CA1007730A - Proximity differential control - Google Patents

Proximity differential control

Info

Publication number
CA1007730A
CA1007730A CA192,050A CA192050A CA1007730A CA 1007730 A CA1007730 A CA 1007730A CA 192050 A CA192050 A CA 192050A CA 1007730 A CA1007730 A CA 1007730A
Authority
CA
Canada
Prior art keywords
differential control
proximity
proximity differential
control
differential
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
CA192,050A
Inventor
Alvin H. Wilkinson
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.)
Auto Crane Co
Original Assignee
Auto Crane Co
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 Auto Crane Co filed Critical Auto Crane Co
Application granted granted Critical
Publication of CA1007730A publication Critical patent/CA1007730A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/50—Applications of limit circuits or of limit-switch arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00—Safety gear
    • B66C15/06—Arrangements or use of warning devices
    • B66C15/065—Arrangements or use of warning devices electrical

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Jib Cranes (AREA)
CA192,050A 1973-11-02 1974-02-08 Proximity differential control Expired CA1007730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00412163A US3833898A (en) 1973-11-02 1973-11-02 Proximity differential control

Publications (1)

Publication Number Publication Date
CA1007730A true CA1007730A (en) 1977-03-29

Family

ID=23631857

Family Applications (1)

Application Number Title Priority Date Filing Date
CA192,050A Expired CA1007730A (en) 1973-11-02 1974-02-08 Proximity differential control

Country Status (2)

Country Link
US (1) US3833898A (en)
CA (1) CA1007730A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064997A (en) * 1976-03-29 1977-12-27 Eugene Richard Holland Crane swing safety control
US4649375A (en) * 1985-10-31 1987-03-10 Fmc Corporation Apparatus for detecting power lines
US6501198B2 (en) 2000-02-17 2002-12-31 Jlg Industries, Inc. Control lever for heavy machinery with near-proximity sensing
US6853307B2 (en) * 2002-03-14 2005-02-08 Irvin H. Nickerson High voltage proximity warning system and method
US7081812B2 (en) * 2002-09-24 2006-07-25 Charles M. Hastings, Sr. Audible warning system for vehicles outfitted with extensible structures
FR2845826B1 (en) * 2002-10-10 2006-08-25 Potain Sa RADIOCOMMANDE ANTENNA SUPPORT ARM FOR LIFTING APPARATUS
US20070018841A1 (en) * 2004-11-22 2007-01-25 Nickerson Irvin H High voltage proximity warning system utilizing wireless sensors and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125751A (en) * 1964-03-17 R- winters
US2615969A (en) * 1949-04-15 1952-10-28 Esther V Albrecht Electrical power line warning device for vehicles with extended booms
US2730245A (en) * 1952-04-15 1956-01-10 James E Auld Automatic control system for hoisting apparatus
US2789282A (en) * 1954-05-17 1957-04-16 Vincent Mfg Corp Automatic approach alarm
US3168729A (en) * 1962-11-30 1965-02-02 Crane Products Mfg Company Inc Proximity alarm
US3296494A (en) * 1963-06-24 1967-01-03 Jr Andrew Stenger Voltage responsive devices and methods of voltage detection

Also Published As

Publication number Publication date
US3833898A (en) 1974-09-03

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