Ronald Scott Roberts

US Patent:

41952529, Mar 25, 1980

Filed:

Nov 16, 1978

Appl. No.:

5/961437

Inventors:

Ronald W. Roberts - Cornelius OR

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

G01R 1328

US Classification:

315392

Abstract:

An apparent zero delay of a trigger view signal with respect to a normal vertical signal in an oscilloscope is provided by horizontally shifting the trigger view display to coincide with the normal vertical display. This is achieved by injecting a predetermined offset current into the sweep sawtooth output amplifier only when the trigger view signal is being displayed.

US Patent:

20140240963, Aug 28, 2014

Filed:

Feb 28, 2013

Appl. No.:

13/780411

Inventors:

Ronald Roberts - Lafayette CO, US

International Classification:

A45B 3/00
A45B 3/02

US Classification:

362102, 135 66

Abstract:

An improved cane with an internal grasping apparatus including an actuator on the cane handle and a plurality of clamps that extends from the foot or base of the cane. A cord system within the casing of the cane connects the actuator to the clamps so that when the actuator is in use, the clamps close or open to either grasp or release objects, depending on the amount of pressure applied to the actuator. Applying pressure to the actuator extends a plurality of clamps from the distal end of the cane that can be used to assist with grasping of objects. Releasing pressure to the actuator on the cane handle will retract the clamps back into the distal end of the cane to where the clamps are hidden.