Appeal 2007-4073
Application 10/739,417
1 15 Alignment handle blanks
2 30 Seal adapter
3 31 Piston cup
4 39 Seal spout
5 50 Holder
6
7 10) Leaphart’s seal adapter is preferably attached to the lower barrel by
8 glue or suitable adhesive and secures the piston cup. (Leaphart ‘753, col. 7,
9 ll. 42-47).
10
11 11) Leaphart’s piston cup is preferably a flexible member that slidably
12 engages with the interior wall of the upper barrel to form a seal. (Id. at col.
13 7, ll. 51-57).
14
15 12) Leaphart’s piston cup is preferably manufactured from a pliable
16 material, with rubber being most preferred. (Id. at col. 7, ll. 57-59).
17
18 2. Ruo, U.S. Pat. 4,186,451
19 13) Ruo describes a plastic sanitary pump for releasing the blockage in the
20 drain of a toilet. (Ruo, Abstract).
21
22 14) Ruo Figure 3 provides a perspective on the parts of Ruo’s pump and is
23 depicted below:
24
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Last modified: September 9, 2013