GB1583295A - Cases for throwing darts - Google Patents

Cases for throwing darts Download PDF

Info

Publication number
GB1583295A
GB1583295A GB14806/78A GB1480678A GB1583295A GB 1583295 A GB1583295 A GB 1583295A GB 14806/78 A GB14806/78 A GB 14806/78A GB 1480678 A GB1480678 A GB 1480678A GB 1583295 A GB1583295 A GB 1583295A
Authority
GB
United Kingdom
Prior art keywords
darts
dart
case
protective member
pocket
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
GB14806/78A
Other languages
English (en)
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.)
Harris J F Harris C J
Original Assignee
Harris J F Harris C J
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 Harris J F Harris C J filed Critical Harris J F Harris C J
Priority to GB14806/78A priority Critical patent/GB1583295A/en
Priority to DE19782813445 priority patent/DE2813445A1/de
Priority to US05/892,116 priority patent/US4204178A/en
Priority to AU34763/78A priority patent/AU3476378A/en
Priority to SE7803749A priority patent/SE7803749L/xx
Priority to ES468556A priority patent/ES468556A1/es
Priority to FR7810086A priority patent/FR2386936A1/fr
Priority to BE186594A priority patent/BE865722A/xx
Priority to JP4041778A priority patent/JPS53126243A/ja
Priority to ZA00785281A priority patent/ZA785281B/xx
Publication of GB1583295A publication Critical patent/GB1583295A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/644—Coupled resonator filters having two acoustic tracks
    • H03H9/6443—Coupled resonator filters having two acoustic tracks being acoustically coupled
    • H03H9/6446—Coupled resonator filters having two acoustic tracks being acoustically coupled by floating multistrip couplers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02236—Details of surface skimming bulk wave devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02669—Edge reflection structures, i.e. resonating structures without metallic reflectors, e.g. Bleustein-Gulyaev-Shimizu [BGS], shear horizontal [SH], shear transverse [ST], Love waves devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02779—Continuous surface reflective arrays
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/6436—Coupled resonator filters having one acoustic track only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/644—Coupled resonator filters having two acoustic tracks
    • H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
    • H03H9/6459—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02645—Waffle-iron or dot arrays

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Details Of Garments (AREA)
  • Transducers For Ultrasonic Waves (AREA)
GB14806/78A 1977-04-07 1978-02-20 Cases for throwing darts Expired GB1583295A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB14806/78A GB1583295A (en) 1977-04-07 1978-02-20 Cases for throwing darts
DE19782813445 DE2813445A1 (de) 1977-04-07 1978-03-29 Akustische wellenanordnungen
US05/892,116 US4204178A (en) 1977-04-07 1978-03-31 Acoustic wave devices
AU34763/78A AU3476378A (en) 1977-04-07 1978-04-04 Acoustic wave device
SE7803749A SE7803749L (sv) 1977-04-07 1978-04-04 Akustisk vaganordning
ES468556A ES468556A1 (es) 1977-04-07 1978-04-05 Un dispositivo de onda acustica perfeccionado.
FR7810086A FR2386936A1 (fr) 1977-04-07 1978-04-05 Dispositif mettant a profit des ondes acoustiques
BE186594A BE865722A (US06653308-20031125-C00197.png) 1977-04-07 1978-04-05
JP4041778A JPS53126243A (en) 1977-04-07 1978-04-07 Elastic wave device
ZA00785281A ZA785281B (en) 1978-02-20 1978-09-18 Improvements in cases for throwing darts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1480677 1977-04-07
GB14806/78A GB1583295A (en) 1977-04-07 1978-02-20 Cases for throwing darts

Publications (1)

Publication Number Publication Date
GB1583295A true GB1583295A (en) 1981-01-21

Family

ID=26250814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14806/78A Expired GB1583295A (en) 1977-04-07 1978-02-20 Cases for throwing darts

Country Status (9)

Country Link
US (1) US4204178A (US06653308-20031125-C00197.png)
JP (1) JPS53126243A (US06653308-20031125-C00197.png)
AU (1) AU3476378A (US06653308-20031125-C00197.png)
BE (1) BE865722A (US06653308-20031125-C00197.png)
DE (1) DE2813445A1 (US06653308-20031125-C00197.png)
ES (1) ES468556A1 (US06653308-20031125-C00197.png)
FR (1) FR2386936A1 (US06653308-20031125-C00197.png)
GB (1) GB1583295A (US06653308-20031125-C00197.png)
SE (1) SE7803749L (US06653308-20031125-C00197.png)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290033A (en) * 1979-06-04 1981-09-15 Trw Inc. Shallow bulk acoustic wave devices employing energy trapping
JPS5925525B2 (ja) * 1979-08-31 1984-06-19 株式会社東芝 弾性表面波共振子
JP2547980B2 (ja) * 1984-01-09 1996-10-30 日本電波工業 株式会社 超音波トランスジユ−サとその製造方法
US4599532A (en) * 1984-07-05 1986-07-08 Clarion Co., Ltd. Surface acoustic wave device with anti-reflection electrode structure
GB2193060B (en) * 1986-07-16 1991-04-03 Japan Radio Co Ltd Surface elastic wave filter
US5091051A (en) * 1986-12-22 1992-02-25 Raytheon Company Saw device method
US5010270A (en) * 1986-12-22 1991-04-23 Raytheon Company Saw device
US4965479A (en) * 1987-01-12 1990-10-23 Hewlett-Packard Company Surface transverse wave resonator
FR2619225B1 (fr) * 1987-08-07 1990-05-04 Tafani Christian Systeme de detection, de reconnaissance et d'identification a distance.
EP0362478B1 (de) * 1988-09-14 1995-05-24 Siemens Aktiengesellschaft Akustische Verzögerungsleitung
US4933588A (en) * 1988-12-23 1990-06-12 Raytheon Company Higher order transverse mode suppression in surface acoustic wave resonators
JPH0969751A (ja) * 1995-08-30 1997-03-11 Murata Mfg Co Ltd 弾性表面波フィルタ
US5986523A (en) * 1997-08-29 1999-11-16 Murata Manufacturing Co., Ltd. Edge reflection type longitudinally coupled surface acoustic wave filter
JP3289674B2 (ja) * 1998-05-21 2002-06-10 株式会社村田製作所 表面波フィルタ装置、共用器、通信機装置
JP2000165184A (ja) * 1998-11-20 2000-06-16 Fujitsu Ltd 弾性表面波素子
JP3298538B2 (ja) * 1999-02-16 2002-07-02 株式会社村田製作所 端面反射縦結合型ｓａｗ共振子フィルタ
JP3341699B2 (ja) 1999-02-18 2002-11-05 株式会社村田製作所 端面反射型表面波装置
US6429569B1 (en) 1999-07-22 2002-08-06 Murata Manufacturing Co., Ltd. Surface acoustic wave device and communication apparatus
JP2001308675A (ja) * 2000-04-26 2001-11-02 Murata Mfg Co Ltd 表面波フィルタ及び共用器、通信機装置
DE10117772C2 (de) * 2001-04-09 2003-04-03 Advalytix Ag Mischvorrichtung und Mischverfahren für die Durchmischung kleiner Flüssigkeitsmengen
JP2010088109A (ja) * 2008-09-05 2010-04-15 Panasonic Corp 弾性波素子と、これを用いた電子機器
US7939987B1 (en) * 2008-10-23 2011-05-10 Triquint Semiconductor, Inc. Acoustic wave device employing reflective elements for confining elastic energy
FR2966307B1 (fr) * 2010-10-15 2013-07-12 Commissariat Energie Atomique Filtre a ondes acoustiques comprenant un guidage acoustique integre

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760204A (en) * 1972-03-01 1973-09-18 Motorola Inc Acoustic surface wave resonator
GB1451326A (en) * 1973-02-16 1976-09-29 Nat Res Dev Acoustic wave devices
US4056793A (en) * 1974-03-15 1977-11-01 Texas Instruments Incorporated Acoustic waveguide resonator
US3886504A (en) * 1974-05-20 1975-05-27 Texas Instruments Inc Acoustic surface wave resonator devices

Also Published As

Publication number Publication date
AU3476378A (en) 1979-10-11
JPS53126243A (en) 1978-11-04
US4204178A (en) 1980-05-20
DE2813445A1 (de) 1978-10-12
FR2386936A1 (fr) 1978-11-03
BE865722A (US06653308-20031125-C00197.png) 1978-10-05
ES468556A1 (es) 1978-11-16
SE7803749L (sv) 1978-10-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee