Radiation absorbing apparatus

Claim 2

In combination with radio frequency (RF) dielectric heating equipment of the type having a supporting frame, RF power source, control circuits and timers, movable and stationary tools, means to move at least one tool, RF power conductive connections among the tools and the RF power source, an improvement therein by addition thereto of apparatus for absorbing unwanted radiation comprising: at least one movable RF conductor conductively connected to a movable tool of the RF dielectric heating equipment; a first stationary RF conductor conductively connected to a first point on a stationary tool work table; a second stationary RF conductor conductively connected to a second point on the stationary tool work table; RF conducting means to permit RF conduction between the movable conductor and the stationary conductors; a first capacitor conductively interposed between the movable conductor and stationary conductors; and a second capacitor and an inductor electrically interposed between the first stationary RF conductor and the second stationary RF conductor.

Claim 3

The apparatus of claim 1 wherein at least a part of the RF conducting means comprises a flexible conductor.

Claim 4

The apparatus of claim 2 wherein the flexible conductor is formed in a loop having its exterior oriented toward the RF dielectric heating equipment.

Claim 5

The apparatus of claim 2 wherein the flexible conductor is a phosphor bronze strap.

Claim 6

The apparatus of claim 1 wherein the stationary RF conductor is formed in a loop having its exterior oriented toward the RF dielectric heating equipment.

Claim 7

The apparatus of claim 1 wherein the inductor is a strap configured as a loop to form a fractional turn inductor.

Claim 8

The apparatus of claim 6 wherein the inductor is adjustable to form a resonating circuit with the second capacitor.

Claim 9

The apparatus of claim 1 which further comprises at least one side radiation reflector.

Claim 10

The apparatus of claim 1 which further comprises at least one front radiation reflector.

Claim 11

The apparatus of claim 9 which further comprises at least one capacitor electrically interposed between the front radiation reflector and the movable tool of the RF dielectric heating equipment.

Claim 12

In combination with radio frequency (RF) dielectric heating equipment of the type having a supporting frame, RF power source, control circuits and timers, movable and stationary tools, means to move at least one tool, RF power conductive connections among the tools and the RF power source and a radiation absorbing apparatus including an improvement of the radiation absorbing apparatus comprising: at least one movable RF conductor conductively connected to a movable tool of the RF dielectric heating equipment; a first stationary RF conductor conductively connected to a first point on a stationary tool work table; a second stationary RF conductor conductively connected to a second point on the stationary tool work table; RF conducting means to permit RF conduction between the movable conductor and the stationary conductors; a first capacitor conductively interposed between the movable conductor and stationary conductors; and a second capacitor and a fractional turn inductor configured as a loop with its exterior toward the RF dielectric heating equipment, said second capacitor and fractional turn inductor electrically interposed between the first stationary RF conductor and the second stationary RF conductor.

Claim 13

In combination with radio frequency (RF) dielectric heating equipment of the type having a supporting frame, RF power source, control circuits and timers, movable and stationary tools, means to move at least one tool, RF power conductive connections among the tools and the RF power source and a radiation absorbing apparatus including an improvement of the radiation absorbing apparatus comprising: at least one movable RF conductor conductively connected to a movable tool of the RF dielectric heating equipment; a first stationary RF conductor conductively connected to a first point on a stationary tool work table; a second stationary RF conductor conductively connected to a second point on the stationary tool work table; RF conducting means to permit RF conduction between the movable conductor and the stationary conductors; a first capacitor conductively interposed between the movable conductor and stationary conductors; and a second capacitor and a fractional turn inductor configured as a loop with its exterior toward the RF dielectric heating equipment, said second capacitor and fractional turn inductor electrically interposed between the first stationary RF conductor and the second stationary RF conductor.

Claim 14

In combination with radio frequency (RF) dielectric heating equipment of the type having a supporting frame, RF power source, control circuits and timers, movable and stationary tools, means to move at least one tool, RF power conductive connections among the tools and the RF power source and a radiation absorbing apparatus including an improvement of the radiation absorbing apparatus comprising: at least one left movable RF conductor and one right movable RF conductor each conductively connected to a movable tool of the RF dielectric heating equipment; a first left stationary RF conductor and a first right stationary RF conductor each conductively connected respectively to a first left point and a first right point on a stationary tool work table; a second left stationary RF conductor and a second right stationary RF conductor each conductively connected respectively to a second left point and a second right point on the stationary tool work table; RF conducting means to permit RF conduction between corresponding left movable RF conductor and left stationary RF conductors, and to permit RF conduction between corresponding right movable RF conductor and right stationary RF conductors; a first left capacitor conductively interposed between the left movable RF conductor and left stationary RF conductors; a first right capacitor conductively interposed between the right movable RF conductor and right stationary RF conductors; a left second capacitor and a left fractional turn inductor configured as a loop with its exterior toward the RF dielectric heating equipment, said left second capacitor and left fractional turn inductor conductively interposed between the first left stationary RF conductor and the second left stationary RF conductor, and a right second capacitor and a right fractional turn inductor configured as a loop with its exterior toward the RF dielectric heating equipment, said right second capacitor and right fractional turn inductor conductively interposed between the first right stationary RF conductor and second right stationary RF conductor.

Claim 15

In combination with radio frequency (RF) dielectric heating equipment of the type having a supporting frame, RF power source, control circuits and timers, movable and stationary tools, means to move at least one tool, RF power conductive connections among the tools and the RF power source and a radiation absorbing apparatus including an improvement of the radiation absorbing apparatus comprising: at least one left movable RF conductor and one right movable RF conductor each conductively connected to a movable tool of the RF dielectric heating equipment; a first left stationary RF conductor and a first right stationary RF conductor each conductively connected respectively to a first left point and a first right point on a stationary tool work table; a second left stationary RF conductor and a second right stationary RF conductor each conductively connected respectively to a second left point and a second right point on the stationary tool work table; RF conducting means to permit RF conduction between corresponding left movable RF conductor and left stationary RF conductors, and to permit RF conduction between corresponding right movable RF conductor and right stationary RF conductors; a first left capacitor conductively interposed between the left movable RF conductor and left stationary RF conductors; a first right capacitor conductively interposed between the right movable RF conductor and right stationary RF conductors; a left second capacitor and a left fractional turn inductor configured as a loop with its exterior toward the RF dielectric heating equipment, said left second capacitor and left fractional turn inductor conductively interposed between the first left stationary RF conductor and the second left stationary RF conductor, and a right second capacitor and a right fractional turn inductor configured as a loop with its exterior toward the RF dielectric heating equipment, said right second capacitor and right fractional turn inductor conductively interposed between the first right stationary RF conductor and second right stationary RF conductor.

Claim 16

In combination with radio frequency (RF) dielectric heating equipment of the type having a supporting frame, RF power source, control circuits and timers, movable and stationary tools, means to move at least one tool, RF power conductive connections among the tools and the RF power source, an improvement therein by addition thereto of apparatus for absorbing unwanted radiation comprising: at least one left movable RF conductor and one right movable RF conductor each conductively connected to a movable tool of the RF dielectric heating equipment; a first left stationary RF conductor and a first right stationary RF conductor each conductively connected respectively to a first left point and a first right point on a stationary tool work table; a second left stationary RF conductor and a second right stationary RF conductor each conductively connected respectively to a second left point and a second right point on the stationary tool work table; RF conducting means to permit RF conduction between corresponding left movable RF conductor and left stationary RF conductors, and to permit RF conduction between corresponding right movable RF conductor and right stationary RF conductors; a first left capacitor conductively interposed between the left movable RF conductor and left stationary RF conductors; a first right capacitor conductively interposed between the right movable RF conductor and right stationary RF conductors; a left second capacitor and a left inductor electrically interposed between the first left stationary RF conductor and the second left stationary RF conductor; and a right second capacitor and a right inductor electrically interposed between the first right stationary RF conductor and second right stationary RF conductor.

Claim 17

In combination with radio frequency (RF) dielectric heating equipment of the type having a supporting frame, RF power source, control circuits and timers, movable and stationary tools, means to move at least one tool, RF power conductive connections among the tools and the RF power source, an improvement therein by addition thereto of apparatus for absorbing unwanted radiation comprising: at least one left movable RF conductor and one right movable RF conductor each conductively connected to a movable tool of the RF dielectric heating equipment; a first left stationary RF conductor and a first right stationary RF conductor each conductively connected respectively to a first left point and a first right point on a stationary tool work table; a second left stationary RF conductor and a second right stationary RF conductor each conductively connected respectively to a second left point and a second right point on the stationary tool work table; RF conducting means to permit RF conduction between corresponding left movable RF conductor and left stationary RF conductors, and to permit RF conduction between corresponding right movable RF conductor and right stationary RF conductors; a first left capacitor conductively interposed between the left movable RF conductor and left stationary RF conductors; a first right capacitor conductively interposed between the right movable RF conductor and right stationary RF conductors; a left second capacitor and a left inductor electrically interposed between the first left stationary RF conductor and the second left stationary RF conductor; and a right second capacitor and a right inductor electrically interposed between the first right stationary RF conductor and second right stationary RF conductor.

Claim 18

The apparatus of claim 13 wherein at least a part of the RF conducting means comprises a flexible conductor.

Claim 19

The apparatus of claim 14 wherein the flexible conductor is formed in a loop having its exterior oriented toward the RF dielectric heating equipment.

Claim 20

The apparatus of claim 14 wherein the flexible conductor is a phosphor bronze strap.

Claim 21

The apparatus of claim 13 wherein the stationary RF conductors are formed in a loop having its exterior oriented toward the RF dielectric heating equipment.

Claim 22

The apparatus of claim 13 wherein at least one inductor is a strap configured as a loop to form a fractional turn inductor.

Claim 23

The apparatus of claim 18 wherein each inductor is adjustable to form a resonating circuit with each corresponding second capacitor.

Claim 24

The apparatus of claim 13 which further comprises at least one side radiation reflector.

Claim 25

The apparatus of claim 13 which further comprises at least one front radiation reflector.

Claim 26

The apparatus of claim 21 which further comprises at least one capacitor electrically interposed between the front radiation reflector and the movable tool of the RF dielectric heating equipment.