Pipe joints or couplings – With assembly means or feature – Guide and support
Patent
1988-09-30
1989-08-15
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Guide and support
246257, 246 8, 246354, F16L 3500
Patent
active
048568210
ABSTRACT:
Couplings for hoses and the like having externally threaded male components and internally threaded female components provided with tube inserts projecting from one component into slide fit engagement with the other component for aligning the threaded portions of the components as they are brought together for threaded engagement. To further facilitate alignment of the components, the internally threaded female component has an unthreaded smooth extension for sliding over the externally threaded male component to align the thread. The tubular extension member may be a separate auxiliary tube bottomed in the female coupling unit and held in position by a resilient washer, such as is conventionally used between the coupling units. Alternately the tubular extension may be a fixed part of one of the coupling components. The extension tube and the extended smooth leading end of the internally threaded female member can be used together or separately.
REFERENCES:
patent: 494918 (1893-04-01), Evans
patent: 599244 (1898-02-01), Decarie
patent: 3108825 (1963-10-01), MacDonald
patent: 4030778 (1977-06-01), Kaut
patent: 4079966 (1978-03-01), Berry et al.
patent: 4508367 (1985-04-01), Oreopoulos et al.
patent: 4775170 (1988-10-01), Usui et al.
2 sheets of photographic reproductions of conventional hose couplings.
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