JPS63314115A - Travel device in duct line - Google Patents

Travel device in duct line

Info

Publication number
JPS63314115A
JPS63314115A JP14923087A JP14923087A JPS63314115A JP S63314115 A JPS63314115 A JP S63314115A JP 14923087 A JP14923087 A JP 14923087A JP 14923087 A JP14923087 A JP 14923087A JP S63314115 A JPS63314115 A JP S63314115A
Authority
JP
Japan
Prior art keywords
mechanism
shape memory
memory alloy
resistors
run
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.)
Granted
Application number
JP14923087A
Other versions
JPH0736659B2 (en
Inventor
Shinichi Aoshima
Takenori Morimitsu
Takeshi Tsujimura
Takayuki Yamada
Original Assignee
Nippon Telegr & Teleph Corp <Ntt>
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 Nippon Telegr & Teleph Corp <Ntt> filed Critical Nippon Telegr & Teleph Corp <Ntt>
Priority to JP14923087A priority Critical patent/JPH0736659B2/en
Publication of JPS63314115A publication Critical patent/JPS63314115A/en
Publication of JPH0736659B2 publication Critical patent/JPH0736659B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Abstract

PURPOSE: To simplify a mechanism and miniaturize a device, by providing a travel device with a piezoelectric unit and a shape memory alloy.
CONSTITUTION: On the side surface of the piezoelectric bimorph 15 of two piezoelectric elements which are put together, two sets of resistors 14 confronted with each other are arranged. By applying AC voltage to the piezoelectric elements, flexible oscillation is generated on the bimorph 15. By this flexible oscillation, the resistors 14 are oscillated alternately on the left and right in the direction of a duct axis. Then, by applying a shape memory alloy wire 16 to this oscillation, a moving mechanism which can be run in both the left and right directions is considered. In other words, by conducting current to a shape memory alloy A to heat it and by transforming the resistors 14 to remove the tips from a duct line, the mechanism is run in the left direction. By repeating this action, the mechanism is continuously advanced. On the contrary, when current is conducted to a shape memory alloy B, then the mechanism is run in the counter direction by the same action. Accordingly, a wheel or a motor is not used, and so the mechanism is simplified and is easily manufactured and can be miniaturized.
COPYRIGHT: (C)1988,JPO&Japio
JP14923087A 1987-06-17 1987-06-17 Diameter conduit running device Expired - Fee Related JPH0736659B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14923087A JPH0736659B2 (en) 1987-06-17 1987-06-17 Diameter conduit running device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14923087A JPH0736659B2 (en) 1987-06-17 1987-06-17 Diameter conduit running device

Publications (2)

Publication Number Publication Date
JPS63314115A true JPS63314115A (en) 1988-12-22
JPH0736659B2 JPH0736659B2 (en) 1995-04-19

Family

ID=15470714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14923087A Expired - Fee Related JPH0736659B2 (en) 1987-06-17 1987-06-17 Diameter conduit running device

Country Status (1)

Country Link
JP (1) JPH0736659B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0361157A (en) * 1989-07-31 1991-03-15 Nippon Telegr & Teleph Corp <Ntt> Cylinder inside travelling device
JPH0466365A (en) * 1990-07-06 1992-03-02 Nippon Telegr & Teleph Corp <Ntt> Bidirectional movable type in-pipe travel device
US7445616B2 (en) * 2001-03-23 2008-11-04 Petrakis Dennis N Temperature responsive systems
US7476224B2 (en) 2003-03-17 2009-01-13 Petrakis Dennis N Temperature responsive systems
US7655001B2 (en) * 2001-03-23 2010-02-02 Petrakis Dennis N Temperature responsive systems

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS627315A (en) * 1985-06-29 1987-01-14 Nippon Telegraph & Telephone Internal pipe self-travelling apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS627315A (en) * 1985-06-29 1987-01-14 Nippon Telegraph & Telephone Internal pipe self-travelling apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0361157A (en) * 1989-07-31 1991-03-15 Nippon Telegr & Teleph Corp <Ntt> Cylinder inside travelling device
JPH0466365A (en) * 1990-07-06 1992-03-02 Nippon Telegr & Teleph Corp <Ntt> Bidirectional movable type in-pipe travel device
US7445616B2 (en) * 2001-03-23 2008-11-04 Petrakis Dennis N Temperature responsive systems
US7655001B2 (en) * 2001-03-23 2010-02-02 Petrakis Dennis N Temperature responsive systems
US8172458B2 (en) 2001-03-23 2012-05-08 Petrakis Dennis N Temperature responsive systems
US7476224B2 (en) 2003-03-17 2009-01-13 Petrakis Dennis N Temperature responsive systems

Also Published As

Publication number Publication date
JPH0736659B2 (en) 1995-04-19

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees