Patents by Inventor Shumin Chang

Shumin Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8800576
    Abstract: A guy structure for an automatic unfolding and folding umbrella is provided. The guy structure includes two or more guys: One guy is a lower nest guy, provided at least between a middle rod and a lower nest; the other is an unfolding guy, provided at least between the middle rod and a spreading component in the umbrella head. While unfolding the umbrella, an unfolding spring stretches and opens part of the middle rod pipe. The unfolding guy pulls and opens the rest section of middle rod pipe with the cooperation of the lower nest guy, and forms the complete unfolding status. While folding the umbrella, the folding spring makes the lower nest move downward under force of the folding spring. At this time, the unfolding spring does not generate tension on the middle rod pipe above it, thus the middle rod pipe above the unfolding spring can be collected through the lower nest guy or the unfolding guy.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: August 12, 2014
    Assignee: ShengJing Technology (ShenZhen) Co., Ltd.
    Inventor: Shumin Chang
  • Publication number: 20110214704
    Abstract: A guy structure for an automatic unfolding and folding umbrella is provided. The guy structure includes two or more guys: One guy is a lower nest guy, provided at least between a middle rod and a lower nest; the other is an unfolding guy, provided at least between the middle rod and a spreading component in the umbrella head. While unfolding the umbrella, an unfolding spring stretches and opens part of the middle rod pipe. The unfolding guy pulls and opens the rest section of middle rod pipe with the cooperation of the lower nest guy, and forms the complete unfolding status. While folding the umbrella, the folding spring makes the lower nest move downward under force of the folding spring. At this time, the unfolding spring does not generate tension on the middle rod pipe above it, thus the middle rod pipe above the unfolding spring can be collected through the lower nest guy or the unfolding guy.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 8, 2011
    Inventor: Shumin Chang