Appeal No. 2000-1669 Page 6
Application No. 08/433,328
lines 60-67). A metered dose of a medicament-containing
aerosol is dispensed into the chamber (2) through the spout
(4) from a metered-dose aerosol container (6) (column 3, lines
15-19). Kraemer discloses tailoring the device for infants
and young children by providing the volume of the chamber to
be from 200-500 ml (column 2, lines 8-28). See also column 4,
lines 66-68 and column 5, lines 1-2.
Calvert discloses an inhaler for dispensing a medicament
from a capsule (column 1, lines 7-8) and teaches that
"delivery of the medicament depends not only upon the
medicament being removed from the capsule but also upon the
medicament actually reaching the respiratory tract of the user
during inhalation" (column 4, lines 53-56). Calvert provides
that
[i]n order to minimise the extent to which the
released powdered medicament can agglomerate on
the surface of the air passage through the
inhaler, the panels 2, 4 and the partition 8
which define the chamber portion 3 may be formed
of a polymer with a low surface resistivity,
thereby having anti-static properties.
Preferably the material defining the inside wall
of the chamber 3 is a polymer having a surface
resistivity less than 1012 Ohms or more
preferably less than 108 Ohms (column 5, lines
18-26).
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