ELECTRICAL APPARATUS

• US 3,638,055 A
• Filed: 06/29/1970
• Issued: 01/25/1972
• Est. Priority Date: 07/04/1969
• Status: Expired due to Term

• Current Assignee: Urs Zimmermann
• Original Assignee: Urs Zimmermann
• Inventors: Zimmermann, Urs
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): Skudy, R.
• Application Number:
  US05/050,817
• Time in Patent Office: 575 Days
• Field of Search: 310/43,45,89,88,254,259 29/596,598,605 264/272,202,203
• US Class Current: 310/43
• CPC Class Codes: H02K 44/085 with conducting liquids
• CPC Class Codes: H02K 5/128 using air-gap sleeves or air-gap discs
• CPC Class Codes: H02K 5/1285 of the submersible type
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine

Abstract

The housing for the winding is provided with at least two openings, one for the conductors for the winding and one for the pouring in of the hardenable mass. Each opening is sealed in sequence by first sealing the opening for the conductors by means of a glass plug and thereafter sealing the pour-in opening by means of a disk and plug or a seal ring and plug.

Claims

1. An electrical apparatus comprising an enclosed housing of corrosion-resistant material having at least two openings communicating the interior of said housing with the exterior thereof;

at least one stationary electric winding enclosed within said housing;

a hardened mass about said winding within said housing;

a plurality of conductors connected to said winding and passing through one of said openings;

a first gastight seal means surrounding said conductors and disposed in said one opening in gastight relation, said seal means including a gastight passageway connector secured to said housing about said one opening and a glass plug mounted in said connector and having said conductors passing therethrough; and

a second gastight seal means in gastight relation in the other of said openings.

2. An electrical apparatus as set forth in claim 1 wherein said housing includes a pair of supplementary openings and which further comprises a pair of measurement electrodes mounted in said housing, conductors connected to each electrode and passing through respective supplementary openings, and seal means disposed in gastight relation with each supplementary opening and conductor.

3. An electrical apparatus as set forth in claim 1 wherein said second gastight seal means includes a stub-nozzle secured to said housing, a disk of insulating material within said stub nozzle in contact with said mass and a plug of corrosion resistant material disposed in said stub nozzle in contact with said disk and in gastight relation to said stub-nozzle.

4. An electrical apparatus as set forth in claim 1 wherein said second gastight seal means includes a stub-nozzle having an internal screw thread secured to said housiNg, a plug threaded into said stub-nozzle, and a seal ring between said stub-nozzle and plug in gastight relation.

5. An electrical apparatus comprising an enclosed housing of corrosion-resistant material having at least two openings communicating the interior of said housing with the exterior thereof;

at least one stationary electric winding enclosed within said housing;

a hardened mass about said winding within said housing;

a plurality of conductors connected to said winding and passing through one of said openings;

a first gastight seal means surrounding said conductors and disposed in said one opening in gastight relation; and

a second gastight seal means in gastight relation in the other of said openings, said second gastight seal means including a stub-nozzle having an internal screw thread secured to said housing, a plug threaded into said stub-nozzle, and a seal ring between said stub-nozzle and plug in gastight relation.