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Randall Sierk Phones & Addresses

  • Christiana, PA
  • New Holland, PA
  • Paradise, PA
  • Lancaster, PA
  • Glen Burnie, MD
  • Fayetteville, PA
  • 121 Germantown Ave, Christiana, PA 17509 (717) 808-3295

Work

Position: Professional/Technical

Education

Degree: Associate degree or higher

Publications

Us Patents

Forward Clutch Drive For Windrow Header With Positive Reverse Drive

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US Patent:
6651412, Nov 25, 2003
Filed:
Oct 29, 2002
Appl. No.:
10/282551
Inventors:
Randall L. Sierk - Christiana PA
Wayne D. Thaxton - Denver PA
Assignee:
New Holland North America, Inc. - New Holland PA
International Classification:
A01D 6908
US Classification:
56 103, 56 112
Abstract:
A drive system for the auger of a crop-harvesting header that includes a slip clutch to slow or stop auger rotation upon encountering a slug or foreign object of sufficient size, and pawls on the drive sprocket that engage a ratchet wheel on the auger drive shaft when the drive is reversed to provide positive power to the auger in reverse to eject the obstruction.

Speed Shifter Linkage For Skid-Steer Loader

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US Patent:
45707308, Feb 18, 1986
Filed:
Sep 5, 1984
Appl. No.:
6/647946
Inventors:
Charles M. Kline - Reinholds PA
Randall L. Sierk - New Holland PA
Assignee:
Sperry Corporation - New Holland PA
International Classification:
B62D 1100
US Classification:
180 648
Abstract:
A skid-steer loader having transversely spaced wheel assemblies driven by individually operable drive mechanisms having spaced apart independently mounted hydrostatic motors is disclosed wherein a speed shifter linkage interconnects the hydrostatic motor cam shafts to affect a simultaneous shifting of both motors from one speed to another. A floatingly mounted cross shaft is threadably engaged with trunnions pivotally mounted in pintle arms fastened to the hydraulic motor cam plate shafts. Rotation of the cross shaft is affected through manipulation of a control lever engageable with adjustable stops to permit a quick and convenient adjustment of high and low speed operating positions. A frictional clamping of the linkage between the control lever and a sprocket for rotating the cross shaft provides an easy initial positioning of the control lever and permits a still greater range of adjustment of the nominal operating positions for maximum operator comfort.

Diesel Engine Control Linkage

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US Patent:
44547838, Jun 19, 1984
Filed:
Apr 19, 1982
Appl. No.:
6/369692
Inventors:
Randall L. Sierk - New Holland PA
Lonny R. Freitag - Lancaster PA
Assignee:
Sperry Corporation - New Holland PA
International Classification:
G05G 908
US Classification:
74471R
Abstract:
A control linkage for a diesel engine in a skid-steer loader is disclosed wherein the control rods for both the fuel shut-off valve and the rate of flow control valve are operably interconnected by a bracket slidably receiving the control rods. The bracket is actuatable by a single control lever in the operator's compartment to vary the rate of flow of fuel to the engine without manipulating the fuel shut-off valve and to terminate the flow of fuel by manipulating the shut-off valve after the rate of fuel flow has been reduced to a predetermined point.
Randall L Sierk from Christiana, PA, age ~80 Get Report