US2011194952A1PendingUtilityA1

Effort reducing start mechanism for hydraulically propelled vehicles

Individually held — no corporate assignee on recordPriority: Dec 19, 2007Filed: Dec 15, 2008Published: Aug 11, 2011

Est. expiryDec 19, 2027(~1.4 yrs left)· nominal 20-yr term from priority

Inventors:Mark M. Kiviahde James C. Schroeder Mariusz J. Luczak David M. Larsen

F16D 31/00B60K 17/10F16D 43/00

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References

Claims

Abstract

A propulsion unit 10 , used to propel a line striper, is provided with a gasoline engine 12 which may have either a pull/recoil or an electrical starter. Engine 12 is connected via a centrifugal clutch 14 of a known type to a hydraulic pump 16 which includes a hydrostatic drive unit 18 . In the preferred embodiment, the clutch 14 is designed to engage between the cranking speed and the idle speed.

Claims

exact text as granted — not AI-modified

1 . In a propulsion unit having a gas engine, a hydraulic pump driven by said gas engine and a hydrostatic drive, the improvement comprising a centrifugal clutch being driven by said engine and driving said hydraulic pump. 
     
     
         2 . The propulsion unit of  claim 1  wherein said engine has an idle speed and centrifugal clutch engages above said idle speed. 
     
     
         3 . The propulsion unit of  claim 1  wherein said engine has an idle speed and a cranking speed and centrifugal clutch engages between said idle speed and said cranking speed.

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