Hotstick applicator for fault indicator cores

• US 3,984,798 A
• Filed: 11/21/1974
• Issued: 10/05/1976
• Est. Priority Date: 11/21/1974
• Status: Expired due to Term

• Current Assignee: FL Industries Incorporated
• Original Assignee: International Telephone & Telegraph Corp. (ITT, Inc.)
• Inventors: Bussen, Michael Robert
• Primary Examiner(s): Kozma, Thomas J.
• Application Number:
  US05/525,942
• Time in Patent Office: 684 Days
• Field of Search: 29/203 R, 29/203 H, 29/203 HM, 244/106, 244/85, 244/99 R, 324/127, 324/129, 336/176, 81/72, 81/53.1, 24/248 SA, 24/248 SB, 24/132 SB, 339/14 L, 339/108 R, 339/109, 339/243, 339/263 L, 339/265 L, 339/266 G, 339/266 L
• US Class Current: 336/176
• CPC Class Codes: G01R 1/22 Tong testers acting as secondary windings of current transformers
• CPC Class Codes: H01F 38/30 Constructions
• CPC Class Codes: Y10T 29/532 Conductor
• CPC Class Codes: Y10T 29/53222 Means comprising hand-manipulatable implement

Abstract

The disclosed device is adapted for placing a ferrite core onto an energized power distribution system cable and includes a pair of generally U-shaped core holders. Each holder receives a core half which is loosely retained within the concave portion of the holder by an elastomeric "O" ring. The holders are pivotally mounted at one of their end portions to opposite ends of a saddle member wherein the free ends of the holders, and therefore the core halves, are translatable into either abutting or open relationship. The length of the saddle member is selected so as to provide a stop which limits the maximum opening of the core holders. An eye bolt threadedly engages the saddle member along a threaded transverse bore therein wherein the threaded end of the bolt engages overlapping portions of the pivot ends of the core holders. An elastomeric sleeve surrounds the saddle member and the overlapping pivot ends of the core holders and urges the holders toward their abutting position. Flanges extend from the sleeve toward the free ends of the core holders to orient a pick-up coil within the device. The eye of the eye bolt projects from the sleeve for engagement with the hook end of a hotstick. The eye bolt is provided with a left-hand thread so that clockwise rotation of the bolt closes the core holders, and therefore the core halves, around the cable.

Claims

1. An applicator including a separable device and having means for applying said device to a power distribution system cable with a hotstick, said applicator comprising:

a saddle member;

first and second device holders, each holder receiving a portion of said device and said holders being respectively pivotally mounted at one end thereof to said saddle member at opposite ends thereof wherein the free ends of said holders are translatable toward and away from each other and each holder having a projection in the direction of the opposite pivotal mounting;

spring means for urging said holders toward each other;

rotatable means extending through said saddle member and having a first end engaging said projections of said holders and having a second end engagable with said hotstick for translating said holders in response to rotation of said rotatable means;

wherein;

said holders each comprise a generally U-shaped member having a generally flat cross section, and

said saddle member comprises a generally U-shaped channel member receptive of said holders and providing a pivot point means at each end thereof for pivotally mounting said holders;

wherein said device is a magnetic core having first and second separable sections respectively received by said first and second holders; and

,

wherein said spring means includes an elastomeric sleeve surrounding said channel member and said projections received therein, thereby to urge said holders and said core sections towards each other.

2. The applicator according to claim 1, wherein said rotatable means comprises a bolt, and means for threadedly engaging said bolt with said elastomeric sleeve.

3. The applicator according to claim 1, wherein said sleeve includes at least one flange portion projecting toward said core sections for retainingly orientating a pick-up coil disposed about a portion of said core.

4. The applicator according to claim 3, wherein said holders each include a stepped portion thereby to form a generally rectangular opening in said applicator when said holders are moved toward each other;

and, wherein said core sections are provided with slot portions wherein said core sections are slidably received in said rectangular opening.

5. The applicator according to claim 4, wherein each of said holders include a pivot point surface projection along a portion of said rectangular opening to provide a pivotal mounting for said slotted core sections thereby to accommodate self-aligning movement of said core sections.

6. The applicator according to claim 5, wherein each of said holders include a notch portion along the outer perimeter thereof and wherein said core sections are respectively retained within said holders by an O ring received in each of said notches.

7. The applicator according to claim 6, wherein said projections of said holders are offset in opposite directions with respect to the plane of said holders and extend in overlapping relationship.

8. The applicator according to claim 7, wherein the length of said channel member is selected to provide a stop to limit the maximum translation of said holders away from each other.

9. The applicator according to claim 8, wherein said pivot point means comprise tubular spring pins which are force fit into corresponding bores in said channel member.