WO2012149125A3 - Wrap spring device - Google Patents

Wrap spring device Download PDF

Info

Publication number
WO2012149125A3
WO2012149125A3 PCT/US2012/035151 US2012035151W WO2012149125A3 WO 2012149125 A3 WO2012149125 A3 WO 2012149125A3 US 2012035151 W US2012035151 W US 2012035151W WO 2012149125 A3 WO2012149125 A3 WO 2012149125A3
Authority
WO
WIPO (PCT)
Prior art keywords
spring
axially extending
spring device
tang
disposed
Prior art date
Application number
PCT/US2012/035151
Other languages
French (fr)
Other versions
WO2012149125A2 (en
Inventor
Michael F. Leone
Original Assignee
Thomson Industries, Inc.
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 Thomson Industries, Inc. filed Critical Thomson Industries, Inc.
Publication of WO2012149125A2 publication Critical patent/WO2012149125A2/en
Publication of WO2012149125A3 publication Critical patent/WO2012149125A3/en

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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/06—Wound springs with turns lying in cylindrical surfaces
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • F16F1/123—Attachments or mountings characterised by the ends of the spring being specially adapted, e.g. to form an eye for engagement with a radial insert

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Mechanical Operated Clutches (AREA)
  • Braking Arrangements (AREA)

Abstract

A wrap spring device (40) including an improved interface between an output hub (60) and a load carrying helical spring (66). At least an end portion of the spring is disposed in a circumferential groove (70) formed in the output hub, and an end of the spring is formed into an axially extending tang (62) which is disposed in an axially extending tang slot (74) of the hub. In a relaxed state, the inside diameter of the end portion of the spring is smaller than an outside diameter of the circumferential groove in order to provide an interference fit there between. The tang slot has a profile configured to cooperatively engage an entire opposed surface of the axially extending tang.
PCT/US2012/035151 2011-04-29 2012-04-26 Wrap spring device WO2012149125A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161480741P 2011-04-29 2011-04-29
US61/480,741 2011-04-29

Publications (2)

Publication Number Publication Date
WO2012149125A2 WO2012149125A2 (en) 2012-11-01
WO2012149125A3 true WO2012149125A3 (en) 2014-05-08

Family

ID=47073062

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/035151 WO2012149125A2 (en) 2011-04-29 2012-04-26 Wrap spring device

Country Status (1)

Country Link
WO (1) WO2012149125A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE33514E (en) * 1984-01-06 1991-01-08 American Assembly Tools, Inc. Adjustable torque limiting assembly
US5090530A (en) * 1990-12-28 1992-02-25 Dana Corporation Wrap spring clutch/brake unit with spring differential adjustment
US20030213455A1 (en) * 2002-05-20 2003-11-20 Isao Tohyama Recoil starter
US20090097940A1 (en) * 2007-10-15 2009-04-16 Flow-Rite Controls, Ltd. Locking threaded connection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE33514E (en) * 1984-01-06 1991-01-08 American Assembly Tools, Inc. Adjustable torque limiting assembly
US5090530A (en) * 1990-12-28 1992-02-25 Dana Corporation Wrap spring clutch/brake unit with spring differential adjustment
US20030213455A1 (en) * 2002-05-20 2003-11-20 Isao Tohyama Recoil starter
US20090097940A1 (en) * 2007-10-15 2009-04-16 Flow-Rite Controls, Ltd. Locking threaded connection

Also Published As

Publication number Publication date
WO2012149125A2 (en) 2012-11-01

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