GB588727A - Improvements in or relating to braking devices for electric motors - Google Patents

Improvements in or relating to braking devices for electric motors

Info

Publication number
GB588727A
GB588727A GB2365044A GB2365044A GB588727A GB 588727 A GB588727 A GB 588727A GB 2365044 A GB2365044 A GB 2365044A GB 2365044 A GB2365044 A GB 2365044A GB 588727 A GB588727 A GB 588727A
Authority
GB
United Kingdom
Prior art keywords
block
sleeve
rod
nut
enlargement
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
GB2365044A
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.)
BERNARD MAX HAYMAN
Automotive Products PLC
Original Assignee
BERNARD MAX HAYMAN
Automotive Products PLC
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 BERNARD MAX HAYMAN, Automotive Products PLC filed Critical BERNARD MAX HAYMAN
Priority to GB2365044A priority Critical patent/GB588727A/en
Publication of GB588727A publication Critical patent/GB588727A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
    • H02P3/10—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor by reversal of supply connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmission Devices (AREA)
  • Braking Arrangements (AREA)

Abstract

588,727. Screw and nut gearing. AUTOMOTIVE PRODUCTS CO., Ltd., and HAYMAN, B. M. Nov. 27, 1944, No. 23650. [Class 80 (iii)] [Also in Groups XXIX and XXXVII] An electric motor reciprocates a member (e.g. a piston valve) through screw and nut mechanism and actuates switches so that at the end of travel the motor is stopped by a reverse torque and then disconnected from the supply. The motor spindle 11 (Fig. 1) rotates sleeve-nut 12 supported by a ball-thrust bearing 13 in insulating block 14, thereby reciprocating screwed rod 23. The latter has an enlargement 19 slidable in a bore 17 in block 14 and carrying on a transverse pin 20 rollers which run in slots in block 14 to prevent rotation of rod 23. The enlargement 19 also engages one or other of the plungers 57 and 58 projecting into bore 17, thereby actuating limit switches mounted on the block. Direction-responsive switches on the block are actuated according to the direction of rotation, by arm 45 which is rotatably free on sleeve 12 but gripped by spring-pressed washers 48 and 49. The rod 23 reciprocates the member through sleeve 25 and balls 35 pressed resiliently into groove 36 by encircling spring 37; this allows sleeve 25 to be reciprocated independently by sufficient force to force balls 35 out of groove 36. Specification 572,775, [Group XXIX], is referred to.
GB2365044A 1944-11-27 1944-11-27 Improvements in or relating to braking devices for electric motors Expired GB588727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2365044A GB588727A (en) 1944-11-27 1944-11-27 Improvements in or relating to braking devices for electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2365044A GB588727A (en) 1944-11-27 1944-11-27 Improvements in or relating to braking devices for electric motors

Publications (1)

Publication Number Publication Date
GB588727A true GB588727A (en) 1947-06-02

Family

ID=10199070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2365044A Expired GB588727A (en) 1944-11-27 1944-11-27 Improvements in or relating to braking devices for electric motors

Country Status (1)

Country Link
GB (1) GB588727A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114719799A (en) * 2022-03-04 2022-07-08 武汉海微科技有限公司 Soft material boundary detection method and device and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114719799A (en) * 2022-03-04 2022-07-08 武汉海微科技有限公司 Soft material boundary detection method and device and storage medium
CN114719799B (en) * 2022-03-04 2024-04-26 武汉海微科技股份有限公司 Soft material boundary detection method, device and storage medium

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