Bobby Wayne Mason

US Patent:

47875488, Nov 29, 1988

Filed:

Jul 27, 1987

Appl. No.:

7/078170

Inventors:

Louis A. Abbagnaro - Silver Spring MD
Bobby L. Mason - Alexandria VA

Assignee:

Pace Incorporated - Laurel MD

International Classification:

B23K 304
B23K 3704

US Classification:

228 62

Abstract:

A nozzle device is adjustably positionable over a component which is disposed on a substrate, for registering relatively precisely against the component relative to the substrate for delivering a flow of uniformly heated air. The heated air is directed to the sides of the component to melt solder associated with terminals thereon. A series of changeable nozzles can be used for various component and terminal configurations and can be moved into or out of registry with the component. A vacuum apparatus can be provided for contacting the component to remove the component from the substrate. Notched end portions of inwardly projecting walls on the nozzle provide accurate registration with upper edges of the component, and permit accurate spacing of a skirt portion of the device relatively evenly from the substrate and relatively evenly from the sidewalls of the component.

US Patent:

48474711, Jul 11, 1989

Filed:

Jan 26, 1988

Appl. No.:

7/126890

Inventors:

Linus E. Wallgren - Rockville MD
Bobby L. Mason - Alexandria VA
William J. Siegel - Siver Spring MD
Ole V. Olesen - Annapolis MD
Louis A. Abbagnaro - Columbia MD

Assignee:

Pace, Incorporated - Laurel MD

International Classification:

H05B 102

US Classification:

219497

Abstract:

A heater unit and control circuitry therefor, the heater unit typically being employed as a preheater or primary heater for the installation and removal of electronic components from a PCB or the like and having various means for accommodating (a) an uneven surface or the presence of other components on the underside of the board or (b) an unlevel board. Moreover, a heater unit for sequentially providing preheat and primary heat from different zones of the heate is disclosed. A probe for use with the heater for sensing the temperature at various points on the board is also disclosed. The circuitry is characterized by ease of calibration of the heater temperature, the temperature transducing circuits, and the temperature setting circuits thereof. Moreover, circuitry is provided to insure the same voltage out of each input source in response to the input source measuring or setting a common temperature.

US Patent:

47429470, May 10, 1988

Filed:

Oct 21, 1986

Appl. No.:

6/921220

Inventors:

Bradford W. Coffman - Norcross GA
Bobby L. Mason - Alexandria VA

Assignee:

Pace, Incorporated - Laurel MD

International Classification:

B23K 3700

US Classification:

228105

Abstract:

A optical system for stand alone use or for use with a device for attaching modular electronic components to or removing them from a substrate, including a microscope which is horizontally rotatable through 0. degree. , +90. degree. and -90. degree. positions relative to a component to permit viewing of three sides of the component and thus facilitate alignment of the component terminals with leads on the substrate together with inspection of soldered joints. A unit for vertically rotating the microscope through 90. degree. with respect to the component is also disclosed which includes means for quickly positioning and locking the microscope at a preset vertical orientation such as 45. degree. to further facilitate the alignment and inspection functions. Mirrors are also disclosed which enable viewing of three or four sides of a component in the 0. degree.

US Patent:

48555720, Aug 8, 1989

Filed:

Jan 23, 1987

Appl. No.:

7/006422

Inventors:

Linus E. Wallgren - Rockville MD
Bobby L. Mason - Alexandria VA
William J. Siegel - Silver Spring MD
Ole V. Olesen - Annapolis MD
Louis A. Abbagnaro - Columbia MD

Assignee:

PACE Incorporated - Laurel MD

International Classification:

H05B 368

US Classification:

219456

Abstract:

A heater unit and control circuitry therefor, the heater unit typically being employed as a preheater or primary heater for the installation and removal of electronic components from a PCB or the like and having various means for accommodating (a) an uneven surface or the presence of other components on the underside of the board or (b) an unlevel board. Moreover, a heater unit for sequentially providing preheat and primary heat from different zones of the heater is disclosed. A probe for use with the heater for sensing the temperature at various points on the board is also disclosed. The circuitry is characterized by ease of calibration of the heater temperature, the temperature transducing circuits, and the temperature setting circuits thereof. Moreover, circuitry is provided to insure the same voltage out of each input source in response to the input source measuring or setting a common temperature.

US Patent:

45844607, Apr 22, 1986

Filed:

Feb 24, 1984

Appl. No.:

6/583219

Inventors:

Bobby L. Mason - Alexandria VA
Hubert E. Bush - Sykesville MD

Assignee:

Pace Incorporated - Laurel MD

International Classification:

H05B 100

US Classification:

219150V

Abstract:

A portable machine is disclosed for setting eyelets and the like in printed circuit boards and includes an upper tool connected to a mandrel mounted in a frame and movable into and out of engagement with a lower tool by a toggle means. The lower tool is resiliently mounted in the frame beneath the upper tool and has a support structure beneath it which includes a slidable pressure control means for predetermining the maximum setting pressure applied to a workpiece by the upper and lower tools.