Pipe joints or couplings – Irrigation type
Patent
1980-05-02
1982-07-27
Callaghan, Thomas F.
Pipe joints or couplings
Irrigation type
285178, 285234, F16L 2710
Patent
active
043414052
ABSTRACT:
Disclosed are flexible coupling devices for strings of elongate irrigation pipes, and especially suited for overland traveling sprinkler irrigation apparatuses. The pronounced flexure coupling devices comprise insert and casing members of novel structural and spatial inter-relationship which are held together with resinous elastic material that annularly surrounds the longitudinal reference-axis for the insert member, together with means to prevent abrading between the insert and casing members. Also disclosed are preferred chemical identifications for the annular elastic connector and fabrication processes for securing the connector to the structurally novel and specially spaced insert and casing members.
REFERENCES:
patent: 2896972 (1959-07-01), Zavertnik
patent: 3190680 (1965-06-01), Maly
patent: 3672572 (1972-06-01), Delfs
patent: 3704034 (1972-11-01), Shire et al.
patent: 3853337 (1974-12-01), Herbert et al.
patent: 4068864 (1978-01-01), Herbert et al.
patent: 4076284 (1978-02-01), Herbert et al.
patent: 4103939 (1978-08-01), Herbert et al.
patent: 4198078 (1980-04-01), Herbert
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