Charles A Schein, 811920 Landwehr Rd, Northbrook, IL 60062

6650134, Nov 18, 2003

Apr 18, 2002

10/124846

Charles A. Schein - Glenview IL, 60025

Charles A. Schein - Glenview IL

G01R 3102

324761, 324754, 324765

A method for connecting a testing device, used for in-circuit testing of a unit under test, to a test fixture used to support the unit under test, without the use of discrete wiring. First electrical contacts on the testing device are arranged in a first layout and second electrical contacts on the test fixture are arranged in a second layout different from the first layout. A translator board is provided having third electrical contacts arranged in the first layout on a first surface, and fourth electrical contacts arranged in the second layout on a second surface with conductive traces forming an electrical connection therebetween. The translator board is placed on the testing device such that the third electrical contacts directly contact and are electrically with the first electrical contacts. The fourth electrical contacts of the translator board are aligned with corresponding ones of the second electrical contacts on the test fixture and an electrical connection therebetween is provided using contact probes.

5513099, Apr 30, 1996

Feb 8, 1993

8/015219

Charles Schein - Skokie IL

Probot Incorporated - Branford CT

G06K 900

36416701

The circuit board repair and rework apparatus comprises: a camera; a device for positioning a circuit board in a predetermined location beneath the camera; a computer including a CPU and memory; electrical circuitry coupled between the camera and the computer for digitizing the camera image and supplying the digitized representation of the camera image to the computer; a visual display coupled to the computer; the memory storing "GERBER" data related to a plot or layout of the circuit board positioned beneath the camera; electro mechanical structure coupled to the computer for positioning the camera at a desired position over the circuit board; electro mechanical structure for focusing the camera on the circuit board; and, input devices and circuitry to the computer for controlling the position of the camera and for causing an overlay on the visual display between a plot of the digitized camera image of the circuit board and the plot of the circuit board obtained from the "GERBER" data.

6208158, Mar 27, 2001

Jun 3, 1998

9/089702

Charles A. Schein - Glenview IL
Silvano A. Romeo - Glenview IL

Schein Research, Inc. - Glenview IL

G01R1/073

324761

A wireless assembly for communicating electrical signals between test equipment and a unit under test using contact probes having at a first end a head electrically connected to a test point on the unit under test and a contact at a second end. The wireless assembly includes a translator board electrically connected to the test equipment; a probe plate in a spaced relationship with the translator board, at least one probe socket having a compression ring and a contact, the probe socket being fitted through holes in the probe plate; and a contact receptacle provided on and electrically connected to the translator board. The contact receptacle provides wireless electrical interconnection between the probe and the translator board by exerting only a circumferential force on the probe, generally without exerting a static force on the translator board. The contact receptacle is configured to eliminate transient forces caused by flexure of the probe plate from being transmitted to the translator board. Further, in densely populated units under test, standard vias, i. e.

6326799, Dec 4, 2001

Feb 29, 2000

9/515454

Charles A. Schein - Glenview IL

G01R 3102

324754

A wireless assembly for communicating electrical signals between test equipment and a unit under test using contact probes having at a first end a spring-loaded head electrically connected to a test point on the unit under test, and having at a second end a fixed contact post. The wireless assembly is provided with a translator board having at least one conductive pad electrically connected to the test equipment. A guide plate having a first through hole communicating with a bore is provided on the translator board. A contact receptacle is provided in the bore and electrically contacts the conductive pad. The contact receptacle is adapted to at least partially receive the contact post, and is provided with at least one contact finger configured to swipe the contact post and maintain electrical connection therebetween. A spring provided in the bore urges the contact receptacle into electrical contact with the at least one conductive pad. The contact receptacle is configured to allow travel of the contact post while maintaining electrical connection therebetween and without transmitting a transient force to the translator board.