发明名称 |
Telescopic stick for a shortenable umbrella |
摘要 |
A telescopic stick for a shortenable umbrella having at least two telescopic parts guided in one another so as to be secure against relative twisting or rotation about their longitudinal axes; the two parts being provided with complementary polygonal profile or cross-section; the polygonal profile comprising at least 10 facets which embellish the umbrella stick and improve its jewel-like appearance while functioning to prevent relative rotation and preserving stability of operation as the stick is telescoped from an umbrella "open" to "closed" condition; at least one of the facets of the polygonal cross section having a concave or convex curvature in the circumferential direction.
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申请公布号 |
US4687012(A) |
申请公布日期 |
1987.08.18 |
申请号 |
US19860825436 |
申请日期 |
1986.02.03 |
申请人 |
KORTENBACH VERWALTUNG |
发明人 |
SCHULTES, TILMANN;SEIDEL, JOACHIM |
分类号 |
A45B9/02;A45B19/04;(IPC1-7):A45B19/04 |
主分类号 |
A45B9/02 |
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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