Ball drive sprinkler
First Claim
Patent Images
1. A sprinkler, which comprises:
- (a) a container including a container bore and a water inlet for admitting water to said container bore;
(b) a motor reciprocably received in said container bore and movable between retracted and extended positions, said motor including;
(1) a stator having a stator bore with upper and lower ends and a stator base receiving water from said container bore; and
(2) a rotor rotatably received within said stator bore, said rotor including upper and lower ends, a vertical rotational axis and a turret having an inlet orifice communicating water with said stator bore and a nozzle orifice;
(c) hydraulic drive means adapted for rotating said rotor;
(d) a stabilizer ring associated with said stator bore lower end and rotatably receiving said rotor;
(e) a stator water inlet associated with said stabilizer ring and adapted to communicate water between said stator base and said stator bore; and
(f) bumper means associated with said rotor base and being adapted to engage said stabilizer ring.
1 Assignment
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Accused Products
Abstract
A rotary, pop-up sprinkler is provided which includes an in-ground container. A motor is reciprocably mounted in the container and includes a stator, a plate assembly mounted on the stator and a rotor rotatably received in the stator. The rotor includes a turret with a nozzle orifice. Hydraulic pressures on the rotor are balanced whereby anti-rotational drag is substantially reduced. A speed regulator is provided for maintaining a relatively constant rotational speed when the sprinkler is subjected to variances in hydraulic pressure.
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Citations
35 Claims
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1. A sprinkler, which comprises:
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(a) a container including a container bore and a water inlet for admitting water to said container bore; (b) a motor reciprocably received in said container bore and movable between retracted and extended positions, said motor including; (1) a stator having a stator bore with upper and lower ends and a stator base receiving water from said container bore; and (2) a rotor rotatably received within said stator bore, said rotor including upper and lower ends, a vertical rotational axis and a turret having an inlet orifice communicating water with said stator bore and a nozzle orifice; (c) hydraulic drive means adapted for rotating said rotor; (d) a stabilizer ring associated with said stator bore lower end and rotatably receiving said rotor; (e) a stator water inlet associated with said stabilizer ring and adapted to communicate water between said stator base and said stator bore; and (f) bumper means associated with said rotor base and being adapted to engage said stabilizer ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A sprinkler, which comprises:
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(a) a container including a container bore; (b) a motor reciprocably received in said container bore and movable between a retracted position substantially within said container bore and an extended position extending outwardly therefrom, said motor including; (1) a stator having a hollow base and a hollow column with a stator bore, and (2) a rotor including a base, a rotor shaft rotatably received in said stator bore and a turret having at least one nozzle orifice; (c) hydraulic drive means adapted for rotating said rotor; (d) anti-friction means adapted for reducing anti-rotational frictional drag between said rotor and said stator; (e) said stator base having a coaxial, annular stabilizer ring shoulder open to said stator bore; (f) a stabilizer ring received in said stabilizer ring shoulder and rotatably receiving said rotor shaft; and (g) a bumper washer mounted on said rotor shaft adjacent to said rotor base, said bumper washer being adapted to engage said stabilizer ring to limit the upward travel of said rotor within said stator.
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25. A sprinkler, which comprises:
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(a) a container including a container bore and a water inlet for admitting water to said container bore; (b) a motor reciprocably received in said container bore and movable between a retracted position substantially within said container bore and an extended position extending outwardly therefrom, said motor including; (1) a stator having a hollow base receiving water from said container bore and a hollow column with a stator bore; and (2) a rotor including a base, a rotor shaft rotatably received in said stator bore and a turret having at least one nozzle orifice; (c) hydraulic drive means adapted for rotating said rotor; (d) anti-friction means adapted for reducing anti-rotational frictional drag between said rotor and said stator; (e) said stator base having a coaxial, annular stabilizer ring shoulder open to said stator bore; (f) a stabilizer ring received in said stabilizer ring shoulder and rotatably receiving said rotor shaft; and (g) said stabilizer ring shoulder including a plurality of radially-spaced notches extending between and communicating water between said hollow stator base and said stator bore.
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26. A sprinkler, which comprises:
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(a) a container including; (1) upper and lower ends; (2) a container bore; and (3) a container cover mounted on said container upper end and having a coaxial bore extending therethrough; (b) an hydraulic motor reciprocably mounted in said container bore, said motor being movable between a retracted position substantially within said container bore and an extended position extending upwardly therefrom and including a stator, a plate assembly and a rotor; (c) said stator including; (1) a hollow base with a lower edge; (2) a hollow column mounted on and extending upwardly from said base and having a stator bore extending vertically therethrough; and (3) an arc shield mounted on the upper end thereof, said arc shield having a bore terminating at a blind end; (d) said plate assembly including; (1) a bottom plate mounted on said stator lower edge whereby a raceway is enclosed by said bottom plate within said hollow base; (2) a water inlet extending between said container bore and said plate assembly; and (3) a swirl jet adapted to receive water from said inlet and communicate said water with said raceway whereby a swirling vortex is formed in said raceway; (e) said rotor including; (1) a rotor base having an impact lever within said raceway; (2) a rotor shaft attached to and extending upwardly from said rotor base and having upper and lower ends, said rotor shaft being rotatably received in said stator bore; and (3) a turret assembly mounted on said rotor shaft upper end and including a nozzle orifice communicating with said stator column bore and adapted for dispensing water from said sprinkler, said turret assembly being located within said arc shield bore in spaced relation below said arc shield blind end whereby water communicates from said stator bore to said blind end with said sprinkler in operation for exerting a downward force on said rotor; and (f) a ball located within said raceway and adapted to revolve around a rotation axis of said rotor in said vortex, said ball being adapted to strike said impact lever whereby said rotor is rotated. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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35. A sprinkler, which comprises:
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(a) a container including; (1) upper and lower ends; (2) a container bore; and (3) a container cover mounted on said container upper end and having a coaxial bore extending therethrough; (b) an hydraulic motor reciprocably mounted in said container bore, said motor being movable between a retracted position substantially within said container bore and an extended position extending upwardly therefrom and including a stator, a plate assembly and a rotor; (c) said stator including; (1) a hollow base with a lower edge; and (2) a hollow column mounted on and extending upwardly from said base and having a stator bore extending vertically therethrough; (d) said plate assembly including; (1) a bottom plate mounted on said stator lower edge whereby a raceway is enclosed by said bottom plate within said hollow base; (2) a water inlet extending between said container bore and said plate assembly; and (3) a swirl jet adapted to receive water from said inlet and communicate said water with said raceway whereby a swirling vortex is formed in said raceway; (e) said rotor including; (1) a rotor base having an impact lever within said raceway; (2) a rotor shaft attached to and extending upwardly from said rotor base and having upper and lower ends, said rotor shaft being rotatably received in said stator bore; and (3) a turret assembly mounted on said rotor shaft upper end and including a nozzle orifice communicating with said stator column bore and adapted for dispensing water from said sprinkler; (f) a ball located within said raceway and adapted to revolve around a rotational axis of said rotor in said vortex, said ball being adapted to strike said impact lever whereby said rotor is rotated; (g) said stator base having a coaxial, annular stabilizer ring shoulder open to said stator bore; (h) a stabilizer ring received in said stabilizer ring shoulder and rotatably receiving said rotor shaft, said stabilizer ring having a radially-extending cutout on an inside diameter thereof; and (i) said stator base having a plurality of notches extending outside of and above said stabilizer ring shoulder for communicating water from said raceway to said stator bore.
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Specification