GB1446309A - Electric resistance welding apparatus - Google Patents

Electric resistance welding apparatus

Info

Publication number
GB1446309A
GB1446309A GB4432072A GB4432072A GB1446309A GB 1446309 A GB1446309 A GB 1446309A GB 4432072 A GB4432072 A GB 4432072A GB 4432072 A GB4432072 A GB 4432072A GB 1446309 A GB1446309 A GB 1446309A
Authority
GB
United Kingdom
Prior art keywords
pulses
resistance welding
welding apparatus
amplitude
width
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
GB4432072A
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.)
SHEFFIELD MINORS C J, University of
Original Assignee
SHEFFIELD MINORS C J, University of
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 SHEFFIELD MINORS C J, University of filed Critical SHEFFIELD MINORS C J, University of
Priority to GB4432072A priority Critical patent/GB1446309A/en
Priority to DE19732347770 priority patent/DE2347770A1/en
Priority to US400537A priority patent/US3896286A/en
Publication of GB1446309A publication Critical patent/GB1446309A/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
    • A61C13/00—Dental prostheses; Making same
    • A61C13/20—Methods or devices for soldering, casting, moulding or melting

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)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

1446309 Welding by pressure SHEFFIELD UNIVERSITY OF C J MINORS and G F BAXTER 9 Aug 1973 [26 Sept 1972] 44320/72 Heading B3R [Also in Division H2] In a resistance welding apparatus, the power supply to the welding electrodes is in the form of pulses, the width and amplitude of which are variable. The pulses are derived by half wave or full wave rectification of a mains A.C. supply, each half wave being chopped. Two separate circuits under the control of a single gauged rotary switch enable control of the width and amplitude of the pulses. Alternatively the power may be controlled by pressing selected ones of a set of buttons. The apparatus is suitable for use in orthodontics.
GB4432072A 1972-09-23 1972-09-26 Electric resistance welding apparatus Expired GB1446309A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4432072A GB1446309A (en) 1972-09-26 1972-09-26 Electric resistance welding apparatus
DE19732347770 DE2347770A1 (en) 1972-09-23 1973-09-22 WELDING MACHINE FOR DENTAL PURPOSES
US400537A US3896286A (en) 1972-09-26 1973-09-25 Electric welding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4432072A GB1446309A (en) 1972-09-26 1972-09-26 Electric resistance welding apparatus

Publications (1)

Publication Number Publication Date
GB1446309A true GB1446309A (en) 1976-08-18

Family

ID=10432744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4432072A Expired GB1446309A (en) 1972-09-23 1972-09-26 Electric resistance welding apparatus

Country Status (1)

Country Link
GB (1) GB1446309A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee