发明名称 |
METHOD OF AND MEANS FOR PRESERVING TENNIS BALLS AND THE LIKE |
摘要 |
<p>A gas pressurized ball is packaged under pressure by first compressing the ball about its girth and then compressing it about its full surface in the smaller spherical cavity of a mold section. A device for compressing the ball includes a collar member of smaller diameter than the ball and a pair of spherically faced cavitied mold members which are assembled with the collar to form a spherical closure chamber. The mold members may include lips which enter the collar opening or may, with the collar face, form the closure chamber. The collar and a spherically faced cavitied mold member, in one form, are integrally formed and a ball injection plunger registers with a bore in the mold member. Another device includes three mutually hinged members each having a cavity so that when the members are swung to a closed condition the cavities form a spherical chamber smaller than the ball. Another form of the device includes a cylindrical receptacle closed by an elastomeric cap provided with an inflation valve and locking collar to permit pressurizing of the receptacle.</p> |
申请公布号 |
CA1036988(A) |
申请公布日期 |
1978.08.22 |
申请号 |
CA19740196102 |
申请日期 |
1974.03.27 |
申请人 |
FEINBERG, ROBERT S.;SELICK, DAVID A. |
发明人 |
FEINBERG, ROBERT S.;SELICK, DAVID A. |
分类号 |
B65D81/20;A63B39/02;B65B25/00;B65D85/00;B65D85/58;(IPC1-7):65D81/20;65D11/00 |
主分类号 |
B65D81/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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