James C Braatz, 6331102 151St Ave SE #E, Kent, WA 98042

6422519, Jul 23, 2002

Sep 1, 2000

09/653711

James D. Braatz - Greenfield WI

AAA Sales Engineering, Inc. - Oak Creek WI

B61L 1106

246258, 246415 R, 246393

An improved cylinder head for a railroad track switch operator includes totally self-contained electronics and pneumatics for easy and direct replacement of a cylinder head on a prior art switch operator. The improved cylinder head has enhanced porting to improve air flow and speed of operation, a voltage control module permitting the unit to operate with either 24 volt or 12 volt line power, and recessed portions for covering or enclosing delicate and/or sensitive components for maximized protection in harsh outdoor installations.

7140698, Nov 28, 2006

Jul 1, 2004

10/882650

James D. Braatz - Greenfield WI, US
Lowell B. Ziese - Pewaukee WI, US
Richard Bohme - Louisville KY, US

AAA Sales & Engineering Inc. - Oak Creek WI

B60T 8/18

303 227, 210167, 2104165, 104 262

A hydraulic control and operating system is provided for a railroad car retarder to control the movement of railroad cars in railroad classification yard. The system utilizes a double-acting hydraulic cylinder to operate the retarder mechanism and includes a hydraulic control circuit that provides protection against pressure spikes and high pressure excursions, high and low temperature excursions, low oil levels and oil filter fouling. The above system not only shuts itself down to prevent damage, but provides a warning to maintenance staff that service should be performed long before a need for system shut-down is required. The system includes a central operating panel in the rail yard control center, remote control panel located at the position of the retarder and the system can be connected for operation from a completely remote location.

7299025, Nov 20, 2007

Jun 9, 2003

10/457825

Hee Wong - San Jose CA, US
Michael Schwartz - San Jose CA, US
James Braatz - Kent WA, US

National Semiconductor Corporation - Santa Clara CA

H04B 1/06
H04B 7/00
H04B 1/16

455275, 455130, 455227, 4552841

Rejection of local oscillator harmonic response is provided in a mixing circuit with a pair of harmonic gating switches serially connected to the outputs of a balanced differential switching mixer and controlled by a gate clock signal having twice the frequency of a local oscillator signal controlling the switching mixer. An aperture or duty cycle of the gate clock signal determines which harmonic is rejected or suppressed, which is preferably a third and/or fifth harmonic since response of the balanced differential switching mixer to even harmonics is negligible. The resulting simple, efficient circuit is readily integrated directly into a phase-alternating mixer structure for a chopper-direct-conversion radio.

7483683, Jan 27, 2009

Aug 3, 2007

11/890265

Hee Wong - San Jose CA, US
Michael Schwartz - San Jose CA, US
James Braatz - Kent WA, US

National Semiconductor Corporation - Santa Clara CA

H04B 1/06
H04B 7/00

455275, 455130, 455227, 455284

Rejection of local oscillator harmonic response is provided in a mixing circuit with a pair of harmonic gating switches serially connected to the outputs of a balanced differential switching mixer and controlled by a gate clock signal having twice the frequency of a local oscillator signal controlling the switching mixer. An aperture or duty cycle of the gate clock signal determines which harmonic is rejected or suppressed, which is preferably a third and/or fifth harmonic since response of the balanced differential switching mixer to even harmonics is negligible. The resulting simple, efficient circuit is readily integrated directly into a phase-alternating mixer structure for a chopper-direct-conversion radio.

7602818, Oct 13, 2009

Sep 14, 2001

09/953057

Tuan A. Dao - Seattle WA, US
Rodney A. Hughes - Tacoma WA, US
James C. Braatz - Kent WA, US

The Boeing Company - Chicago IL

H04J 3/04

370535, 375375

A transceiver providing Fiber Channel data transfer speeds may be implemented in a lower performance process technology as a single unit, thereby reducing cost. A serializer and deserializer each having multiple lower frequency clocks are provided to obtain the equivalent of a high speed clock capable of use in Fiber Channel systems. Lower speed parallel data is converted to higher speed serial data, and vice versa. A digital frequency counter along with a phase detection circuit provides synchronization. Comma detection is provided for data word alignment.

2002017, Nov 21, 2002

May 16, 2001

09/858854

James Braatz - Greenfield WI, US

F16J015/18

092/16500R

A easily rebuildable pneumatic cylinder for a railroad track switch operator utilizes a fiber-reinforced resin composite cylinder tube and a piston wear band of a composite material. The cylinder is easily disassembled for replacement of all of the seals and the rod bearing, along with the cylinder tube and wear band. All wear and replacement parts are identically used in both common types of pneumatic cylinders in present use.

2022037, Dec 1, 2022

May 27, 2021

17/332709

- Oak Creek WI, US
James D. Braatz - Oak Creek WI, US

Precision Rail and Mfg., Inc. - Oak Creek WI

B61L 5/02
B61L 5/10
B61L 5/06

A switch device for moving switch rails. The switch device includes a motor operatively coupled to move the switch rails into and between first and second positions. The motor is configured for electricity to flow therethrough along a first path and a second path. A first path relay has two normally open contacts each within the first path, where activating the first path relay closes the two normally open contacts thereof. A second path relay has two normally open contacts each within the second path, where activating the second path relay closes the two normally open contacts thereof. The motor moves the switch rails towards the first position when the first path relay is activated and the second path relay is deactivated, and the motor moves the switch rails towards the second position when the second path relay is activated and the first path relay is deactivated.