JONATHAN DAVID DOUGLAS
Pilots at Big Orange Dr, Russellville, TN
License number
Tennessee A5006645
Issued Date
Aug 2016
Expiration Date
Aug 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
3767 Big Orange Dr, Russellville, TN 37860
Professional information
Piston Having A Patterned Coating And Method Of Applying Same
US Patent:
7171936, Feb 6, 2007
Filed:
Oct 23, 2003
Appl. No.:
10/691954
Inventors:
Wolfgang Rein - Milford MI, US
David Roth - West Bloomfield MI, US
Jonathan Douglas - Russellville TN, US
David Roth - West Bloomfield MI, US
Jonathan Douglas - Russellville TN, US
Assignee:
Mahle Technology, Inc. - Farmington Hills MI
International Classification:
F02F 3/00, F02F 3/10
US Classification:
1231934, 29888048
Abstract:
The present invention relates to a piston adapted for reciprocal movement within the cylinders of an internal combustion engine. The piston includes a body having a crown formed at the uppermost margins of the body and a skirt, depending from the crown, adapted for relative sliding motion with respect to the cylinder. The piston further includes a coating bonded to the piston skirt so as to be juxtaposed between the skirt and the cylinder. The coating has a plurality of recesses formed thereon so as to define a predetermined pattern of recesses on the surface of the skirt that retains lubricant between the skirt and the cylinder wall. The coating may also direct lubricant along the outer circumference of the piston skirt during reciprocal movement of the piston within a cylinder. A method of applying the coating to the piston skirt is also disclosed.
Phosphatized And Bushingless Piston And Connecting Rod Assembly Having An Internal Gallery And Profiled Piston Pin
US Patent:
2004026, Dec 30, 2004
Filed:
Nov 20, 2003
Appl. No.:
10/718438
Inventors:
Wolfgang Rein - Milford MI, US
Jonathan Douglas - Russellville TN, US
Jonathan Douglas - Russellville TN, US
International Classification:
F02B075/32
US Classification:
123/197400
Abstract:
The present invention relates to a connecting rod and piston pin assembly for an internal combustion engine to improve wear of the piston/connecting rod pivot point and reduce deformation of the pin bore. To this end, the assembly includes a piston having a pin bore, a connecting rod having a bore adapted to be aligned with the piston pin bore and piston pin interconnecting the piston and the connecting rod through engaging their respective bores. The connecting rod includes an internal gallery between the bore and a terminal end. The piston pin has a profiled outer circumference that is substantially circular in cross-section with a larger diameter at the distal ends than at the center portion. Either the pin or one end of the connecting rod includes a phosphatized coating having a thickness between two and eight microns to facilitate movement between the connecting rod bore and the profiled piston pin.
Piston For An Internal Combustion Engine
US Patent:
7377206, May 27, 2008
Filed:
Dec 28, 2005
Appl. No.:
11/320080
Inventors:
Jonathan Douglas - Russellville TN, US
Assignee:
MAHLE Technology, Inc. - Farmington Hills MI
MAHLE International GmbH - Stuttgart
MAHLE International GmbH - Stuttgart
International Classification:
F16J 1/04
US Classification:
92223
Abstract:
A piston for an internal combustion engine, which performs a sliding reciprocating motion in a cylinder, and a method for producing the piston. The piston has a piston head and a piston skirt having at least one bearing surface. The at least one bearing surface is provided at least in part with a first overlay, and a second overlay is applied at least to parts of the first overlay. The first overlay exhibits greater wear resistance than the second overlay.