FR2248745A5 - Variable speed drive mechanism - has spiral strip on gear drum which drives rollers fitted onto gear wheel - Google Patents

Variable speed drive mechanism - has spiral strip on gear drum which drives rollers fitted onto gear wheel

Info

Publication number
FR2248745A5
FR2248745A5 FR7338992A FR7338992A FR2248745A5 FR 2248745 A5 FR2248745 A5 FR 2248745A5 FR 7338992 A FR7338992 A FR 7338992A FR 7338992 A FR7338992 A FR 7338992A FR 2248745 A5 FR2248745 A5 FR 2248745A5
Authority
FR
France
Prior art keywords
drum
gear
drive mechanism
variable speed
speed drive
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
FR7338992A
Other languages
French (fr)
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.)
NUSSLE LIONEL
Original Assignee
NUSSLE LIONEL
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 NUSSLE LIONEL filed Critical NUSSLE LIONEL
Priority to FR7338992A priority Critical patent/FR2248745A5/en
Application granted granted Critical
Publication of FR2248745A5 publication Critical patent/FR2248745A5/en
Expired 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/10—Constructively simple tooth shapes, e.g. shaped as pins, as balls
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
    • F16H1/166—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel with members rotating around axes on the worm or worm-wheel
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/06—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion with worm and worm-wheel or gears essentially having helical or herring-bone teeth

Landscapes

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

Abstract

The motor drive shaft (2) is ffited with a drum (1) on which are varying angled helical strips (3 & 4) with a given angle for each speed required. The drum meshes with a gear wheel (5) fitted on the driven shaft, in the place of teeth it is fitted with rollers (7) which engage with the helical strips. The drum and gear transmit rotary motion to the driven shaft. To change gear the drum is moved axially relative to the gear bringing a differently angled helix to bear on the wheel fitted with rollers. Use of the rollers reduces friction in the apparatus to a minimum.
FR7338992A 1973-10-22 1973-10-22 Variable speed drive mechanism - has spiral strip on gear drum which drives rollers fitted onto gear wheel Expired FR2248745A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7338992A FR2248745A5 (en) 1973-10-22 1973-10-22 Variable speed drive mechanism - has spiral strip on gear drum which drives rollers fitted onto gear wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7338992A FR2248745A5 (en) 1973-10-22 1973-10-22 Variable speed drive mechanism - has spiral strip on gear drum which drives rollers fitted onto gear wheel

Publications (1)

Publication Number Publication Date
FR2248745A5 true FR2248745A5 (en) 1975-05-16

Family

ID=9127219

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7338992A Expired FR2248745A5 (en) 1973-10-22 1973-10-22 Variable speed drive mechanism - has spiral strip on gear drum which drives rollers fitted onto gear wheel

Country Status (1)

Country Link
FR (1) FR2248745A5 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516193A1 (en) * 1981-11-06 1983-05-13 Yvinec Raymond Mechanical speed change mechanism - has perpendicular shafts geared together by bevel gear and endless screw
EP0760065A1 (en) * 1994-06-13 1997-03-05 John E. Fowler Variable transmission
CN1067750C (en) * 1996-07-22 2001-06-27 栾益民 Screw drive mode and apparatus
CN102979861A (en) * 2012-11-21 2013-03-20 张其明 Multi-speed helical wheel drive transmission
WO2019029953A1 (en) * 2017-08-10 2019-02-14 Weiss Gmbh Rotary indexing table with power-optimized drive

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516193A1 (en) * 1981-11-06 1983-05-13 Yvinec Raymond Mechanical speed change mechanism - has perpendicular shafts geared together by bevel gear and endless screw
EP0760065A1 (en) * 1994-06-13 1997-03-05 John E. Fowler Variable transmission
EP0760065A4 (en) * 1994-06-13 1997-09-24 John E Fowler Variable transmission
CN1067750C (en) * 1996-07-22 2001-06-27 栾益民 Screw drive mode and apparatus
CN102979861A (en) * 2012-11-21 2013-03-20 张其明 Multi-speed helical wheel drive transmission
WO2019029953A1 (en) * 2017-08-10 2019-02-14 Weiss Gmbh Rotary indexing table with power-optimized drive
CN111050997A (en) * 2017-08-10 2020-04-21 维斯公司 Rotary indexing table with optimized drive power
US11117236B2 (en) 2017-08-10 2021-09-14 Weiss Gmbh Rotary indexing table with power-optimized drive
CN111050997B (en) * 2017-08-10 2022-08-09 维斯公司 Rotary indexing table with optimized drive power

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Legal Events

Date Code Title Description
ST Notification of lapse