,103
Appellants’ invention pertains to a heat exchanger, and
in particular to a heat exchanger having distribution canals
of equal length and similar cross-section and heat exchanger
tubes of equal length and similar cross-section to ensure even
distribution and flow of the medium to be heated. Claim 34,
the sole independent claim on appeal, is illustrative of the
claimed subject matter. A copy thereof can be found in an
appendix to appellants’ main brief.
The references relied upon by the examiner in support of
the rejections are:1
Jenkins 2,181,486 Nov. 28, 1939
Singh 3,513,908 May 26, 1970
Plaschkes 4,924,938 May 15,
1990
Cox et al. (Cox) 4,999,102 Mar. 12, 1991
Hagemeister 5,058,663 Oct. 22, 1991
Meijburg 5,246,062 Sep. 21, 1993
Trage et al. (Trage) 5,301,746 Apr. 12, 1994
Thunes(Norway) 28,388 Nov. 05, 1917
Austrian Patent (AP) 211,796 Nov. 10, 1960
1Our understanding of the Norwegian and Austrian patents
cited by the examiner against the claims is derived from
translations thereof prepared in the PTO, copies of which are
enclosed with this opinion for appellants’ convenience.
2
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