| 摘要 |
<p>This disclosure relates to a large shelter standing umbrella including a tubular support having upper and lower end portions, a slide member in telescopic relationship with said tubular support, rack and pinion means for elevating and lowering the slide member relative to the tubular support, spokes pivotally connected at one end thereof to an upper end portion of the slide member and supporting struts pivotally connected at opposite ends to said spokes and said tubular support.</p> |
