David J Booth

US Patent:

7144403, Dec 5, 2006

Filed:

Jul 29, 2003

Appl. No.:

10/629404

Inventors:

David E. Booth - Wyomissing Hills PA, US

Assignee:

Alcon, Inc. - Hunenberg

International Classification:

A61F 9/00
A61B 17/32

US Classification:

606166, 30355

Abstract:

A knife having a blade tip configuration that reduces incisional force by providing a more efficient distribution of tissue piercing and cutting forces over the cutting edges. The distal tip of the blade has a profile in plan view in the region of approximately 150 microns from the distal most point of the tip that may be described by the equation w=ad, where w is the distance from the blade's longitudinal axis to the blade's cutting edge, a is a constant of proportionality not greater than 0. 5 and d is the distance along the blade's longitudinal axis from the extreme distal point of the blade tip. The extreme distal point of the tip has a slightly rounded, rather than pointy, profile, with a tip radius of approximately 40 microns or less.

US Patent:

7601163, Oct 13, 2009

Filed:

May 19, 2006

Appl. No.:

11/437300

Inventors:

David E. Booth - Wyomissing Hills PA, US

Assignee:

Alcon, Inc. - Hunenberg

International Classification:

A61F 9/00
A61B 17/32

US Classification:

606166, 30355

Abstract:

A knife having a blade tip configuration that reduces incisional force by providing a more efficient distribution of tissue piercing and cutting forces over the cutting edges. The distal tip of the blade has a profile in plan view that may be described as bounded by the following equations w=5. 886(d)and w=1. 561(d)where w is the distance in microns from the blade's longitudinal axis to the blade's cutting edge and d is the distance in microns along the blade's longitudinal axis from the extreme distal point of the blade tip. The extreme distal point of the tip has a slightly rounded, rather than pointed, profile, with a tip radius of approximately 40 microns or less.

US Patent:

20110120745, May 26, 2011

Filed:

Feb 2, 2001

Appl. No.:

10/181667

Inventors:

David Thomas Booth - Newark DE, US
John David Smith - Cedar Creek TX, US

Assignee:

GORE ENTERPRISE HOLDINGS, INC. - Newark DE

International Classification:

H01B 7/00
H01B 13/00

US Classification:

174113 R, 156 47

Abstract:

The invention relates to a cable () having an elongate core () made of a first dielectric material and having a core outer surface (); and a plurality of elongate conducting elements () arranged about the elongate core (). The elongate conducting elements () have an inner conductor () surrounded by an insulating layer () which is made of a second dielectric material. The outer surface of the inner conductor () is divided into a first outer surface area () and a second outer surface are a () and the first outer surface area () is attached, for example by sintering, to the core outer surface (). The first and second dielectric materials are preferably expanded PTFE. The cable () finds application in a streamer () for use in seismographic surveys of the ocean bottom sub surface.

US Patent:

46784489, Jul 7, 1987

Filed:

Apr 25, 1986

Appl. No.:

6/855601

Inventors:

David E. Booth - New Providence PA
Steven G. Smith - Harrisburg PA
John L. Adams - Sinking Springs PA

Assignee:

RCA Corporation - Princeton NJ

International Classification:

H01J 938

US Classification:

445 60

Abstract:

A device for thumping and flushing a kinescope funnel includes a lift member which moves horizontally to engage the funnel and then vertically to raise the funnel to a thump position. A means for centering and orienting the neck moves in unison with the lift member. A thumper is arranged to thump the funnel in the thump position. A probe vertically moves to enter the funnel through the neck and inject a flushing fluid into the funnel while thumping occurs.