MIKHAIL A SIROTA
Real Estate Appraisers in Newton, MA
License number
Massachusetts 101311
Issued Date
Jul 24, 2003
Expiration Date
Dec 18, 2009
Type
Real Estate Appraiser Trainee
Address
Address
Newton, MA 02462
Professional information
Oar With Pivotal Blades
US Patent:
7922549, Apr 12, 2011
Filed:
Feb 4, 2009
Appl. No.:
12/322526
Inventors:
Anatoliy Sirota - Chestnut Hill MA, US
Mikhail Sirota - Newton MA, US
Aleksey Sirota - Wayland MA, US
Artem Sirota - Chestnut Hill MA, US
Mikhail Sirota - Newton MA, US
Aleksey Sirota - Wayland MA, US
Artem Sirota - Chestnut Hill MA, US
International Classification:
B63H 1/32
US Classification:
440 20
Abstract:
An oar or paddle for moving forward and backward any kind of vessel through the water comprising two parallel lattices fixed at a given distance from each other and a frame moving between lattices. The frame has a multitude of parallel grooves of circular cross-section which pivotally support a multitude of plates. The plates are located axially of the grooves by the portion of the plates disposed within the groove. The grooves have a peripheral extent which permits the plates to rotate. The frame is connected with vessel's mode of movement backward or forward controller. Lattices are connected with vessel's engine.