(under subclass 21.1) Subject matter wherein a means is encased within at least one joint element to perfect the joint; e.g., a heating element inside at least one joint element which is capable of causing fusion between the joint elements.
SEE OR SEARCH CLASS
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
273.9, 274.2, and 379.7 for application of electrical energy to fuse joints.
219, Electric Heating,
535, and 544 for heating devices which are used to fuse plastic elements.