JPS648245U - - Google Patents
Info
- Publication number
- JPS648245U JPS648245U JP10201887U JP10201887U JPS648245U JP S648245 U JPS648245 U JP S648245U JP 10201887 U JP10201887 U JP 10201887U JP 10201887 U JP10201887 U JP 10201887U JP S648245 U JPS648245 U JP S648245U
- Authority
- JP
- Japan
- Prior art keywords
- annular grooves
- rotary drum
- rotary
- rotary head
- circumferential surface
- 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
Links
- 230000002093 peripheral effect Effects 0.000 claims description 3
Description
図面はこの考案の一実施例を示したものであつ
て、第１図は要部の断面図、第２図は全体の斜視
図である。
なお図面に用いられている符号において、１…
…回転ドラム、１ａ……回転ドラムの外周面、１
ｂ……回転ドラムの内周面、６……磁気テープ、
８……環状溝、９……貫通孔、１２……空気膜、
である。
The drawings show one embodiment of this invention, with FIG. 1 being a cross-sectional view of the main parts, and FIG. 2 being a perspective view of the whole. In addition, in the symbols used in the drawings, 1...
...Rotating drum, 1a...Outer peripheral surface of rotating drum, 1
b... Inner peripheral surface of rotating drum, 6... Magnetic tape,
8... Annular groove, 9... Through hole, 12... Air film,
It is.
Claims (1)
回転ヘツド装置において、 上記回転ドラムの外周面に複数の環状溝を設け
、これらの環状溝の一部又は全部に連通されて上
記回転ドラムの外周面と内周面の間を貫通する複
数の貫通孔を設けたことを特徴とする回転ヘツド
装置。[Claims for Utility Model Registration] A rotary head device having a rotary drum to which a rotary head is attached, wherein a plurality of annular grooves are provided on the outer peripheral surface of the rotary drum, and a plurality of annular grooves are communicated with some or all of these annular grooves. A rotary head device characterized in that a plurality of through holes are provided that penetrate between the outer circumferential surface and the inner circumferential surface of the rotary drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10201887U JPH0454581Y2 (en) | 1987-07-02 | 1987-07-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10201887U JPH0454581Y2 (en) | 1987-07-02 | 1987-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS648245U true JPS648245U (en) | 1989-01-18 |
| JPH0454581Y2 JPH0454581Y2 (en) | 1992-12-22 |
Family
ID=31331540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10201887U Expired JPH0454581Y2 (en) | 1987-07-02 | 1987-07-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454581Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7761996B2 (en) | 1997-09-08 | 2010-07-27 | Trent West | Methods of making tungsten carbide-based annular jewelry rings |
-
1987
- 1987-07-02 JP JP10201887U patent/JPH0454581Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7761996B2 (en) | 1997-09-08 | 2010-07-27 | Trent West | Methods of making tungsten carbide-based annular jewelry rings |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0454581Y2 (en) | 1992-12-22 |
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