GB671485A - Improvements in or relating to chucks - Google Patents

Improvements in or relating to chucks

Info

Publication number
GB671485A
GB671485A GB2417849A GB2417849A GB671485A GB 671485 A GB671485 A GB 671485A GB 2417849 A GB2417849 A GB 2417849A GB 2417849 A GB2417849 A GB 2417849A GB 671485 A GB671485 A GB 671485A
Authority
GB
United Kingdom
Prior art keywords
rollers
chuck
cam surfaces
sept
nose
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
GB2417849A
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.)
EDWARD TERENCE LONG
Original Assignee
EDWARD TERENCE LONG
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 EDWARD TERENCE LONG filed Critical EDWARD TERENCE LONG
Priority to GB2417849A priority Critical patent/GB671485A/en
Publication of GB671485A publication Critical patent/GB671485A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders
    • A61C1/142—Operating tool blocking means
    • A61C1/144—Operating tool blocking means constricting the operating tool, e.g. chuck
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/223—Jaws in the form of cylindrical elements

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

671,485. Chucks. LONG, E. T. Sept. 20, 1950 [Sept. 20, 1949], No. 24178/49. Class 83 (iii). A chuck, particularly for small tools such as dental drills or engraving tools, comprises a hollow body 1 secured to a mandrel 3 and having several internal cam surfaces 4, a corresponding number of rollers 5 engaging the cam surfaces, and resilient means 7 directly engaging the rollers and tending to urge them towards the axis of the chuck so that a drill 11 is lightly gripped by the rollers before being fully gripped by the action of the cam surfaces when the chuck is rotating. The resilient means may comprise a coiled spring 7 having one or more convolutions and it may engage a reduced portion in the middle of each roller or a spigot at one end of each roller; spigots at both ends of the rollers and two springs may also be employed. The cam surfaces may be ratchet-shaped or, for transmitting torque in both directions, the internal surface of the body may be of sinuous configuration. For guiding the drill into the chuck, the nose 9 of the body has a bore 10 and the ends of the rollers are slightly radiused. The chuck is housed in a sleeve which may be either rotary or stationary; in the latter case, the sleeve may be attached to the outer casing of a flexible shaft. The Provisional Specification describes also holes in the nose of the body in which the rollers are guided.
GB2417849A 1949-09-20 1949-09-20 Improvements in or relating to chucks Expired GB671485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2417849A GB671485A (en) 1949-09-20 1949-09-20 Improvements in or relating to chucks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2417849A GB671485A (en) 1949-09-20 1949-09-20 Improvements in or relating to chucks

Publications (1)

Publication Number Publication Date
GB671485A true GB671485A (en) 1952-05-07

Family

ID=10207643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2417849A Expired GB671485A (en) 1949-09-20 1949-09-20 Improvements in or relating to chucks

Country Status (1)

Country Link
GB (1) GB671485A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214844A (en) * 1988-02-16 1989-09-13 Roy Edward Child Pin chuck
EP2343152A3 (en) * 2010-01-08 2012-12-26 Techtronic Power Tools Technology Limited Collet and rotary tool including a collet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214844A (en) * 1988-02-16 1989-09-13 Roy Edward Child Pin chuck
EP2343152A3 (en) * 2010-01-08 2012-12-26 Techtronic Power Tools Technology Limited Collet and rotary tool including a collet

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