Patent US1594013A successfully refreshed from Google Patents.
Patent US3677472A successfully refreshed from Google Patents.
US3677472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary sprinkler
Assignee: Raid Bird Sprinkler Manufacturing Corp
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Filing: 1970-10-15
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Granted: 1972-07-18
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Expires: 1990-10-15
Abstract
Abstract A rotary sprinkler including a tubular rotor having impact lobes and a surrounding impact ring, contained in a motor chamber into which water is admitted in a manner to produce a swirling action thereby to cause rotation of the impact ring. The lower end of the rotor fits an upstanding journal pin provided with grooves permitting the flushing of particles carried in the water. A thrust bearing is provided at the upper portion of the rotor and a labyrinth packing aided by a deflector ring prevents entrance of particles into the bearing. Water exits from the motor chamber above the motor and below the deflector ring through passageways which tend to neutralize the swirling movement of the water.
Inventors
- 👤 Dennis L Hart
- 👤 Robert A Howery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:24
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/04; B05B3/0417
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
164 words
A rotary sprinkler, comprising: a. a rotor having a bore terminating in a discharge orifice and including a set of impact receiving lobes adjacent its lower end, and an enlarged portion above the lobes having laterally directed flow passages communicating with the rotor bore; b. means for rotatably mounting the rotor; c. means defining a motor chamber containing the lobes and enlarged portion and forming a surrounding annular chamber having at least one water inlet port positioned to cause the water to rotate about the periphery of the chamber and move spirally upward for discharge through the flow passages; d. and an impact ring surrounding the lobes between the bottom of the chamber and the enlarged portion and exposed to the rotating water to cause multiple impacts against the lobes thereby to cause slow rotation of the rotor, the rotor forming a barrier confining the major portion of the water to the region between the rotor and the surrounding wall of the annular chamber.
Claim 2
Dependent Claim
164 words
A rotary sprinkler, comprising: a. a rotor having a bore terminating in a discharge orifice and including a set of impact receiving lobes adjacent its lower end, and an enlarged portion above the lobes having laterally directed flow passages communicating with the rotor bore; b. means for rotatably mounting the rotor; c. means defining a motor chamber containing the lobes and enlarged portion and forming a surrounding annular chamber having at least one water inlet port positioned to cause the water to rotate about the periphery of the chamber and move spirally upward for discharge through the flow passages; d. and an impact ring surrounding the lobes between the bottom of the chamber and the enlarged portion and exposed to the rotating water to cause multiple impacts against the lobes thereby to cause slow rotation of the rotor, the rotor forming a barrier confining the major portion of the water to the region between the rotor and the surrounding wall of the annular chamber.
Claim 3
Dependent Claim
27 words
A rotary sprinkler, as defined in claim 1, wherein: a. the rotor mounting means includes a journal pin projecting upwardly from the bottom of the motor chamber.
Claim 4
Dependent Claim
72 words
A rotary sprinkler, as defined in claim 1, wherein: a. the rotor mounting means includes a journal pin projecting upwardly from the bottom of the motor chamber, a thrust bearing for the rotor above the motor chamber, and a porous barrier member surrounding the rotor between the thrust bearing and the motor chamber; b. and a deflector at the upper end of the motor chamber for directing water into the flow passages.
Claim 5
Dependent Claim
154 words
A rotary sprinkler, comprising: a. complementary housing members forming an inlet port and an inlet chamber; b. means secured between the housing members and disposed within the inlet chamber to form a motor chamber having at least one inlet opening communicating with the inlet chamber and positioned to cause swirling motion of water in the peripheral portion of the motor chamber; c. a rotor mounted for rotation within the housing members and including a bore terminating at its upper end in a discharge orifice, a set of impact receiving lobes adjacent its lower end within the motor chamber, and a radially enlarged portion above the lobes having swirl counteracting passages communicating between the motor chamber and the bore of the rotor to effect discharge of water from the motor chamber; d. and an impact ring surrounding the impact receiving lobes and exposed to the swirling water thereby to effect multiple impacts on the lobes.
Claim 6
Dependent Claim
154 words
A rotary sprinkler, comprising: a. complementary housing members forming an inlet port and an inlet chamber; b. means secured between the housing members and disposed within the inlet chamber to form a motor chamber having at least one inlet opening communicating with the inlet chamber and positioned to cause swirling motion of water in the peripheral portion of the motor chamber; c. a rotor mounted for rotation within the housing members and including a bore terminating at its upper end in a discharge orifice, a set of impact receiving lobes adjacent its lower end within the motor chamber, and a radially enlarged portion above the lobes having swirl counteracting passages communicating between the motor chamber and the bore of the rotor to effect discharge of water from the motor chamber; d. and an impact ring surrounding the impact receiving lobes and exposed to the swirling water thereby to effect multiple impacts on the lobes.
Claim 7
Dependent Claim
58 words
A rotary sprinkler, as defined in claim 4, wherein: a. said motor chamber forming means includes a journal pin extending upwardly into the rotor bore, the journal pin and adjacent wall portion of the motor chamber having flow channels communicating between the motor chamber and the rotor bore to lubricate the pin and effect discharge of particulate matter.
Claim 8
Dependent Claim
170 words
A water motor for rotary sprinklers, comprising: a. a rotor having a set of symmetrically disposed impact lobes; b. and an impact ring having one more side than the number of impact lobes on the rotor and journal corners between each side; c. the distance between adjacent lobes of the rotor and between adjacent journal corners of the impact ring being essentially the same to permit limited pivotal movement of the impact ring about each lobe in succession; d. the interior wall of the impact ring at both sides of each corner forming an arc tangent to the journal corner and having a center of curvature coinciding with the pivotal centers of the adjacent journal corners whereby the lobes and journal corners intermesh to provide uniform impact forces by the impact ring on the lobes; e. means defining a motor chamber surrounding the impact ring, and having a water inlet disposed to produce rotary movement of water around the impact ring thereby to induce rotary motion of the impact ring.
Claim 9
Dependent Claim
170 words
A water motor for rotary sprinklers, comprising: a. a rotor having a set of symmetrically disposed impact lobes; b. and an impact ring having one more side than the number of impact lobes on the rotor and journal corners between each side; c. the distance between adjacent lobes of the rotor and between adjacent journal corners of the impact ring being essentially the same to permit limited pivotal movement of the impact ring about each lobe in succession; d. the interior wall of the impact ring at both sides of each corner forming an arc tangent to the journal corner and having a center of curvature coinciding with the pivotal centers of the adjacent journal corners whereby the lobes and journal corners intermesh to provide uniform impact forces by the impact ring on the lobes; e. means defining a motor chamber surrounding the impact ring, and having a water inlet disposed to produce rotary movement of water around the impact ring thereby to induce rotary motion of the impact ring.
Claim 10
Dependent Claim
29 words
A wateR motor, as defined in claim 6, wherein: a. means is provided for discharge of water from a region of the motor chamber axially beyond the impact ring.
Claim 11
Dependent Claim
45 words
A rotary sprinkler, as defined in claim 1, wherein: a. the rotor mounting means includes a journal pin projecting upwardly from the bottom of the motor chamber, the pin having grooves to receive a portion of the water for lubrication and flushing of particulate matter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |