FR2228362A7 - Hand tool e.g. screw driver - has planetary reduction gearing between handle and blade augmenting hand torque - Google Patents

Hand tool e.g. screw driver - has planetary reduction gearing between handle and blade augmenting hand torque

Info

Publication number
FR2228362A7
FR2228362A7 FR7312996A FR7312996A FR2228362A7 FR 2228362 A7 FR2228362 A7 FR 2228362A7 FR 7312996 A FR7312996 A FR 7312996A FR 7312996 A FR7312996 A FR 7312996A FR 2228362 A7 FR2228362 A7 FR 2228362A7
Authority
FR
France
Prior art keywords
handle
hand
augmenting
blade
reduction gearing
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
FR7312996A
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.)
GOURNELLE MAURICE FR
Original Assignee
GOURNELLE MAURICE FR
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 GOURNELLE MAURICE FR filed Critical GOURNELLE MAURICE FR
Priority to FR7312996A priority Critical patent/FR2228362A7/en
Application granted granted Critical
Publication of FR2228362A7 publication Critical patent/FR2228362A7/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B17/00—Hand-driven gear-operated wrenches or screwdrivers
    • B25B17/02—Hand-driven gear-operated wrenches or screwdrivers providing for torque amplification

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

The reduction gear cage cheek plate 8 houses a jawed mandrel 16 for bit 26 location and some planets have elastic end floats assisting unjamming. A shaft stub projects from a handle to form a gear wheel 3 about which enmeshing planet gears 4 rotate, these latter being spindled to and meshing externally with a shallow cylinder cage 6, 7, 8: the outer end of which 8 receives blades 26 etc, and which is externally gripped by the free hand to provide an anti-coupling effect.
FR7312996A 1973-04-11 1973-04-11 Hand tool e.g. screw driver - has planetary reduction gearing between handle and blade augmenting hand torque Expired FR2228362A7 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7312996A FR2228362A7 (en) 1973-04-11 1973-04-11 Hand tool e.g. screw driver - has planetary reduction gearing between handle and blade augmenting hand torque

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7312996A FR2228362A7 (en) 1973-04-11 1973-04-11 Hand tool e.g. screw driver - has planetary reduction gearing between handle and blade augmenting hand torque

Publications (1)

Publication Number Publication Date
FR2228362A7 true FR2228362A7 (en) 1974-11-29

Family

ID=9117755

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7312996A Expired FR2228362A7 (en) 1973-04-11 1973-04-11 Hand tool e.g. screw driver - has planetary reduction gearing between handle and blade augmenting hand torque

Country Status (1)

Country Link
FR (1) FR2228362A7 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2478993A1 (en) * 2012-04-02 2014-07-23 Fº JAVIER PORRAS VILA Screwdriver-cone with nodes (Machine-translation by Google Translate, not legally binding)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2478993A1 (en) * 2012-04-02 2014-07-23 Fº JAVIER PORRAS VILA Screwdriver-cone with nodes (Machine-translation by Google Translate, not legally binding)

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Legal Events

Date Code Title Description
ST Notification of lapse