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Kuhlman Electric Corporation

Kuhlman Corporatin

Eric S Richardson

Stephen D Smith

Phillip I Bisbee

James D Richerson

Philip I Bisbee

Insulation tubing (66) having adjustable dimensions is disclosed. The insulation tubing has an outer tubular wall that defines a central opening for receiving the core (4) and windings (8) of a partially assembled toroidal transformer. The wall is formed by preformed sections (44, 62) of electrical insulating material (10-20). The preformed sections have overlapping surfaces that are slidably positioned relative to one another. In this way, the extent of the surfaces that overlap can be changed to alter the size of the opening such that conductive windings (8) of various sizes and configurations can be accommodated.

Toroidal transformer insulation preforms

A distribution transformer (58) is assembled using a core (18) having a core surface (36) including an inner circumferential surface (40) defining an open eye region (38), an outer circumferential surface (42), and end surfaces (24, 26). Wedged-shaped core supports (20, 22), secured to the end surfaces of the core, are used to support the core during conductor winding operations and to mount the finished transformer within a transformer container (66). The core supports do not extend into the open eye region and allow virtually the entire inner circumferential surface to be covered by the electrical conductors (34, 56). The layers of electrical conductors are wound on top of one another so that each successive layer of electrical conductors conforms to the core surface and any previously wound conductors. Electrical insulation (54) is provided between each conductor layer.

Method for assembling a distribution transformer with conforming layers

Core support blockings (10, 12) used to support a toroidal transformer (2) within a transformer housing (4) includes a pie-shaped body (28) having a second end (32) secured to the transformer core (14) using an adhesive (41). The body has adhesive flow regions, typically countersunk holes (42) passing through mounting flanges (38, 40) extending laterally adjacent the second end of the body. Electrical windings (26) can be wound on first end of the mounting flanges so to help mechanically secure the body to the core. A mounting stud (46), or other mounting element, is used to secure the transformer to a support bracket (8). Together the support bracket and core support blockings are used to support the transformer within the transformer housing.

Core support blocking for toroidal transformers

A directional plotter for underwater searches, land searches, land orienting, or the like includes a pair of first and second relatively rotatable discs with the first disc including first, second and third concentric sets of compass degrees in radially adjacent relationship to each other. The second disc includes first, second and third sets of apertures associated with the first, second and third concentric sets of compass degrees. The two discs are relatively rotatable such that different search patterns can be established by rotating the discs relative to each other and viewing the required degrees for a particular search pattern through the associated apertures.

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Versailles, KY, United States of America

Eric S Richardson