EP0038595A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Removable brush holder for dynamoelectric machine
Assignee: Honeywell International Inc
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Filing: 1981-04-10
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Granted: —
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Expires: 2001-04-10
Abstract
Abstract A dynamoelectric machine (1), having brushes which contact an armature contact surface such as commutator (6) or slip rings, is provided with a plurality of independent, individually removable brush holders (10, 100). Each brush holder is provided with either a removable pin (102) to allow brushes to contact the armature contact surface after the brush holder (10, 100) has been installed, or with a clamping bolt (40), retaining brushes (8) in a predetermined position for insertion of the brush holder, and removal of the brush holder, the brush holder being tilted or cocked to avoid contact between it and the armature contact surface. Bolting the brush holder (10, 100) into place makes electrical contact between the dynamoelectric machine and the brush holder by means of an insulated, conductive threaded aperture (34) on the exterior surface of the machine, a mounting bolt (24) inserted into this aperture (34) urging a conductive portion (20) of the brush holder into electrical contact. The brush holder (10,100) may be further provided with a rotatable spring support (212) for varying the pressure exerted on the brushes, and a measuring scale (216) for correlating the length of partially worn brush with an angular position of the spring support, to facilitate adjustment of brush pressure as brushes wear. Angular adjustment of the position of the spring support may also .serve to lift certain types of brushes into a retracted position. The disclosed brush pressure adjustment structure is also usable with non-removable brush holders.
Inventors
- 👤 Jeffrey T. Major
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 21:11
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/42; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H01R39/38; H01R39/381; H01R39/58; H02K2205/00; H02K2205/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
220 words
In a dynamoelectric machine having an armature contact surface, and an end frame, the combination comprising: a plurality of separate removable brush holders adapted to be axially removable from the exterior of said machine, said end frame of said machine having apertures therethrough adapted to receive each said brush holder therein; said end frame including means for receiving attachment means for attaching said brush holder to said end frame, said means for receiving including means for establishing electrical contact between said dynamoelectric machine and said removable brush holder; each said brush holder including means adapted to contact said means for receiving, to establish an electrical connection between said brush holder and said dynamoelectric machine; each said removable brush holder including manually operable means for retaining a brush in a predetermined position therein and releasing said brush after said brush holder is firmly attached to said end frame; whereby each said brush holder maybe tilted to avoid contact with said armature contact surface while being passed through said apertnre, electrical contact to said brush holder is established by attaching said brush holder to said end frame with said attachment means, and said brush may be retained in a position removed from said armature contact surface until all movement of said brush holder with respect to said armature contact surface has ceased.
Claim 2
Dependent Claim
220 words
In a dynamoelectric machine having an armature contact surface, and an end frame, the combination comprising: a plurality of separate removable brush holders adapted to be axially removable from the exterior of said machine, said end frame of said machine having apertures therethrough adapted to receive each said brush holder therein; said end frame including means for receiving attachment means for attaching said brush holder to said end frame, said means for receiving including means for establishing electrical contact between said dynamoelectric machine and said removable brush holder; each said brush holder including means adapted to contact said means for receiving, to establish an electrical connection between said brush holder and said dynamoelectric machine; each said removable brush holder including manually operable means for retaining a brush in a predetermined position therein and releasing said brush after said brush holder is firmly attached to said end frame; whereby each said brush holder maybe tilted to avoid contact with said armature contact surface while being passed through said apertnre, electrical contact to said brush holder is established by attaching said brush holder to said end frame with said attachment means, and said brush may be retained in a position removed from said armature contact surface until all movement of said brush holder with respect to said armature contact surface has ceased.
Claim 3
Dependent Claim
107 words
In a dynamoelectric machine according to claim 1, wherein; said brush holder defines at least one aperture therethrough adapted to removably retain a rod member therethrough; said rod member being inserted through said brush holder so that said brush bears. against said rod member and is prevented from protruding from said brush holder; said rod member being removable from said brush holder to allow said brush to protrude from said brush holder; whereby said rod member may be withdrawn from said aperture in said brush holder after said brush holder is firmly attached to said end frame to allow said brush to contact said armature contact surface.
Claim 4
Dependent Claim
61 words
In a dynamoelectric machine according to claim 2, whereiny; said brush holder includes a mounting portion adapted to be retained to said end frame and a brush box portion adapted to retain at least one brush therein; said mounting portion being made of an insulating material, said brush box portion being made of conductive material and fastened to said mounting portion.
Claim 5
Dependent Claim
111 words
In a dynamoelectric machine according to claim 3, wherein; said means for receiving including means for establishing electrical contact is a bolt, said bolt having an axial threaded bore formed therein adapted to receive said attachment means; said bolt having a first threaded portion and a second threaded portion of lesser diameter than said first'portion, and separated therefrom by a shoulder; . said bolt being adapted to receive a first nut on said first threaded portion, to retain said bolt to said end frame; said bolt being further adapted to receive a second nut.on said second threaded portion to retain an internal connecting wire of said dynamoelectric. machine to said bolt.
Claim 6
Dependent Claim
233 words
A removable brush holder for use in a dynamoelectric machine including an end frame provided with unitary means for retaining said brush holder and for establishing electrical contact with said brush holder, said unitary means including a bolt member insulated from said end frame and connected to internal wiring of said machine and adapted to 'receive fastening means to retain said brush holder to said end frame'and establish contact between said internal wiring and said brush holder, comprising; a face portion adapted to be disposed on the exterior of a first aperture formed in said frame; a body portion integral with said face portion adapted to be passed through said first aperture; a brush box portion attached to said face portion and said body portion adapted to slidably receive brushes and including spring means to urge said brushes toward a first position; a bus bar member electrically connected to said brushes and having a tab portion adapted to be pressed between said face portion and said unitary means for retaining said brush holder-and for establishing electrical contact with said brush holder when said face portion is contacting said end frame around said first aperture; and an aperture formed through said face portion said body portion and said brush box portion adapted to receive a manually withdrawable rod member for .preventing said brushes from protruding from said brush box portion towards said first position..
Claim 7
Dependent Claim
233 words
A removable brush holder for use in a dynamoelectric machine including an end frame provided with unitary means for retaining said brush holder and for establishing electrical contact with said brush holder, said unitary means including a bolt member insulated from said end frame and connected to internal wiring of said machine and adapted to 'receive fastening means to retain said brush holder to said end frame'and establish contact between said internal wiring and said brush holder, comprising; a face portion adapted to be disposed on the exterior of a first aperture formed in said frame; a body portion integral with said face portion adapted to be passed through said first aperture; a brush box portion attached to said face portion and said body portion adapted to slidably receive brushes and including spring means to urge said brushes toward a first position; a bus bar member electrically connected to said brushes and having a tab portion adapted to be pressed between said face portion and said unitary means for retaining said brush holder-and for establishing electrical contact with said brush holder when said face portion is contacting said end frame around said first aperture; and an aperture formed through said face portion said body portion and said brush box portion adapted to receive a manually withdrawable rod member for .preventing said brushes from protruding from said brush box portion towards said first position..
Claim 8
Dependent Claim
161 words
; A unitary means for use with a dynamo- electric machine for retaining a removable brush holder and for establishing electrical contact between said removable brush holder and internal wiring of said machine, mounted through and electrically insulated from an end frame of said machine, comprising: a bolt member having a head portion- adapted to contact an electrical conductor of said removable brush holder; said bolt member having an aperture formed therein; said aperture lying on the axis of said bolt member and formed through said head portion; said aperture being adapted to receive a means for fastening said brush holder to said end frame; .said bolt member having a first threaded portion adapted to receive a first nut for retaining said bolt member to said end frame; said bolt members further including a second threaded portion adapted to receive a second nut and an internal wire means of said machine for electrically connecting-said internal wire means to said bolt member.
Claim 9
Dependent Claim
161 words
; A unitary means for use with a dynamo- electric machine for retaining a removable brush holder and for establishing electrical contact between said removable brush holder and internal wiring of said machine, mounted through and electrically insulated from an end frame of said machine, comprising: a bolt member having a head portion- adapted to contact an electrical conductor of said removable brush holder; said bolt member having an aperture formed therein; said aperture lying on the axis of said bolt member and formed through said head portion; said aperture being adapted to receive a means for fastening said brush holder to said end frame; .said bolt member having a first threaded portion adapted to receive a first nut for retaining said bolt member to said end frame; said bolt members further including a second threaded portion adapted to receive a second nut and an internal wire means of said machine for electrically connecting-said internal wire means to said bolt member.
Claim 10
Dependent Claim
166 words
In a dynamoelectric machine having an armature contact surface, and an end frame, the combination comprising: a plurality of separate removable brush holders adapted to be axially removable from the exterior of said machine, said end frame of said machine having apertures therethrough adapted to receive each said brush holder therein; said end frame including means for receiving attachment means for attaching said brush holder to said end frame; means for making electrical contact to each said removable brush holder; each said removable brush holder including manually operable means for retaining a brush in a predetermined position therein and releasing said brush after said brush holder is firmly attached to said end frame; whereby each said brush holder may be tilted to avoid contact with said armature contact surface while being passed through said aperture, and said brush may be retained in a position removed from said armature contact surface until all movement of said brush holder with respect to said armature contact surface has ceased.
Claim 11
Dependent Claim
166 words
In a dynamoelectric machine having an armature contact surface, and an end frame, the combination comprising: a plurality of separate removable brush holders adapted to be axially removable from the exterior of said machine, said end frame of said machine having apertures therethrough adapted to receive each said brush holder therein; said end frame including means for receiving attachment means for attaching said brush holder to said end frame; means for making electrical contact to each said removable brush holder; each said removable brush holder including manually operable means for retaining a brush in a predetermined position therein and releasing said brush after said brush holder is firmly attached to said end frame; whereby each said brush holder may be tilted to avoid contact with said armature contact surface while being passed through said aperture, and said brush may be retained in a position removed from said armature contact surface until all movement of said brush holder with respect to said armature contact surface has ceased.
References Cited (Backward Citations)
No citation records indexed.
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