HELMUT WIRSCHAL
Engineers in York, PA
License number
Pennsylvania PE020036E
Category
Engineers
Type
Professional Engineer
Address
Address
York, PA 17403
Professional information
Flap-Gate For Bottom Discharge Control In Canals Having Ice Problems
US Patent:
4357121, Nov 2, 1982
Filed:
Nov 3, 1980
Appl. No.:
6/203536
Inventors:
Helmut H. Wirschal - York PA
Assignee:
Allis-Chalmers Corporation - Milwaukee WI
International Classification:
E02B 742
US Classification:
405100
Abstract:
Rotating flow control flap-gate in a water canal provides a rotating motion to overcome ice friction without additional ice prevention provisions, to permit water flow in the canal below the ice cover.
Radial Gate Having Fine Tuning Of Flow Control
US Patent:
4394098, Jul 19, 1983
Filed:
Nov 3, 1980
Appl. No.:
6/203537
Inventors:
Helmut H. Wirschal - York PA
Warren G. Whippen - Dover PA
Warren G. Whippen - Dover PA
Assignee:
Allis-Chalmers Corporation - Milwaukee WI
International Classification:
E02B 908, F03B 1504
US Classification:
405 77
Abstract:
A radial or taintor gate utilized to control the flow of water to a turbine is provided with an independently movable flap-gate which is operable to control the release of small incremental amounts of water to flow to the turbine as required, such as speed synchronization; the large radial gate can be maintained closed until such time as synchronization of the turbine has been achieved.