Kenneth J Graham

US Patent:

6637347, Oct 28, 2003

Filed:

Sep 20, 2002

Appl. No.:

10/251591

Inventors:

Barry M. Richard - Omaha NE
Kenneth R. Graham - Omaha NE
Roger W. Hike - Omaha NE

Assignee:

Chief Industries, Inc. - Grand Island NE

International Classification:

B61D 1700

US Classification:

105378, 49220

Abstract:

A module is provided for use with a drive mechanism particularly suited for plug-type railcar doors to prevent âoverspinningâ and âdrifting. â The mechanism disclosed is a double brake-type mechanism and includes a first rotatably mounted member. The first member is arranged to transmit force in either direction of rotation and is connected with an input drive mechanism. The drive mechanism includes a rotatable pinion gear carried on a rotatable input shaft extending generally parallel to the axis of rotation of the first member. The pinion gear is connected with the shaft by means which cause it to move longitudinally of the shaft to a first or a second spaced point depending upon the direction the shaft is rotated. At each of the points, there are ratchets which are freely rotatable relative to the shaft except when the pinion gear moves to engage them at their respective points. When engaged, the ratchets permit movement of the shaft only in one direction.

US Patent:

8380256, Feb 19, 2013

Filed:

Jul 17, 2007

Appl. No.:

11/778703

Inventors:

Mark Henneberg - Olathe KS, US
Kevin Kenny - Ashburn VA, US
Kenneth J. Graham - Parkville MO, US

Assignee:

Sprint Communications Company L.P. - Overland Park KS

International Classification:

H04B 1/38
H02J 3/12
G05F 1/10
G06F 1/00

US Classification:

455572, 323234, 713300

Abstract:

A failsafe protection system for a distributed telecommunications site ties power shut off to a network interface unit to power supply conditions at a base transceiver station. In one aspect, the system is integrated with circuitry at the distributed telecommunications site, and includes an electrical power supplying device, a low voltage disconnect and a relay coupled with a DC bus. Additionally, the failsafe protection system includes a first circuit pathway coupling the base transceiver station electronics to the low voltage disconnect and a second circuit pathway coupling the network interface unit to the DC bus through the relay. Both the low voltage disconnect and the relay selectively control the coupling of the base transceiver station and the network interface unit, respectively, with the DC bus.