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Expandable ring having segment with spring-engaged crossed arms

  • US 3,901,045 A
  • Filed: 03/25/1974
  • Issued: 08/26/1975
  • Est. Priority Date: 08/31/1973
  • Status: Expired due to Term
First Claim
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1. An expandable finger ring comprising:

  • a. a major, generally U-shaped ring segment having, a bottom portion, and a pair of upwardly extending legs as continuations of the respective opposed sides of said bottom portion and each of said legs having distal end zones in confronting relation, b. a minor ring segment between the legs and movable between a normal inwardly retracted position and an expanded position on movement respectively toward and away from said bottom portion and between said legs, c. pivotal linkage means pivotally connecting said minor ring segment and said major ring segment, d. spring means fixed relative to said side legs and extending into engagement with said pivotal linkage means, and normally urging said minor ring segments in said retracted position, said pivotal linkage being yieldable on movement of said minor ring segment away from said bottom portion to flex said spring means to store energy therein when said minor ring segment is out of said normal position and moved toward said expanded position, e. said pivotal linkage means comprising a pair of crossed arms, each of said arms having an upper end and a lower end, pivot means connecting each of The lower ends to said minor ring segment adjacent one of said legs and inwardly of the distal end zones of said one of said legs and pivotally connecting the upper ends of the distal end zone of said major ring segment adjacent the respective opposite distal end zones of the other of said legs, each said arm including an upwardly and outwardly extending portion relative to said minor ring segment and each of said arms including a portion in engagement with said spring means.

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