IP Library › Granted Patent US 9,844,820
Granted Patent B2
US 9,844,820 · App. 15/158,219 · Granted Dec 19, 2017

Forming closely spaced annular internal corrugations in circular waveguides

Inventors: Michelangelo DiMartino (La Mesa, CA); Charles P. Moeller (Del Mar, CA)
Assignee: General Atomics
B23C3/02B23C3/34H01P3/12B23C3/28B23C2220/36B23C2220/40B23C2265/12
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Quick Facts
Patent No.
US 9,844,820
App. No.
15/158,219
Granted
Dec 19, 2017
Kind
B2
Abstract

An apparatus for cutting annular corrugations in an interior surface of a cylindrical tube having a cutter head comprising a plurality of cutting teeth; a drive shaft coupled to the cutter head for spinning the cutter head; a mandrel coupled to the cutter head, wherein the mandrel defines a longitudinal axis, wherein an axis of rotation of the cutter head is parallel to, but in a position not coaxial with the axis of rotation of the cutter head; an outer eccentric coupled to mandrel, wherein the outer eccentric rotates the mandrel, wherein the axis of rotation orbits around the longitudinal axis.

Claims (6)

1. An apparatus for cutting annular corrugations in an interior surface of a cylindrical tube comprising:

a cutter head comprising a plurality of cutting teeth;

a drive shaft coupled to the cutter head for spinning the cutter head;

a mandrel coupled to the cutter head, wherein the mandrel defines a longitudinal axis, wherein an axis of rotation of the cutter head is parallel to, but off-axis from the longitudinal axis:

an outer eccentric coupled to the mandrel, wherein the outer eccentric rotates the mandrel, wherein the axis of rotation orbits around the longitudinal axis of the mandrel;

a spring loaded ball plunger on an outer surface of the mandrel.

Assignments (3)
SECURITY INTEREST Recorded Apr 10, 2020
From: GENERAL ATOMICS
To: BANK OF THE WEST
Reel/Frame 052372/0067 →
PATENT SECURITY AGREEMENT Recorded Jun 20, 2017
From: GENERAL ATOMICS
To: BANK OF THE WEST
Reel/Frame 042914/0365 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 31, 2016
From: DIMARTINO, MICHELANGELO; MOELLER, CHARLES P.
To: GENERAL ATOMICS
Reel/Frame 038755/0532 →
Continuity (1)
Related Publication 20170334002A1 · Nov 23, 2017