FR2284799A1 - Electromagnetic powder coupling or brake - has non-magnetic support for internal rotor to prevent eddy currents in bearings - Google Patents

Electromagnetic powder coupling or brake - has non-magnetic support for internal rotor to prevent eddy currents in bearings

Info

Publication number
FR2284799A1
FR2284799A1 FR7431458A FR7431458A FR2284799A1 FR 2284799 A1 FR2284799 A1 FR 2284799A1 FR 7431458 A FR7431458 A FR 7431458A FR 7431458 A FR7431458 A FR 7431458A FR 2284799 A1 FR2284799 A1 FR 2284799A1
Authority
FR
France
Prior art keywords
bearings
brake
internal rotor
eddy currents
magnetic support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7431458A
Other languages
French (fr)
Other versions
FR2284799B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ruggieri SA
Original Assignee
Ruggieri SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ruggieri SA filed Critical Ruggieri SA
Priority to FR7431458A priority Critical patent/FR2284799A1/en
Publication of FR2284799A1 publication Critical patent/FR2284799A1/en
Application granted granted Critical
Publication of FR2284799B3 publication Critical patent/FR2284799B3/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
    • F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
    • F16D2037/002—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by a single substantially axial gap in which the fluid or medium consisting of small particles is arranged

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Braking Arrangements (AREA)

Abstract

The coupling or brake has a toroidal coil embedded in the external rotor in the conventional way. The internal rotor is supported by a non-magnetic sleeve (10) which protects the bearings (9) from eddy currentss. The finish of this is superior to that of materials normally used. The bearings have an internal bore of the largest possible size. The bearings are mounted in non-magnetic cheeks, and can be removed externally. Their outer rings are held by a plastic joint. Removing the bearings does not involve stripping of other parts. As an alternative a non-magnetic shaft may be employed.
FR7431458A 1974-09-13 1974-09-13 Electromagnetic powder coupling or brake - has non-magnetic support for internal rotor to prevent eddy currents in bearings Granted FR2284799A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7431458A FR2284799A1 (en) 1974-09-13 1974-09-13 Electromagnetic powder coupling or brake - has non-magnetic support for internal rotor to prevent eddy currents in bearings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7431458A FR2284799A1 (en) 1974-09-13 1974-09-13 Electromagnetic powder coupling or brake - has non-magnetic support for internal rotor to prevent eddy currents in bearings

Publications (2)

Publication Number Publication Date
FR2284799A1 true FR2284799A1 (en) 1976-04-09
FR2284799B3 FR2284799B3 (en) 1977-07-01

Family

ID=9143183

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7431458A Granted FR2284799A1 (en) 1974-09-13 1974-09-13 Electromagnetic powder coupling or brake - has non-magnetic support for internal rotor to prevent eddy currents in bearings

Country Status (1)

Country Link
FR (1) FR2284799A1 (en)

Also Published As

Publication number Publication date
FR2284799B3 (en) 1977-07-01

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse