30-07-2015 дата публикации
Номер: US20150208772A1
Принадлежит:
An umbrella shank is provided with an FRP inner tube (); an FRP outer tube () for receipt of the inner tube (); a spring biased moving mechanism () including an upper member () having a longitudinal groove (), and a lower member () having a longitudinal groove () aligned with the groove () wherein the lower member () is inserted into the inner tube (), the upper member () is on the top of the inner tube (), and the upper member () is in the outer tube (); a fixing mechanism () in an upper portion of the outer tube (); and a linking mechanism () in the outer tube () and including a rod () having a top secured to the fixing mechanism () and a bottom secured to a bottom of the lower member (), and partially disposed in the grooves (). 1. An umbrella shank comprising:{'b': 10', '11, 'an inner tube () formed of fibre-reinforced plastic (FRP) and including an interior ();'}{'b': 20', '21', '10', '10', '20, 'an outer tube () formed of FRP and including an interior () having a polygonal section and an inner diameter greater than an outer diameter of the inner tube () so that the inner tube () is configured to insert into the outer tube ();'}{'b': 30', '31', '32', '31', '31', '21', '31', '311', '32', '321', '311', '321', '32', '11', '10', '31', '10', '311', '10', '31', '20, 'a moving mechanism () including an upper member () and a lower member () wherein the upper member () has a polygonal section, the upper member () is complementary to the interior () in shape, the upper member () includes a longitudinal groove () on an outer surface, the lower member () includes a longitudinal groove () on an outer surface, the longitudinal grooves (, ) are aligned, the lower member () is inserted into the interior () of the inner tube (), the upper member () is disposed on the top of the inner tube (), a bottom of the longitudinal groove () is put on a top of the inner tube (), and the upper member () is disposed in the outer tube ();'}{'b': 40', '20, 'a fixing mechanism () having a ...
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