NL51407C - - Google Patents

Info

Publication number
NL51407C
NL51407C NL51407DA NL51407C NL 51407 C NL51407 C NL 51407C NL 51407D A NL51407D A NL 51407DA NL 51407 C NL51407 C NL 51407C
Authority
NL
Netherlands
Application number
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.)
Publication of NL51407C publication Critical patent/NL51407C/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/104—Treads
    • E04F11/112—Treads of metal or with an upper layer of metal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H57/00—Electrostrictive relays; Piezoelectric relays

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Thermally Actuated Switches (AREA)
NL51407D 1937-03-16 NL51407C (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US131160A US2166763A (en) 1937-03-16 1937-03-16 Piezoelectric apparatus and circuits

Publications (1)

Publication Number Publication Date
NL51407C true NL51407C (zh)

Family

ID=22448167

Family Applications (1)

Application Number Title Priority Date Filing Date
NL51407D NL51407C (zh) 1937-03-16

Country Status (6)

Country Link
US (1) US2166763A (zh)
BE (1) BE426805A (zh)
CH (1) CH208062A (zh)
FR (1) FR835337A (zh)
GB (1) GB501691A (zh)
NL (1) NL51407C (zh)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479173A (en) * 1944-07-26 1949-08-16 Gen Electric Circuit and starter for electric discharge devices
US2714642A (en) * 1952-07-10 1955-08-02 Bell Telephone Labor Inc High speed relay of electromechanical transducer material
US2916578A (en) * 1955-04-01 1959-12-08 Electric Machinery Mfg Co Electrostrictive capacitive relay having tension mounted actuator
US2967956A (en) * 1955-04-19 1961-01-10 Gulton Ind Inc Transducer
US3613589A (en) * 1955-12-23 1971-10-19 Us Army Bomb fuzing system
US3004176A (en) * 1959-03-30 1961-10-10 Bell Telephone Labor Inc Electromechanical transducers
US3109153A (en) * 1960-11-18 1963-10-29 Gen Dynamics Corp Adjustable piezoelectric wave filter having two resonance peaks
DE2063799A1 (de) * 1970-12-24 1972-07-06 Siemens Ag Elektrisches Zeitglied zum verzögerten Betätigen eines Schalters
US3777093A (en) * 1972-05-25 1973-12-04 R Sterns Electromechanical relay
JPS5161237U (zh) * 1974-11-07 1976-05-14
JPS6230773Y2 (zh) * 1980-12-19 1987-08-07
JPS59181585A (ja) * 1983-03-31 1984-10-16 Toshiba Corp 変位発生装置
JPS6046636U (ja) * 1983-09-05 1985-04-02 オムロン株式会社 多極リレ−
US4538087A (en) * 1984-06-11 1985-08-27 General Electric Company Alternating current driven piezoelectric latching relay and method of operation
US4553061A (en) * 1984-06-11 1985-11-12 General Electric Company Piezoelectric bimorph driven direct current latching relay
US4670682A (en) * 1984-12-21 1987-06-02 General Electric Company Piezoelectric ceramic switching devices and systems and method of making the same
US4669160A (en) * 1984-12-21 1987-06-02 General Electric Company Method for prepolarizing and centering a piezoelectric ceramic switching device
USRE33568E (en) * 1984-12-21 1991-04-09 General Electric Company Piezoelectric ceramic switching devices and systems and methods of making the same
USRE33691E (en) * 1984-12-21 1991-09-17 General Electric Company Piezoelectric ceramic switching devices and systems and method of making the same
USRE33618E (en) * 1984-12-21 1991-06-25 General Electric Company Method for initially polarizing and centering a piezoelectric ceramic switching device
USRE33587E (en) * 1984-12-21 1991-05-14 General Electric Company Method for (prepolarizing and centering) operating a piezoceramic power switching device
US4595855A (en) * 1984-12-21 1986-06-17 General Electric Company Synchronously operable electrical current switching apparatus
US4689517A (en) * 1984-12-21 1987-08-25 General Electric Company Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture
US4714847A (en) * 1984-12-21 1987-12-22 General Electric Company Advanced piezoeceramic power switching devices employing protective gastight enclosure and method of manufacture
US4620123A (en) * 1984-12-21 1986-10-28 General Electric Company Synchronously operable electrical current switching apparatus having multiple circuit switching capability and/or reduced contact resistance
US4678957A (en) * 1986-06-24 1987-07-07 General Electric Company Piezoelectric ceramic switching devices and systems and methods of making the same
US4626698A (en) * 1984-12-21 1986-12-02 General Electric Company Zero crossing synchronous AC switching circuits employing piezoceramic bender-type switching devices
US4620124A (en) * 1984-12-21 1986-10-28 General Electric Company Synchronously operable electrical current switching apparatus having increased contact separation in the open position and increased contact closing force in the closed position
USRE33577E (en) * 1984-12-21 1991-04-23 General Electric Company Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture
US4658154A (en) * 1985-12-20 1987-04-14 General Electric Company Piezoelectric relay switching circuit
US4697118A (en) * 1986-08-15 1987-09-29 General Electric Company Piezoelectric switch
US4967568A (en) * 1988-03-25 1990-11-06 General Electric Company Control system, method of operating an atmospheric cooling apparatus and atmospheric cooling apparatus
US5628411A (en) * 1994-12-01 1997-05-13 Sortex Limited Valve devices for use in sorting apparatus ejectors
US6497660B1 (en) * 2000-10-18 2002-12-24 Koninklijke Philips Electronics N.V. Ultrasound imaging device
US11464494B2 (en) 2019-07-19 2022-10-11 GE Precision Healthcare LLC Method and system to revert a depoling effect exhibited by an ultrasound transducer
US11435461B2 (en) 2019-07-19 2022-09-06 GE Precision Healthcare LLC Method and system to prevent depoling of ultrasound transducer

Also Published As

Publication number Publication date
GB501691A (en) 1939-03-03
US2166763A (en) 1939-07-18
CH208062A (de) 1939-12-31
FR835337A (fr) 1938-12-19
BE426805A (zh)

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