Appeal 2006-3201
Application 10/689,951
Claims 1 and 6-11
The appellants argue claims 1 and 6-11 as a group (brief,
pages 7-9). We therefore limit our discussion to one claim in
that group, i.e., claim 1. See 37 CFR § 41.37(c)(1)
(vii)(2004).
Sillat discloses a method for protecting against overflow
of a container being filled with a cryogenic medium (page 1).
The cryogenic medium is fed to the container through line 6,
and gaseous medium displaced from the container exits through
line 10 that contains, as a sensor, vapor pressure contact
manometer 12 (page 4). Pneumatic energy D is fed to control
unit K, and the outputs of the control unit are pneumatic
line B and line C that can be either a pneumatic line or an
electric line (page 4). Line C goes to pneumatic or electric
contact manometer P3 in line 13 which is between manometer 12
and a valve (14) (page 4). Both line 13 and manometer 12 are
filled with neon (page 4). When the container is overfilled,
liquid entering line 10 causes a temperature drop in the sensor
of manometer 12 that results in condensation of the sensor
medium in that manometer (page 4). The condensation causes a
pressure drop in line 13 that is measured by manometer P3
(page 4). Manometer P3 then signals control unit K to stop the
inlet flow of cryogenic medium (page 4).
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