Bayonet joint backset adjustment for latch constructions
Patent 4372594 Issued on February 8, 1983. Estimated Expiration Date: 
September 19, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 19, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 294560 365152 1661454 1672076 2586066 2937897 InventorAssigneeApplicationNo. 06/188758 filed on 09/19/1980US Classes:292/1.5, ADJUSTABLE BACKSET292/337BOLT CASINGSExaminersPrimary: Moore, Richard E.Attorney, Agent or FirmInternational ClassesE05B 63/06 (20060101)E05B 63/00 (20060101) AbstractA bolt is conventionally reciprocal in a stationary casing with each being formed of longitudinally telescoped parts and with the parts of each being bayonet joint connected. Each bayonet joint connection is comprised of a projection of one part selectively movable in a pair of longitudinally spaced, transverse slots separated by a longitudinal slot in the other part, whereby each may be selectively longitudinally adjusted the same determined amount for increasing or decreasing the backset distance between the forward extremities of the casing and the latch operator transverse axis the same determined amount. The transverse cross sections of certain slidably reciprocal mating parts of the bolt and casing are formed generally mutually rectangular so that rotational movements of one during the backset adjustment will positively require the same rotational movements of the other. A spring-pressed friction member between the casing telescoped parts frictionally resists movement therebetween minimizing any danger of non-planned, accidental backset adjustment. | |
