Patents by Inventor Paul D. Levering
Paul D. Levering has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20120199426Abstract: One embodiment of a brake drum includes a cylindrical main body portion, a brake drum mounting flange portion, a brake drum transition portion, the brake drum transition portion extending between the cylindrical main body portion and the mounting flange portion, the transition portion having a plurality of vent openings, and one air scoop secured at each of the vent openings, whereby rotation of the brake drum and air scoop induces air movement within a brake drum cavity defined by the main body portion. Each air scoop defines a louver opening which faces the angular direction of drum rotation, an air channel in fluid communication with the louver opening and the brake drum cavity, and a deflection surface located in the air channel. The deflection surface is positioned to re-direct air movement entering the louver opening at an angular direction, to a generally radial and inboard direction.Type: ApplicationFiled: April 19, 2012Publication date: August 9, 2012Applicant: WEBB WHEEL PRODUCTS INC.Inventors: Paul D. LEVERING, Byron E. CORNETT, Timothy M. YANT, John C. HALL, Jeremy L. ZILLS
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Patent number: 8181753Abstract: One embodiment of a brake drum includes a cylindrical main body portion, a brake drum mounting flange portion, a brake drum transition portion, the brake drum transition portion extending between the cylindrical main body portion and the mounting flange portion, the transition portion having a plurality of vent openings, and one air scoop secured at each of the vent openings, whereby rotation of the brake drum and air scoop induces air movement within a brake drum cavity defined by the main body portion. Each air scoop defines a louver opening which faces the angular direction of drum rotation, an air channel in fluid communication with the louver opening and the brake drum cavity, and a deflection surface located in the air channel. The deflection surface is positioned to re-direct air movement entering the louver opening at an angular direction, to a generally radial and inboard direction.Type: GrantFiled: December 26, 2006Date of Patent: May 22, 2012Assignee: Webb Wheel Products Inc.Inventors: Paul D. Levering, Byron E. Cornett, Timothy M. Yant, John C. Hall, Jeremy L. Zills
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Publication number: 20090065313Abstract: A novel composite brake drum with a shell and a drum liner that includes one or more mid-positioned squealer bands that are roughly in line with the ribs of the brake shoes. This places the most rigid part of the brake drum and the location of greatest heat sink over the most rigid portion of the brake shoes, which is also the position of greatest heat input. The axial cooling fins radiating from the squealer band aid in dissipating the heat from friction generated during the braking cycle.Type: ApplicationFiled: September 6, 2007Publication date: March 12, 2009Applicant: Webb Wheel Products, Inc.Inventor: Paul D. Levering
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Publication number: 20090014263Abstract: One embodiment of a brake drum includes a cylindrical main body portion, a brake drum mounting flange portion, a brake drum transition portion, the brake drum transition portion extending between the cylindrical main body portion and the mounting flange portion, the transition portion having a plurality of vent openings, and one air scoop secured at each of the vent openings, whereby rotation of the brake drum and air scoop induces air movement within a brake drum cavity defined by the main body portion. Each air scoop defines a louver opening which faces the angular direction of drum rotation, an air channel in fluid communication with the louver opening and the brake drum cavity, and a deflection surface located in the air channel.Type: ApplicationFiled: December 26, 2006Publication date: January 15, 2009Applicant: WEBB WHEEL PRODUCTS INC.Inventors: Paul D. Levering, Byron E. Cornett, Timothy M. Yant, John C. Hall, Jeremy L. Zills
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Publication number: 20080210504Abstract: A vehicle composite brake drum (10) is provided and includes a brake drum shell (12), and a brake drum liner (22), the brake drum liner (22) is formed of compacted graphite iron. A method of manufacturing the vehicle composite brake drum includes forming a brake drum shell and then forming a brake drum liner of compacted graphite iron.Type: ApplicationFiled: August 3, 2006Publication date: September 4, 2008Applicant: Webb Wheel Products, Inc.Inventors: Paul D. Levering, Jeremy L. Zills, John C. Hall
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Publication number: 20040134571Abstract: A compacted graphite iron brake component for use in a braking system having a final composition of: 3.0 to about 4.0 percent carbon; 2.15 to about 2.60 percent silicon; 0.40 to about 0.90 manganese; and the balance iron. The brake component having a frictionally engageable portion with a microstructure of compacted graphite disposed in a pearlitic matrix.Type: ApplicationFiled: March 31, 2003Publication date: July 15, 2004Inventors: William L. Powell, Paul D. Levering
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Patent number: 6572712Abstract: A compacted graphite iron brake component for use in a braking system having a final composition of: 3.0 to about 4.0 percent carbon; 2.15 to about 2.60 percent silicon; 0.40 to about 0.90 manganese; and the balance iron. The brake component having a frictionally engageable portion with a microstructure of compacted graphite disposed in a pearlitic matrix.Type: GrantFiled: December 14, 2000Date of Patent: June 3, 2003Assignees: Waupaca Foundry, Inc., Webb Wheel Products, Inc.Inventors: William L. Powell, Paul D. Levering
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Publication number: 20020108823Abstract: A compacted graphite iron brake component for use in a braking system having a final composition of: 3.0 to about 4.0 percent carbon; 2.15 to about 2.60 percent silicon; 0.40 to about 0.90 manganese; and the balance iron. The brake component having a frictionally engageable portion with a microstructure of compacted graphite disposed in a pearlitic matrix.Type: ApplicationFiled: December 14, 2000Publication date: August 15, 2002Inventors: William L. Powell, Paul D. Levering
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Patent number: 5538113Abstract: A cylindrical brake drum including a flanged end and an open end having a squealer band in the shape of an annular ring and a multiplicity of chill fins irregularly spaced one to another and/or relative to a plurality of equally spaced airflow channels where the chill fins are cast into the squealer band and the outside surface of the brake drum where the chill fins are generally of a constant height with respect to the outside surface and then moving axially outward decrease in height to meet the outside surface and cause any casting porosities to move to a central region of the squealer band thereby reducing drum cracking due to localized hot spots thereby greatly improving the brake drum fatigue strength while minimizing the increase in overall weight and facilitating ease of manufacture.Type: GrantFiled: August 31, 1995Date of Patent: July 23, 1996Assignee: Eaton CorporationInventors: Jay D. White, Paul D. Levering
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Patent number: 3942845Abstract: An anti-skid system for a tandem axle vehicle including an improved vehicle suspension for opposing a selected portion of the braking torque which tends to unload the front axle during breaking to eliminate brake hop. The suspension cooperates with an anti-skid circuit to increase braking efficiency. In one embodiment, the anti-skid circuit senses a skid condition at the rear wheels on a per side basis and controls the braking of the wheels on that side in response thereto. In an alternate embodiment, the anti-skid circuit senses a skid condition at either the front or rear wheels on a per side basis and controls the braking of the wheels on that side in response thereto.Type: GrantFiled: March 17, 1975Date of Patent: March 9, 1976Assignee: Dana CorporationInventor: Paul D. Levering