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:
Apr. 22, 1986
Filed:
Sep. 24, 1984
Peter H Burgher, Utica, MI (US);
John L Boomer, Howell, MI (US);
Marelco Power Systems, Howell, MI (US);
Abstract
A transformer comprising a core, a primary winding and a secondary winding in which one of the windings, preferably the winding with the least coils, is formed from a tubular member formed in a plurality of coils; in the preferred embodiment of a step down transformer, the secondary winding is formed from a tubular member. A connector block at each end of the secondary winding includes an appropriate fluid passage and means for connecting a fluid coupling to the block so that the inlet and outlet of the fluid circulation system can be secured to the tubular member forming the secondary winding. The loops of the primary coil are interdigitally arranged with the loops of the secondary coil so that the fluid in the secondary coil absorbs heat from both the primary and secondary windings. Each loop of the secondary includes a bow so that adjacent ends of each loop of the primary are sandwiched between the bows. Preferably, the core is made of laminated sections, each laminated section comprising a substantially E-shaped portion, the legs of each E-shaped portion abutting against the legs of the other E-shaped portion in each laminate layer. The primary and secondary coils are wrapped around the center leg of the core.