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Paraguera Del Noroeste S A (panosa)
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Paraguera Del Noroeste S A (panosa)
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Application filed by Paraguera Del Noroeste S A (panosa)filedCriticalParaguera Del Noroeste S A (panosa)
Priority to ES1975214048UpriorityCriticalpatent/ES214048Y/en
Publication of ES214048UpublicationCriticalpatent/ES214048U/en
Application grantedgrantedCritical
Publication of ES214048YpublicationCriticalpatent/ES214048Y/en
Improved umbrella stand, which is essentially characterized because it is constituted from a base, preferably cruciform and provided with self-orienting wheels, whose base has emerging from its center, perpendicularly upwards, a tubular seat, receiver of the lower end of a shaft, being the stem made up of three independent and pluggable sectors, which can be interchanged with each other, and which, at least in the case of two of them, have joined together their external surface rings capable of acting as support points of as many supports for umbrellas, that are constituted from a central bushing, purposely sized to be threaded through the shaft, from which emerge a series of equidistant radial arms, with their ends folded upwards and protected by ferrules, which are joined by circular, concentric crossbars to the central bushing. (Machine-translation by Google Translate, not legally binding)
Kinematic method used to determine the stability of a toroidal shell, the edges of which are clamped with regard to radial and axial displacements to approximate a momentless stressed state