David W Andrews

US Patent:

8022394, Sep 20, 2011

Filed:

Dec 18, 2008

Appl. No.:

12/338648

Inventors:

Gemma Solomon - Chicago IL, US
David Andrews - Alexandria VA, US
Mark Ratner - Glencoe IL, US

Assignee:

Northwestern University - Evanston IL

International Classification:

H01L 31/00
H01L 29/06

US Classification:

257 25, 257 9, 257E51023

Abstract:

A molecular quantum interference device for use in molecular electronics. In one embodiment, the device includes a molecular quantum interference unit having a first terminal group and a second terminal group between which quantum interference affects electrical conduction, a molecular spacer having a first terminal group and a second terminal group and coupled to the molecular quantum interference unit through a chemical bonding between the first terminal group of the molecular spacer and the second terminal group of the molecular quantum interference unit, a first electrode electrically coupled to the molecular quantum interference unit and configured to supply charge carriers to or receive charge carriers from the molecular quantum interference unit, and a second electrode electrically coupled to the molecular spacer and configured to receive charge carriers from or supply charge carriers to the molecular spacer.

US Patent:

8381709, Feb 26, 2013

Filed:

Mar 1, 2011

Appl. No.:

13/037443

Inventors:

William R. Woessner - Chicago IL, US
David B. Andrews - Carson City NV, US
Timothy D. Greene - Reno NV, US
Jose L. Lopez - Reno NV, US

Assignee:

Wilson Sporting Goods Co. - Chicago IL

International Classification:

F41B 3/04

US Classification:

124 7, 124 16, 124 36, 473422, 473451, 473459, 473415

Abstract:

A pitching machine for pitching a ball to a batter positioned in a first batting location. The pitching machine including a frame, a drive assembly coupled to the frame, a pitching arm and a lead timing arm. The pitching arm is coupled to drive assembly and rotatable in a first direction about a first axis. The pitching arm includes a forward side configured to contact and project the ball during a portion of the rotation of the pitching arm about the first axis. The pitching arm is configured to project the ball at least a first ball release position with respect to the first axis. The lead timing arm includes a marker. The lead timing arm is coupled to the pitching arm such that the marker is visible to the batter positioned in the first batting location prior to the pitching arm reaching the first ball release position.

US Patent:

20110214652, Sep 8, 2011

Filed:

Mar 1, 2011

Appl. No.:

13/037454

Inventors:

WILLIAM R. WOESSNER - CHICAGO IL, US
DAVID B. ANDREWS - CARSON CITY NV, US
TIMOTHY D. GREENE - RENO NV, US
JOSE L. LOPEZ - RENO NV, US

Assignee:

WILSON SPORTING GOODS CO. - CHICAGO IL

International Classification:

A63B 69/40

US Classification:

124 6

Abstract:

A pitching machine including a frame, a ball feed trough coupled to the frame, a ball acquisition structure coupled to the frame, and a ball cup coupled to the frame. The trough is configured to retain at least three of the balls. The cup is positioned at the lower end of the trough and is adjacent the acquisition structure. The trough is sloped to allow for gravity feed of the balls to the cup. The cup has a curved wall defusing a ball opening sized for receiving and dispensing the one of the balls. The cup is rotatable about a ball cup axis such that, during use, the cup receives one of the balls when the ball opening of the cup rotates to meet the lowest ball in the trough and the curved wall inhibits more than one ball from entering the cup, and as the cup continues to rotate.