JPH0279977U - - Google Patents
Info
- Publication number
- JPH0279977U JPH0279977U JP15851688U JP15851688U JPH0279977U JP H0279977 U JPH0279977 U JP H0279977U JP 15851688 U JP15851688 U JP 15851688U JP 15851688 U JP15851688 U JP 15851688U JP H0279977 U JPH0279977 U JP H0279977U
- Authority
- JP
- Japan
- Prior art keywords
- sphere
- axis
- outer circumferential
- formed integrally
- regular intervals
- 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.)
- Pending
Links
Landscapes
- Bearings For Parts Moving Linearly (AREA)
Description
図面は本考案の実施例で、第１図は平面図、第
２図は側面図、第３図はＡ―Ａ線に沿う断面図、
第４図はＢ―Ｂ線に沿う断面図である。 １……球体、２……軸、３……突条。
２図は側面図、第３図はＡ―Ａ線に沿う断面図、
第４図はＢ―Ｂ線に沿う断面図である。 １……球体、２……軸、３……突条。
Claims (1)
- 球体の表面中心部を軸とし、該軸より所要間隔
を設けた外周面に球体と一体に形成された適宜長
さを有する縦向き突条多数を、定間隔を設け円輪
状に列設したことを特徴とする投球練習用ボール
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15851688U JPH0279977U (ja) | 1988-12-07 | 1988-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15851688U JPH0279977U (ja) | 1988-12-07 | 1988-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0279977U true JPH0279977U (ja) | 1990-06-20 |
Family
ID=31438917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15851688U Pending JPH0279977U (ja) | 1988-12-07 | 1988-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0279977U (ja) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60156480A (ja) * | 1983-12-02 | 1985-08-16 | ペ−タ−・グラハム・リツチフイ−ルド | 投球用ボ−ル |
-
1988
- 1988-12-07 JP JP15851688U patent/JPH0279977U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60156480A (ja) * | 1983-12-02 | 1985-08-16 | ペ−タ−・グラハム・リツチフイ−ルド | 投球用ボ−ル |