GB892298A - - Google Patents
Info
- Publication number
- GB892298A GB892298A GB892298DA GB892298A GB 892298 A GB892298 A GB 892298A GB 892298D A GB892298D A GB 892298DA GB 892298 A GB892298 A GB 892298A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head
- band
- switch
- march
- operated
- 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.)
- Active
Links
Landscapes
- Preliminary Treatment Of Fibers (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Tents Or Canopies (AREA)
Abstract
892,298. Head-sets. FERRANTI METERS Ltd., DENIS, and ROBINSON, H. H. March 1960 [March 19, 1959], No. 9598/59. Class 40 (4). In a head-set having a head-band, a switch on the head-band is automatically operated when the head-set is placed on the head. The switch 4 is mounted on a flexible strip 3 which is attached to the head-band at 7. A comparatively rigid strip 6 has elongated holes at 9 and 7 so that its position is adjustable and on opening the head-band, switch plunger 5, which has " over travel facilities," is operated.
Publications (1)
Publication Number | Publication Date |
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GB892298A true GB892298A (en) |
Family
ID=1753106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB892298D Active GB892298A (en) |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB892298A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4229829A (en) * | 1978-03-16 | 1980-10-21 | Grunwald Peter H | Apparatus for wireless transmission of a teaching program in a classroom |
US5056161A (en) * | 1989-09-26 | 1991-10-15 | Bose Corporation | Headset having reduced width nested bands which are grasped by earcup supporting block |
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0
- GB GB892298D patent/GB892298A/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4229829A (en) * | 1978-03-16 | 1980-10-21 | Grunwald Peter H | Apparatus for wireless transmission of a teaching program in a classroom |
US5056161A (en) * | 1989-09-26 | 1991-10-15 | Bose Corporation | Headset having reduced width nested bands which are grasped by earcup supporting block |
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