US3623667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor for rotary sprinklers
Assignee: Rain Bird Corp
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Filing: 1970-03-11
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Granted: 1971-11-30
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Expires: 1990-03-11
Abstract
Abstract A motor for rotary sprinklers in which a fixed member and a rotatable member are disposed coaxially and are surrounded by a drive ring; the external surfaces of the fixed and rotatable members and the internal surface of the drive ring having two sets of intermeshing teeth which differ in ratio so that, for each rotation of the drive ring, the rotatable member turns in the same or opposite direction with respect to the drive ring a predetermined small amount. The intermeshing members are contained in a chamber having inlets positioned to direct water circumferentially against the drive ring to cause rotation and an outlet through the rotatable member terminating in a sprinkler nozzle.
Inventors
- 👤 Robert B Costa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:45
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/04; B05B3/0417
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
141 words
A fluid-operated motor, comprising: a. a housing structure having a motor chamber, and inlet means to cause rotary motion of water in the chamber; b. a tubular stem journaled in the body structure and having a sprinkler nozzle; c. a rotatable gear mounted on the end of the stem exposed to the chambEr; d. a fixed gear secured in the chamber in coaxial relation to the rotatable gear; e. a floating drive ring surrounding the gears and rotatable in response to rotary motion of water in the chamber; f. the drive ring having internal gear elements engageable respectively with the fixed and rotatable gears, to form a first and a second gear drive, the ratios of the gear drives being different thereby to cause the rotatable gear to turn a predetermined partial circle with each complete rotation of the drive ring.
Claim 2
Dependent Claim
141 words
A fluid-operated motor, comprising: a. a housing structure having a motor chamber, and inlet means to cause rotary motion of water in the chamber; b. a tubular stem journaled in the body structure and having a sprinkler nozzle; c. a rotatable gear mounted on the end of the stem exposed to the chambEr; d. a fixed gear secured in the chamber in coaxial relation to the rotatable gear; e. a floating drive ring surrounding the gears and rotatable in response to rotary motion of water in the chamber; f. the drive ring having internal gear elements engageable respectively with the fixed and rotatable gears, to form a first and a second gear drive, the ratios of the gear drives being different thereby to cause the rotatable gear to turn a predetermined partial circle with each complete rotation of the drive ring.
Claim 3
Dependent Claim
32 words
A motor, as defined in claim 1, wherein: a. the inlet means includes a sleeve fitted within the housing structure and tangentially disposed inlet openings formed in the walls of the sleeve.
Claim 4
Dependent Claim
30 words
A motor, as defined in claim 1, wherein: a. the inlet means is a disk defining the bottom of the chamber having helically directed inlet ports in the periphery thereof.
Claim 5
Dependent Claim
30 words
A motor, as defined in claim 1, wherein: a. a pair of fixed gears extend into the motor chamber from opposite ends thereof and the rotatable gear is interposed therebetween.
Claim 6
Dependent Claim
20 words
A motor, as defined in claim 1, wherein: a. the fixed and rotatable gears differ in the number of teeth.
Claim 7
Dependent Claim
23 words
A motor, as defined in claim 1, wherein: a. the internal gear elements of the drive ring differ in the number of teeth.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |