Ralph E Lake Deceased407 Grove St, Durand, KS 66783

4843707, Jul 4, 1989

Aug 19, 1987

7/086918

Ralph J. Lake - Yorba Linda CA
Dean-Yuan Liu - Canoga Park CA

Sanders Associates, Inc. - Nashua NH

A47B 1300

29432

A method and apparatus for routing, holding, and hiding cables associated with electronics devices. The preferred embodiment is an extrusion for application to a surface of an electronics device or incorporation into the framework thereof defining a groove capable of routing, holding, and hiding the electrical cable(s). The extrusion has a cross-section comprising a plurality of sides connected to one another to define a desired shape for the extrusion. A pair of the sides have a generally V-shaped orientation with respect to one another thereby forming a longitudinal slot in the extrusion capable of containing the cable therein. The slot-forming pair of sides each includes opposed portions comprising a plurality of adjacent V-shaped segments thereby forming opposed longitudinal teeth in the sidewalls of the slot capable of releasably gripping a cable disposed in the slot.

4776097, Oct 11, 1988

Aug 27, 1987

7/090148

Ralph J. Lake - Yorba Linda CA

Sanders Associates, Inc. - Nashua NH

B43L 1300

33 181

In a graphics plotter having motor control logic for controlling a motor employed in the process of drawing a series of vector lines comprising a plot, an improvement to the logic for applying optimum control of the motor. The length of each next vector to be drawn is first calculated. The logic for controlling the motor is then self-adjusting as a function of whether the next vector line to be drawn is a short-length vector less than a pre-established length or a long-length vector longer than said pre-established length. In particular, the invention is employed in a graphics plotter having a motor for driving a penholding apparatus along an axis and a motor controller for accelerating and driving the motor to draw a series of vector lines and the aforesaid method is employed to apply optimum acceleration to the motor and comprises the steps of calculating the length of the next vector to be drawn and applying a step acceleration to the motor to draw short-length vectors less than a pre-established length and applying a ramp acceleration to the motor to draw vectors longer than said pre-established length.

4872023, Oct 3, 1989

Jan 7, 1988

7/141652

Ralph J. Lake - Yorba Linda CA
Franklyn L. Wiley - Long Beach CA
A. Daniel Coby - Brea CA
John Pluth - Hacienda Heights CA

Sanders Associates, Inc. - Nashua NH

G01D 1524
G01D 900
G06K 1500

346 11

A method and apparatus for providing platen mapping for known clearance pen movement in a graphics plotter system having a platen over which paper is moved longitudinally to create one axis, penholding apparatus moved transversely across the platen and the paper to create the other axis, and a controlled raising and lowering mechanism connected to the penholding apparatus for lowering a pen being held therein into contact with, for raising it from contact with the paper, and for providing a relative vertical position value signal. Vertical sensing apparatus is connected to the penholding apparatus for sensing the top surface of the platen. First logic is operably connected to the vertical sensing appartus and to receive the vertical position value signal from the controlled raising and lowering mechanism for calculating and saving a plurality of deviation values indicating the distance deviation of the platen top surface from parallel at a plurality of spaced points across the platen. Finally, second logic is operably connected to the controlled raising and lowering mechanism for adjusting the position of the penholding apparatus as a function of the deviation values to maintain the penholding apparatus at a known distance from the top surface of the platen as the penholding apparatus is moved transversely across the platen. Various methods of pen movement employing the platen mapping data are shown.

4799314, Jan 24, 1989

Jul 2, 1987

7/069549

Ralph Lake - Yorba Linda CA

Unisys Corporation - Blue Bell PA

H05K 500
H05K 336

29846

A mounting method for printed circuit boards provides improved electromagnetic interference reduction while minimizing the required number of mounting screws. A conductive base plate formed with supporting members is configured to mate with a grounding circuit on the board. A central mounting screw places the board in compression to provide electrical continuity between the grounding circuit and the supporting members of the conductive plate.

4800402, Jan 24, 1989

Jan 7, 1988

7/142059

Ralph J. Lake - Yorba Linda CA
Franklyn L. Wiley - Long Beach CA
A. Daniel Coby - Brea CA
John Pluth - Hacienda Heights CA

CALCOMP Inc. - Anaheim CA

G01D 1524
G01D 900
G06F 15626

346139R

A method and apparatus for providing automatic paper edge finding and sizing in a graphics plotter system having a platen over which paper is moved longitudinally to create one axis, penholding apparatus moved transversely across the platen and the paper to create the other axis, and a controlled raising and lowering mechanism connected to the penholding apparatus for lowering a pen being held therein into contact with, for raising it from contact with the paper, and for providing a relative vertical position value signal. Vertical sensing apparatus is connected to the penholding apparatus for sensing the top surface of the platen. First logic is operably connected to the vertical sensing apparatus and to receive the vertical position value signal from the controlled raising and lowering mechanism for calculating and saving a plurality of values indicating the distance to the platen top surface at a plurality of spaced points across the platen. There is edge sensing apparatus carried by the penholding apparatus and cooperating with the vertical sensing apparatus for sensing the edges of paper, third logic for automatically moving the paper from end to end over the platen and for saving the positional values of the ends of the paper as found by the edge sensing apparatus, and fourth logic for automatically moving the penholding apparatus from side to side over the paper and for saving the positional values of the side edges of the paper as found by the edge sensing apparatus.