David Michael Parks

US Patent:

51472325, Sep 15, 1992

Filed:

Aug 30, 1991

Appl. No.:

7/751930

Inventors:

Charles C. Miles - Longwood FL
Emery S. Sims - Orlando FL
David T. Parks - Clermont FL
Lee R. Witte - Altamonte Springs FL

Assignee:

Marine Muffler Corporation - Apopka FL

International Classification:

B63H 2110

US Classification:

440 89

Abstract:

A marine engine exhaust system and method utilizes first and second enclosed, generally tubular chambers having generally parallel lengthwise dimensions and internal intermediate exhaust passageways spaced along the lengthwise dimension of the second chamber for circulating the exhaust gases through the first chamber, laterally through the intermediate exhaust passageway into the second chamber, along the lengthwise dimension of the second chamber and thence out of an outlet exhaust passageway which passes through the second chamber wall. An outer portion of the second chamber is integrally formed with an outer portion of the first chamber to enhance structural integrity.

US Patent:

52597970, Nov 9, 1993

Filed:

Sep 11, 1992

Appl. No.:

7/943854

Inventors:

Charles C. Miles - Longwood FL
Emery S. Sims - Orlando FL
David T. Parks - Clermont FL
Lee R. Witte - Altamonte Springs FL

Assignee:

Marine Muffler Corporation - Apopka FL

International Classification:

B63H 2110

US Classification:

440 89

Abstract:

A marine engine exhaust system and method utilizes first and second enclosed, generally tubular chambers having generally parallel lengthwise dimensions and internal intermediate exhaust passageways spaced along the lengthwise dimension of the second chamber for circulating the exhaust gases through the first chamber, laterally through the intermediate exhaust passageway into the second chamber, along the lengthwise dimension of the second chamber and thence out of an outlet exhaust passageway which passes through the second chamber wall. An outer portion of the second chamber is integrally formed with an outer portion of the first chamber to enhance structural integrity.

US Patent:

20160273631, Sep 22, 2016

Filed:

May 31, 2016

Appl. No.:

15/169125

Inventors:

- Cleveland OH, US
Perry Robert Gibson - East Palestine OH, US
David Parks - Baden PA, US

International Classification:

F16H 25/14
H01H 71/10
F16C 3/02

Abstract:

Shaft assemblies include an elongate shaft having a plurality of closely spaced apart external notches with wall segments having a greater outer diameter than an outer diameter of the notches residing therebetween and at least one self-retaining locking ring that engages one of the notches to axially lock into position on the shaft and provide a pull out force that is between about 100 lbf to about 1000 lbf. The notches can have a width that is between about 0.010 inches to about 0.020 inches, on average, and a depth that is between about 0.001 inches to about 0.010 inches, on average

US Patent:

20140373671, Dec 25, 2014

Filed:

Jun 21, 2013

Appl. No.:

13/923653

Inventors:

- Cleveland OH, US
Perry Robert Gibson - East Palestine OH, US
David Parks - Baden PA, US

International Classification:

F16H 25/08

US Classification:

74568 R

Abstract:

Shaft assemblies include an elongate shaft having a plurality of closely spaced apart external notches with wall segments having a greater outer diameter than an outer diameter of the notches residing therebetween and at least one self-retaining locking ring that engages one of the notches to axially lock into position on the shaft and provide a pull out force that is between about 100 lbf to about 1000 lbf. The notches can have a width that is between about 0.010 inches to about 0.020 inches, on average, and a depth that is between about 0.001 inches to about 0.010 inches, on average