The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 1980
Filed:
Jul. 21, 1978
Alan D Vogel, Laurel, MD (US);
Fred E Snyder, Princeton, NJ (US);
Electro-Therm, Inc., Laurel, MD (US);
Abstract
A terminal block for simplified wiring of an electrical immersion heater assembly by providing for either single phase or three phase wire-up in opposite faces of the block. The terminal block has an electrically insulating body of disc-like configuration with three recesses defined in a first face of the block, each recess adapted to receive a lead connecting strap having a pair of apertures. Each of the three recesses has two bores extending into the body, the apertures of the straps alignable with the bores, for receiving leads of three separate heating elements through the apertures and into the bores for three phase wiring in the first face. The opposite face has an X-shaped recess which encompasses only four of the six bores for single phase wiring of four leads of the heating elements with a pair of curved straps. The body is of conical frustrum shape for better sealing characteristics and includes two additional bores adapted for receiving thermowells.