Pumps – Including means to prevent foreign material settling from...
Patent
1981-11-18
1984-05-01
Croyle, Carlton R.
Pumps
Including means to prevent foreign material settling from...
417551, 92128, 92171, F04B 2100
Patent
active
044458231
ABSTRACT:
A hollow piston pump (10) for pumping animal waste material including paddles (55, 155, 255) to agitate waste material collected in a hopper (11) and aid in its transfer into the hollow piston (17), a pumping chamber (14) including a cylindrical tube (76), and/or a cylindrical hollow piston (17) having antifriction bearings (90) and a seal (91) between its outer surface and the cylindrical tube (76) of the pumping chamber (14).
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"Powerful, Hydraulically Operated Pump Provides Almost Unlimited Volume!", illustrating pump sold by Hedlund Mfg. Co., Inc.
"Nesseth Hollow Piston", page illustrating pump sold by Nesseth Inc.
"Badger Transfer Pumps", published by Badger Northland Inc.
Acorn Equipment Corp.
Croyle Carlton R.
Neils Paul F.
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