BRUSH BLOCK RETRACTOR AND ALIGNMENT DEVICE

• US 3,601,747 A
• Filed: 09/18/1969
• Issued: 08/24/1971
• Est. Priority Date: 09/18/1969
• Status: Expired due to Term

• Current Assignee: Kearfott Guidance and Navigation Corporation
• Original Assignee: Georg Olsen, Ralph J. Prall
• Inventors: Prall, Ralph J., Olsen, Georg
• Primary Examiner(s): Moore, Richard E.
• Application Number:
  US04/859,060
• Time in Patent Office: 705 Days
• Field of Search: 339/5,8 310/240,242
• US Class Current: 439/26
• CPC Class Codes: H01R 39/00 Rotary current collectors, distributors or interrupters

Abstract

A device for retracting and aligning the brush members of a brush block assembly with respect to a slipring assembly, wherein a cylindrical member provided between the brush lock assembly and the slipring assembly has a plurality of slots for receiving the brush members, and an arcuate groove registering with each slot. The cylindrical member is rotatable with respect to the brush block assembly so that each brush member can be transferred into said groove to uniformly retract the brush members.

Claims

1. A device for retracting and aligning the brush members of a brush block assembly with respect to a slipring assembly, said device comprising a cylindrical member disposed between said brush block assembly and said slipring assembly, said cylindrical member having a plurality of slots formed therethrough for receiving said brush members, and a groove registering with each slot, said cylindrical member being rotatable with respect to said brush block assembly to a position whereby each brush member is transferred to said groove to uniformly retract said brush members from said slipring assembly, wherein the leading end of each groove is tapered so as to permit a gradual retraction of said brush members.

2. A device for retracting and aligning the brush members of a brush block assembly with respect to a slipring assembly, said device comprising a cylindrical member disposed between said brush block assembly and said slipring assembly, said cylindrical member having a plurality of slots formed therethrough for receiving said brush members and a groove registering with each slot, said cylindrical member being rotatable with respect to said brush block assembly to a position whereby each brush member is transferred into said groove to uniformly retract said brush members from said slipring assembly, wherein there are two rows of brush members mounted with respect to said brush block assembly, and wherein said slots in said cylindrical member are alternately formed in a diametrically opposite position along said cylindrical member.

3. A device for retracting and aligning the brush members of a brush block assembly with respect to a slipring assembly, said device comprising a cylindrical member disposed between said brush block assembly and said slipring assembly, said cylindrical member having a plurality of slots formed therethrough for receiving said brush members, and a groove registering with each slot, said cylindrical member being rotatable with respect to said brush block assembly to a position whereby each brush member is transferred into said groove to uniformly retract said brush members from said slipring assembly, wherein said slots and said grooves are arcuate, and wherein said grooves are formed in the outer surface of said cylindrical member.

4. Apparatus for transferring electrical current comprising a brush block assembly;

a plurality of brush members mounted with respect to said brush block assembly;

a slipring assembly adapted to rotate with respect to said brush block assembly in engagement with said brush members, said brush block assembly and said slipring assembly adapted to be connected within a plurality of electric circuits; and

a cylindrical member disposed between said brush block assembly and said slipring assembly, said cylindrical member having a plurality of slots formed therethrough for receiving said brush members, and a groove registering with each slot, said cylindrical member being rotatable wiTh respect to said brush block assembly to a position whereby each member is transferred into said groove to uniformly retract said brush members from said slipring assembly, wherein the leading end of each groove is tapered so as to permit a gradual retraction of said brush members.

5. Apparatus for transferring electrical current comprising a brush block assembly;

a plurality of brush members mounted with respect to said brush block assembly;

a slipring assembly adapted to rotate with respect to said brush block assembly in engagement with said brush members, said brush block assembly and said slipring assembly adapted to be connected within a plurality of electrical circuits; and

a cylindrical member disposed between said brush block assembly and said slipring assembly, said cylindrical member having a plurality of slots formed therethrough for receiving said brush members, and a groove registering with each slot, said cylindrical member being rotatable with respect to said brush block assembly to a position whereby each brush member is transferred into said groove to uniformly retract said brush members from said slipring assembly, wherein there are two rows of brush members mounted with respect to said brush block assembly, and wherein said slots in said cylindrical member are alternately formed in a diametrically opposite position along said cylindrical member.

6. Apparatus for transferring electrical current comprising a brush block assembly;

a plurality of brush members mounted with respect to said brush block assembly;

a slipring assembly adapted to rotate with respect to said brush block assembly in engagement with said brush members, said brush block assembly and said slipring assembly adapted to be connected within a plurality of electrical circuits; and

a cylindrical member disposed between said brush block assembly and said slipring assembly said cylindrical member having a plurality of slots formed therethrough for receiving said brush members, and a groove registering with each slot, said cylindrical member being rotatable with respect to said brush block assembly to a position whereby each brush member is transferred into said groove to uniformly retract said brush members from said slipring assembly, wherein said slots and said grooves are arcuate, and wherein said grooves are formed in the outer surface of said cylindrical member.