GB1198467A - Improvements in or relating to Speed-Reduction Devices - Google Patents

Improvements in or relating to Speed-Reduction Devices

Info

Publication number
GB1198467A
GB1198467A GB4700467A GB4700467A GB1198467A GB 1198467 A GB1198467 A GB 1198467A GB 4700467 A GB4700467 A GB 4700467A GB 4700467 A GB4700467 A GB 4700467A GB 1198467 A GB1198467 A GB 1198467A
Authority
GB
United Kingdom
Prior art keywords
speed
cages
shaft
discs
balls
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.)
Expired
Application number
GB4700467A
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.)
Societe de Fabrication dInstruments de Mesure SFIM SA
Original Assignee
Societe de Fabrication dInstruments de Mesure SFIM 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 Societe de Fabrication dInstruments de Mesure SFIM SA filed Critical Societe de Fabrication dInstruments de Mesure SFIM SA
Publication of GB1198467A publication Critical patent/GB1198467A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/26—Driving record carriers by members acting directly or indirectly thereon
    • G11B15/28—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal
    • 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
    • F16H—GEARING
    • F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
    • F16H13/06—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion
    • F16H13/08—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion with balls or with rollers acting in a similar manner
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/44—Speed-changing arrangements; Reversing arrangements; Drive transfer means therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Friction Gearing (AREA)

Abstract

1,198,467. Variable-speed gearing. SOC DE FABRICA D'lNSTRUMENTS DE MESURE. 16 Oct., 1967 [17 Oct., 1966], No. 47004/67. Heading F2D. An epicyclic stepped friction speed-reduction gear for' driving the shaft A of a magnetic register capstan from a motor M comprises sets (e.g. 3) (Figs. 1 and 2, not shown) of planetary balls B 1 , B 2 &c. retained in P.T.F.E. cages C 1 , C 2 &c. freely mounted on the shaft A, each set of balls e.g. B 2 rolling between two plane spring- steel discs, one disc F 2 being fixed in a surrounding casing, and the other D 1 being rotationally fast with the preceding ball cage C 1 , the cages C 1 , C 2 , C 3 &c. being in series such that any one cage, starting at C 1 , may be locked to the shaft by a radial key R to effect a reduction ratio, which speed reduction ratios form a geometrical progression of inverse ratio 2, each ball cage unit running at half speed of the preceding unit. The drive from the motor M is through a roller G 1 or G 2 frictionally engaging a disc L carried by a member H having a face F o engaging the first set of planetary balls B 1 . The discs F 1 , D 1 &c. have a thickness of 4 to <SP>5</SP>/ 16 of a millimetre and the rotatable discs D 1 are set or glued on the P.T.F.E. cages which are separated by thrust roller bearings.
GB4700467A 1966-10-17 1967-10-16 Improvements in or relating to Speed-Reduction Devices Expired GB1198467A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR80316A FR1503916A (en) 1966-10-17 1966-10-17 Ball reduction gear, in particular for driving the capstan of a magnetic recorder from a motor

Publications (1)

Publication Number Publication Date
GB1198467A true GB1198467A (en) 1970-07-15

Family

ID=8619290

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4700467A Expired GB1198467A (en) 1966-10-17 1967-10-16 Improvements in or relating to Speed-Reduction Devices

Country Status (3)

Country Link
DE (1) DE1978403U (en)
FR (1) FR1503916A (en)
GB (1) GB1198467A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5514045A (en) * 1991-03-14 1996-05-07 Synkinetics, Inc. Speed converter with zero backlash
WO1996031713A1 (en) * 1995-04-04 1996-10-10 Frank John Thompson Hancock Differential
US5928101A (en) * 1995-04-04 1999-07-27 Hancock; Frank John Thompson Differential gear mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5514045A (en) * 1991-03-14 1996-05-07 Synkinetics, Inc. Speed converter with zero backlash
WO1996031713A1 (en) * 1995-04-04 1996-10-10 Frank John Thompson Hancock Differential
US5928101A (en) * 1995-04-04 1999-07-27 Hancock; Frank John Thompson Differential gear mechanism

Also Published As

Publication number Publication date
FR1503916A (en) 1967-12-01
DE1978403U (en) 1968-02-08

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees