William D Walters

US Patent:

53942205, Feb 28, 1995

Filed:

Oct 28, 1993

Appl. No.:

8/144679

Inventors:

Charles J. Leonhart - Schaumburg IL
William R. Walters - Union IL

Assignee:

nuArc Company, Inc. - Niles IL

International Classification:

G03B 2720

US Classification:

355 92

Abstract:

A vacuum blanket apparatus for maintaining precise registration between an image forming sheet and a light sensitive sheet when subjected to controlled exposure to light passing through a glass panel includes a vacuum blanket having an upper cover of flexible sheet material adapted to contact the light sensitive sheet for biasing the same and said image sheet toward a planar face of the glass panel when the panel is locked in position parallel to the vacuum blanket. The blanket cover is formed with at least one elongated slot for receiving one or more registration pins for registering the image forming and light sensitive sheets. At least one deformable resilient pressure element in the slot is deformable to bias the sheets toward the glass panel.

US Patent:

52187454, Jun 15, 1993

Filed:

Sep 6, 1991

Appl. No.:

7/755641

Inventors:

Robert Hollis - San Leandro CA
William D. Walters - Byron CA

International Classification:

A44B 2100

US Classification:

24483

Abstract:

A tank strap tightening actuator for securing a SCUBA air tank to a diver's backpack by means of a strap which engages the backpack and surrounds the tank with the two free ends of the strap being hooked to said actuator around said tank, said actuator being activated by compressed air to tighten the strap.

US Patent:

54248051, Jun 13, 1995

Filed:

Oct 28, 1993

Appl. No.:

8/144573

Inventors:

Charles J. Leonhart - Schaumburg IL
William R. Walters - Union IL

Assignee:

nuArc Company, Inc. - Niles IL

International Classification:

G03B 2720

US Classification:

355 92

Abstract:

Vacuum frame apparatus is provided for maintaining precise registration between and an image forming sheet to be reproduced and a light sensitive sheet adapted for controlled exposure to light. The apparatus includes a light transmitting glass panel having a planar surface for contact with the image sheet and a vacuum blanket assembly including a blanket of thin, flexible sheet material adapted to contact the light sensitive sheet and bias the sheets toward the planar surface of the glass panel while maintained in precise registration. The vacuum blanket assembly includes a peripheral edge seal around the blanket for sealing engagement with the planar face of the glass panel and means for evacuating the space inside the peripheral edge bead between the planar face of the panel and the blanket of the vacuum blanket. A novel platen system is provided for moving the vacuum blanket and sheets thereon bodily toward the glass panel in a direction perpendicular thereto to engage the peripheral edge bead in a floating manner whereby the sealing pressure is equal along the entire length thereof. Thereafter a vacuum can be rapidly drawn between the sheets, the vacuum blanket and the planar surface of the glass panel.

US Patent:

46225269, Nov 11, 1986

Filed:

Sep 14, 1984

Appl. No.:

6/650651

Inventors:

Lon M. Schneider - Arlington Heights IL
William R. Walters - McHenry IL

Assignee:

Corcom, Inc. - Libertyville IL

International Classification:

H03H 709

US Classification:

333181

Abstract:

A power line filter for removing interference is provided which is formed on a printed circuit board which has an extended grounding area and to which are mounted parallel capacitors, a pair of line inductors and a parallel resistor. Each of the inductors is formed as multi-section coils wound on plastic bobbins and which can be machine wound and the two wound inductors are then mounted on rectangular cores of U-U or U-I-shape to form the line inductors. At least two of the capacitors are rectangular shaped and are mounted on opposite ends of the line inductors and the assembled filter is placed into a case and encapsulated through openings formed in the printed circuit board.