Patrick J Mccormack

US Patent:

47813725, Nov 1, 1988

Filed:

Apr 15, 1987

Appl. No.:

7/038871

Inventors:

Patrick J. McCormack - Hull MA

International Classification:

A63B 2304

US Classification:

272 70

Abstract:

An ice-skating leg exercise device utilizing in one embodiment a pair of rotatably positionable tracks each having a stirrup movable back and forth thereon in which the user's legs are positioned, each track being angularly adjustable with adjustable weight resistance provided against the rearward movement of each stirrup and a body support for the user to rest thereagainst while exercising his legs on the device.

US Patent:

51034786, Apr 7, 1992

Filed:

Oct 12, 1990

Appl. No.:

7/596637

Inventors:

Stephen M. Matyas - Manassas VA
Dennis G. Abraham - Concord NC
Donald B. Johnson - Manassas VA
Ramesh K. Karne - Herndon VA
An V. Le - Arlington VA
Patrick J. McCormack - Rockville MD
Rostislaw Prymak - Dumfries VA
John D. Wilkins - Somerville VA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 932
G06F 704

US Classification:

380 25

Abstract:

A requested cryptographic function is validated for performance in conjunction with a cryptographic key, by inputting a first portion of an associated control vector into a first control vector checker, which outputs a first authorization signal if the requested cryptographic function has been authorized by the originator of the key. A second portion of the control vector is input to a second control vector checker, which outputs a second authorization signal if the requested cryptographic function has been authorized by the originator of the key. Both the first and the second authorization signals are applied to a cryptographic processor which initiates the execution of the requested cryptographic function.