Sprinkler having two-piece drive arm bridge

Details Sprinkler having two-piece drive arm bridge Sprinkler having two-piece drive arm bridge

1984-06-27

1986-12-02

Peters, Jr., Joseph F.

Fluid sprinkling, spraying, and diffusing

Processes

239230, 239233, 239264, B05B 308, B05B 314

Patent

active

046259139

ABSTRACT:
A sprinkler of the impact drive type is constructed substantially of plastic and includes a separate cap which is snap-fit over a pair of upwardly extending legs from a sprinkler body to form a bridge for an impact mechanism window. Provision of the separate bridge-forming cap facilitates automated assembly of the sprinkler, and also allows protective bearing-surface shields to be formed integrally with other sprinkler components and positioned about critical wear regions of a fulcrum pin for pivotally supporting an impact drive arm. When a plastic fulcrum pin is used, these bearing-surface shields protect the pin from abrasives, such as dirt, which can otherwise become lodged between the pin and the drive arm to cause accelerated pin wear.

REFERENCES:
patent: 2895199 (1959-07-01), Jones
patent: 3091487 (1963-05-01), Gallagher et al.
patent: 3191727 (1965-06-01), Schneltz et al.
patent: 3338285 (1967-08-01), Jaster
patent: 3734551 (1973-05-01), Hughes et al.
patent: 4033510 (1977-07-01), Jennison et al.
patent: 4173306 (1979-11-01), Ridgway

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