Center post of a collapsible umbrella

Abstract

An improved center post of a collapsible umbrella comprises a retainer body on which two guiding holes are formed to respectively receive therein a first retaining pin biased by a spring and a second retaining pin biased by a spring. The retainer body is inserted into an inner tubular section of the center post to have the retaining pins which are spring-biased to respectively partially project out of two through holes formed on the inner tubular section. The inner tubular section is telescopically received in an outer tubular section of the center post so that when the inner tubular section is in a fully-extended position, the second retaining pin extends through one of the through holes of the inner tubular section to be engaged by a stop piece formed on the outer tubular section and the first retaining pin which extends through the associated one of the through holes penetrates through an opening formed on the outer tubular section to retain the inner tubular section in the fully-extended position in order to open the umbrella. When the umbrella is closed, the runner of the umbrella is slidably moved downward through the opening of the outer tubular section so as to force the first retaining pin inward to allow the inner tubular section to telescopically slide into the outer tubular section.

Dependencies are inferred from the claim text.