Radiation absorbing apparatus

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.

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.

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.