Bradley N Stoops

US Patent:

6913182, Jul 5, 2005

Filed:

Jan 15, 2003

Appl. No.:

10/342861

Inventors:

Bradley N. Stoops - Bay Village OH, US

Assignee:

Precision Dispensing Equipment, Inc. - Bay Village OH

International Classification:

B23K001/00
B23K020/08
B23K005/00
B23K001/20

US Classification:

228 33, 228 13

Abstract:

Apparatus and methods for applying atomized pulsed streams of flux to a surface such as a printed circuit board. The flux is applied discretely in selected locations and at selected thickness based upon pulse rate, fluid pressure, air pressure and traverse speed. The apparatus consists of a precise orifice with a surrounding air passage for atomizing and focusing the flux at a discrete location on the surface. Controls are incorporated for selecting, controlling and monitoring the flux deposition amount and location, for coordinating with the transport motion system, for integrating with the adjacent air flow and for selecting the atomized or non-atomized method of application.

US Patent:

56158289, Apr 1, 1997

Filed:

Mar 2, 1995

Appl. No.:

8/397395

Inventors:

Bradley N. Stoops - Bay Village OH

Assignee:

Precision Dispensing Equipment, Inc. - Bay Village OH

International Classification:

B23K 3700

US Classification:

228223

Abstract:

A dispensing apparatus for applying a pulsed thin stream of flux to a surface such as a printed circuit board. The stream of flux is pulsed at a high rate to apply a thin layer of flux on the surface. The dispensing head consists of multiple orifices for applying the flux to the board. The streams of flux are angularly disposed and a pan is positioned for capturing flux which passes by the board. The board is conveyed by the dispensing head. Controls are incorporated for board sensing and identification, application width selection, precise pressure control, fluid flow monitoring and system safety conditions.

US Patent:

52944590, Mar 15, 1994

Filed:

Aug 27, 1992

Appl. No.:

7/935943

Inventors:

Patrick T. Hogan - Lorain OH
Bernard J. McHugh - Bloomsburg PA
James J. Turner - Amherst OH
Takaji Shimada - Saitama, JP
Tsuyoshi Nishimura - Tokyo, JP
Bradley N. Stoops - Bay Village OH

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05D 102

US Classification:

427 96

Abstract:

Apparatus and methods for spray coating selected areas of a circuit board with an insulative coating material without coating regions of the circuit board to be left uncoated. A liquid spray device emits the coating material and an air assist attachment connected to the liquid spray device directs jets of air into impinging relation with the coating material emitted therefrom to transform the coating material into an atomized, shaped spray pattern for coating the selected areas. The air assist attachment can be disabled so that the spray device transforms the coating material into a non-atomized, shaped spray pattern for coating selected areas without coating regions of the circuit board to be left uncoated.

US Patent:

53280857, Jul 12, 1994

Filed:

Aug 18, 1992

Appl. No.:

7/931786

Inventors:

Bradley N. Stoops - Bay Village OH
Melaney S. Stoops - Bay Village OH

Assignee:

Precision Dispensing Equipment, Inc. - Bay Village OH

International Classification:

B23K 3700

US Classification:

228 33

Abstract:

A dispensing apparatus for applying a thin stream of flux to a surface of a printed circuit board. The dispensing head travels at a high rate of speed relative to the board during the dispensing of flux to apply thin layers of flux thereto. Preferably, the dispensing head moves transversely to the work path of a conveyor that transports the board through a flux station, at a rate of approximately 20 to 90 inches per second. Tips that dispense the flux are angularly disposed relative to the board and, if desired, make multiple passes over the surface to coat selected regions twice. Either the board is incrementally advanced through the flux station or the dispensing head is incrementally advanced relative to the board so that flux is applied when the board is stationary.