专利名称：Retractor mechanism for latch bolt发明人：ERICKSON; LARS申请号：US49013474申请日：19740719公开号：US3927905A公开日：19751223
摘要：A retractor mechanism for the latch bolt in a cylindrical door lock set whereinthe retractor comprises two parts, one part engaged with the latch bolt and a secondpart engageable by the knob spindles with means biasing said parts, at rest, to positionspermitting a certain amount of lost motion by said second part, in response to spindlemovement, before effective retraction of the latch bolt. The lost motion is calculated toinsure that tilting of the spindles, as in response to a blow, cannot retract the latch bolt,while rotation of the spindles retracts the bolt in a normal manner.
申请人：WALTER KIDDE & CO., INC.
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