Daniel A Swanson

US Patent:

51755181, Dec 29, 1992

Filed:

Oct 15, 1991

Appl. No.:

7/778303

Inventors:

Daniel G. Swanson - Mountain View CA

Assignee:

Watkins-Johnson Company - Palo Alto CA

International Classification:

H03H 700

US Classification:

333168

Abstract:

A high percentage bandwith microwave filter network, according to an embodiment of the present invention, comprises a T-network of capacitors implemented with thin-film techniques by applying a groundplane to one side of an alumina substrate and a first plate to the other side. A silicon nitride dielectric layer having a high density of capacitance is deposited over the first plate, and then a second and third capacitor plate are deposited on the dielectric over the first plate.

US Patent:

48810509, Nov 14, 1989

Filed:

Aug 4, 1988

Appl. No.:

7/228288

Inventors:

Daniel G. Swanson - Mountain View CA

Assignee:

Avantek, Inc. - Milpitas CA

International Classification:

H03H 700

US Classification:

333185

Abstract:

A thin-film, lumped element filter utilizing spiral inductors and capacitive pi networks is disclosed. The filter is fabricated from a planar dielectric substrate having a ground plane on one side thereof and two thin-film metal layers and an insulation layer disposed therebetween on the opposite side of the dielectric substrate. The metal and insulation layers are configured to form one or more capacitive pi networks and spiral inductors, which are electrically interconnected to form the filter.

US Patent:

20210080057, Mar 18, 2021

Filed:

Sep 10, 2020

Appl. No.:

17/017646

Inventors:

Daniel C. Swanson - Chicago IL, US
Karolina Stus - Chicago IL, US
Jeffery L. Konkle - Chicago IL, US

International Classification:

F16N 7/34
B01D 46/46
B01D 46/44
F16N 29/04

Abstract:

A modular digital filter, regulator and lubricator (FRL) connector and system are provided. The modular digital filter, regulator and lubricator connector and system are especially suitable for use in improving compressed air quality so as to extend the life of tools and machines which are connected to the FRL devices. The connector device and system allows for a quick and efficient connection with respect to both electronics and air lines and reduces problems that arise from wire pig-tailing or accidental disconnection of the FRL. The device and system may have digital, visual and audible warnings with respect to the quality of air passing through the system and to the tools and machines.

US Patent:

20200182729, Jun 11, 2020

Filed:

Dec 11, 2018

Appl. No.:

16/215938

Inventors:

Jeffery Lee Konkle - Chicago IL, US
Robert R. Bauer - Chicago IL, US
Daniel C. Swanson - Chicago IL, US
Karolina Stus - Chicago IL, US

International Classification:

G01L 27/00
G01L 17/00
G01L 27/02

Abstract:

The present calibratable tire gauge has a first unit nose piece and a second unit nose piece located partially within a main outer enclosure of the gauge. A clicker mechanism located may allow a user to utilize a special tool to ‘unlock’ the second unit nose piece with respect to the first unit nose piece and immobilize the second unit nose piece with respect to the main outer enclosure. Once ‘unlocked’, a user may twist the scale bar of the gauge to move the first unit nose piece independent from the second unit nose piece. As a result, the measured pressure on the scale bar is altered as a result of the ‘read’ line being lowered or raised with respect to the main outer enclosure.

US Patent:

20170232455, Aug 17, 2017

Filed:

Jan 22, 2017

Appl. No.:

15/412032

Inventors:

Peter A. Grable - CHICAGO IL, US
Daniel C. Swanson - CHICAGO IL, US

International Classification:

B05B 1/02
F16L 37/04
F16L 15/00

Abstract:

An adapter for a blow gun and a method of using the same is provided. The adapter has a generally cylindrical tube having a first end and a second end wherein the first end of the generally cylindrical tube slides onto the distal tip of a blow gun and is held in place by an internal O-ring/D-ring within the adapter which is secured within a groove on the distal tip of the blow gun. The second end of the adapter has internal threading which may therein receive a variety of various nozzle tips without the need to remove the adapter from the blow gun. An exterior side of the generally cylindrical tube of the adapter has a knurled finish for better grasping and tightening the generally cylindrical tube by hand. The present adapter may allow for the utilization of ⅛″ NPS threaded tips on modern pistol grip blow guns.