John Alan Roy

US Patent:

6778526, Aug 17, 2004

Filed:

Dec 22, 2000

Appl. No.:

09/742300

Inventors:

Benjamin J. Brown - Chichester NH
Richard P. Modelski - Hollis NH
John P. Roy - Brookline NH

Assignee:

Nortel Networks Limited

International Classification:

H04L 1228

US Classification:

370351, 370438, 710100

Abstract:

A high speed access bus interface for a communications network. The interface allows uni-directional transfer of data packets at a fast path processing rate of about 10 gigabits per second. The interface uses a master port and a slave port in a chip to chip data transfer scheme. The master and slave ports may have one or more than one data channel for transferring data packets. The master port includes a clock signal for synchronizing the transfer from the master port to the slave port. The slave may send an asynchronous signal to the master port in order to initiate the master port to stop or stall the pipeline transfer of data packets until space is made available in the slave port buffer. In addition to the clock synchronization, the interface utilizes an enable signal, a start of packet signal, an end of packet signal, an error signal (if necessary), a last valid byte signal, and a parity bit signal to identify, address, each data packet in the data stream. If a processing error occurs, the master port error signal to the slave port also initiates the slave port to disregard the previous data packet.

US Patent:

20090101042, Apr 23, 2009

Filed:

May 30, 2008

Appl. No.:

12/156439

Inventors:

James Foote - Webster NH, US
Dennis Inman - Warner NH, US
John Roy - Deering NH, US

Assignee:

Glyde-Rail Licensing, LLC - Webster NH

International Classification:

B61F 13/00

US Classification:

1052151

Abstract:

A glyde-rail apparatus removably attached to a carrier such as an excavator to enable the excavator to mount and demount at any point along a railroad track and to travel along the railroad track without damaging the railroad track. A non-metallic cover attaches to the track of the excavator. A front swing arm assembly and a back swing arm assembly attach to ends of the excavator. A first pair of hydraulic cylinders on the front swing arm assembly and a second pair of hydraulic cylinders on the back swing arm assembly enable rail wheels to be raised or lowered. An operator of the carrier controls the raising and lowering of the front swing arm assembly and the back swing arm assembly from within a cab of the carrier by a combination of hydraulic controls in the carrier and the glyde-rail apparatus.