LUYU YANG
Engineering in Tyngsborough, MA
License number
Massachusetts 46696
Issued Date
Jul 17, 2006
Expiration Date
Jun 30, 2010
Type
Chemical Engineer
Address
Address
Tyngsborough, MA 01879
Professional information
Spin Improvement String Tool
US Patent:
8631834, Jan 21, 2014
Filed:
Jan 21, 2012
Appl. No.:
13/355512
Inventors:
Luyu Yang - Tyngsborough MA, US
International Classification:
B21F 9/00, B25B 7/02
US Classification:
140123, 1401235, 81418
Abstract:
The spin improvement string pliers is a pivotally secured together plier device used to manually restructure and roughen the surface of a synthetic or a polyester string on a strung tennis racquet by means of plastic deformation. The line grids on the pliers depress the string, leaving a series of indentations on the string surface that increases the friction between the string and the ball so that the tennis player can more easily generate top or under spin on a tennis ball.
Spin Improvement String Pliers
US Patent:
8622096, Jan 7, 2014
Filed:
Jul 10, 2010
Appl. No.:
12/833981
Inventors:
Luyu Yang - Tyngsborough MA, US
International Classification:
B21F 9/00, B25B 7/02
US Classification:
140123, 1401235, 81418
Abstract:
The spin improvement string pliers is a pivotally secured together plier device used to manually restructure and roughen the surface of a synthetic string on a strung tennis racquet by means of plastic deformation. The line grids on the pliers depress the string, leaving a series of indentations on the string surface that increases the friction between the string and the ball so that the tennis player can more easily generate top or under spin on a tennis ball or a racket ball.
Electric Paper Reinforcer/Hole Puncher (Eprhp)
US Patent:
7503369, Mar 17, 2009
Filed:
Feb 3, 2005
Appl. No.:
11/049392
Inventors:
Luyu Yang - Tyngsborough MA, US
Melinda Carlson - Tyngsborough MA, US
Melinda Carlson - Tyngsborough MA, US
International Classification:
B32B 38/04, B29C 65/48, B65C 1/02
US Classification:
156513, 156253, 156516, 156541
Abstract:
We have designed a machine for office use called the Electric Paper Reinforcer/Hole Puncher (EPRHP) to protect the printed document. EPRHP is an electric powered device that can automatically apply a clear, ultra thin layer of plastic film on the edge of printed documents to reinforce them, and then punch 3 holes within the plastic film area on these documents. As a result, these 3 holes will be reinforced and prevent the documents from being torn by the rings of the binder. EPRHP can be further used to reinforce large sized printed drawings by applying the plastic film on the edge of drawings. The EPRHP is a portable machine and can be placed on an office desk. EPRHP can turn a document printed on a piece of regular bond paper into a durable document, without deforming the paper appearance or creating any winkles on the paper.