US5031833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprinkler
Assignee: Individual
•
Filing: 1990-02-22
•
Granted: 1991-07-16
•
Expires: 2010-02-22
Abstract
Abstract A gear driven rotary sprinkler comprising a base defining a liquid inlet, a sprinkler head which is rotatable about a rotation axis fixed in the base, liquid driven gear apparatus for driving the sprinkler head in rotation about the rotation axis, clutch apparatus for selectably decoupling the sprinkler head from the gear apparatus upon forced rotation of the sprinkler head, apparatus for limiting the speed of rotation of the sprinkler head under high pressure and/or high volume conditions, apparatus for selectably limiting the azimuth of rotation including an over-center spring mechanism, and a liquid flow pathway from the liquid inlet to the sprinkler head including suctioning apertures operative to draw sediment from the liquid driven gear apparatus by venturi action and to flush it from the sprinkler.
Inventors
- 👤 Uri Alkalay
- 👤 Moshe Gorney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:36
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/04; B05B3/0417; B05B3/0432; B05B3/0435
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
124 words
A gear driven rotary sprinkler comprising: a base defining a liquid inlet; a sprinkler head which is rotatable about a rotation axis fixed in the base; liquid driven gear means for driving the sprinkler head in rotation about the rotation axis; clutch apparatus for selectably decoupling the sprinkler head from the gear apparatus upon forced rotation of the sprinkler head; means for limiting the speed of rotation of the sprinkler head under high pressure conditions; means for selectably limiting the azimuth of rotation including an over-center spring mechanism; and a liquid flow pathway from the liquid inlet to the sprinkler head including suctioning apertures operative to draw sediment from the liquid driven gear apparatus by venturi action and to flush it from the sprinkler.
Claim 2
Dependent Claim
124 words
A gear driven rotary sprinkler comprising: a base defining a liquid inlet; a sprinkler head which is rotatable about a rotation axis fixed in the base; liquid driven gear means for driving the sprinkler head in rotation about the rotation axis; clutch apparatus for selectably decoupling the sprinkler head from the gear apparatus upon forced rotation of the sprinkler head; means for limiting the speed of rotation of the sprinkler head under high pressure conditions; means for selectably limiting the azimuth of rotation including an over-center spring mechanism; and a liquid flow pathway from the liquid inlet to the sprinkler head including suctioning apertures operative to draw sediment from the liquid driven gear apparatus by venturi action and to flush it from the sprinkler.
Claim 3
Dependent Claim
30 words
Apparatus according to claim 1, and wherein said means for selectably limiting the azimuth of rotation comprises a joined leaf spring and flow director arranged to have two alternative positions.
Claim 4
Dependent Claim
18 words
Apparatus according to claim 2 and wherein said joined leaf spring and said flow director are integrally formed.
Claim 5
Dependent Claim
37 words
Apparatus according to claim 3, and also including a pressure responsive valve connected to said inlet, for preventing entry of a liquid into said sprinkler when the pressure of said liquid is below a selected minimum pressure.
Claim 6
Dependent Claim
21 words
Apparatus according to claim 4 further comprising means for selectably limiting the accumulated volumetric flow of liquid through said sprinkler assembly.
Claim 7
Dependent Claim
30 words
Apparatus according to claim 5, wherein said means for selectably limiting the accumulated volumetric flow including valve means driven by said liquid driven gear means for driving the sprinkler head.
Claim 8
Dependent Claim
32 words
Apparatus according to claim 6, further comprising clutch means for accommodating single direction rotation of the sprinkler during part circle operation, said clutch means being associated with said liquid driven gear means.
Claim 9
Dependent Claim
112 words
A gear driven rotary sprinkler comprising: a base defining a liquid inlet; a sprinkler head which is rotatable about a rotation axis fixed in the base; liquid driven gear means for driving the sprinkler head in rotation about the rotation axis; and means for selectably limiting the azimuth of rotation including an over-center spring mechanism including an integrally formed, fixedly joined leaf spring and flow director arranged to have only two discrete alternative positions, wherein said leaf spring has a longitudinal axis and is bendable over said longitudinal axis so as to cause said flow director to be incapable of assuming a position other than one of said two alternative discrete positions.
Claim 10
Dependent Claim
112 words
A gear driven rotary sprinkler comprising: a base defining a liquid inlet; a sprinkler head which is rotatable about a rotation axis fixed in the base; liquid driven gear means for driving the sprinkler head in rotation about the rotation axis; and means for selectably limiting the azimuth of rotation including an over-center spring mechanism including an integrally formed, fixedly joined leaf spring and flow director arranged to have only two discrete alternative positions, wherein said leaf spring has a longitudinal axis and is bendable over said longitudinal axis so as to cause said flow director to be incapable of assuming a position other than one of said two alternative discrete positions.
Claim 11
Dependent Claim
37 words
Apparatus according to claim 8, and also including a pressure responsive valve connected to said inlet, for preventing entry of a liquid into said sprinkler when the pressure of said liquid is below a selected minimum pressure.
Claim 12
Dependent Claim
77 words
A gear driven rotary sprinkler comprising: a base defining a liquid inlet; a sprinkler head which is rotatable about a rotation axis fixed in the base; liquid driven gear means for driving the sprinkler head in rotation about the rotation axis; and a liquid flow pathway from the liquid inlet to the sprinkler head including suctioning apertures operative to draw sediment from the liquid driven gear apparatus by venturi action and to flush it from the sprinkler.
Claim 13
Dependent Claim
77 words
A gear driven rotary sprinkler comprising: a base defining a liquid inlet; a sprinkler head which is rotatable about a rotation axis fixed in the base; liquid driven gear means for driving the sprinkler head in rotation about the rotation axis; and a liquid flow pathway from the liquid inlet to the sprinkler head including suctioning apertures operative to draw sediment from the liquid driven gear apparatus by venturi action and to flush it from the sprinkler.
Claim 14
Dependent Claim
37 words
Apparatus according to claim 10, and also including a pressure responsive valve connected to said inlet, for preventing entry of a liquid into said sprinkler when the pressure of said liquid is below a selected minimum pressure.
Claim 15
Dependent Claim
133 words
A sprinkler assembly comprising: a gear driven rotary sprinkler including a base defining a liquid inlet, a sprinkler head which is rotatable about a rotation axis fixed in the base, liquid driven gear means for driving the sprinkler head in rotation about the rotation axis, clutch apparatus for selectably decoupling the sprinkler head from the gear apparatus upon forced rotation of the sprinkler head, means for selectably limiting the azimuth of rotation including an over-center spring mechanism, and a liquid flow pathway from the liquid inlet to the sprinkler head including suctioning apertures operative to draw sediment from the liquid driven gear apparatus by venturi action and to flush it from the sprinkler; and means for selectably limiting the acumulated volumetric flow of liquid through said sprinkler assembly, coupled to said liquid inlet.
Claim 16
Dependent Claim
133 words
A sprinkler assembly comprising: a gear driven rotary sprinkler including a base defining a liquid inlet, a sprinkler head which is rotatable about a rotation axis fixed in the base, liquid driven gear means for driving the sprinkler head in rotation about the rotation axis, clutch apparatus for selectably decoupling the sprinkler head from the gear apparatus upon forced rotation of the sprinkler head, means for selectably limiting the azimuth of rotation including an over-center spring mechanism, and a liquid flow pathway from the liquid inlet to the sprinkler head including suctioning apertures operative to draw sediment from the liquid driven gear apparatus by venturi action and to flush it from the sprinkler; and means for selectably limiting the acumulated volumetric flow of liquid through said sprinkler assembly, coupled to said liquid inlet.
Claim 17
Dependent Claim
31 words
An assembly according to claim 12, and wherein said means for selectably limiting the azimuth of rotation comprises a joined leaf spring and flow director arranged to have two alternative positions.
Claim 18
Dependent Claim
19 words
An assembly according to claim 13, and wherein said joined leaf spring and said flow director are integrally formed.
Claim 19
Dependent Claim
38 words
An assembly according to claim 14, and also including a pressure responsive valve connected to said inlet, for preventing entry of the liquid into said sprinkler when the pressure of said liquid is below a selected minimum pressure.
Claim 20
Dependent Claim
136 words
A sprinkler assembly comprising: a gear driven rotary sprinkler including a base defining a liquid inlet; a sprinkler head which is rotatable about a rotation axis fixed in the base; liquid driven gear means for driving the sprinkler head in rotation about the rotation axis; and means for selectably limiting the azimuth of rotation including an over-center spring mechanism including an integrally formed, fixedly joined leaf spring and flow director arranged to have only two discrete alternative positions, wherein said leaf spring has a longitudinal axis and is bendable over said longitudinal axis so as to cause said flow director to be incapable of assuming a position other than one of said two alternative discrete positions; and means for selectably limiting the accumulated volumetric flow of liquid through said sprinkler assembly, coupled to said liquid inlet.
Claim 21
Dependent Claim
136 words
A sprinkler assembly comprising: a gear driven rotary sprinkler including a base defining a liquid inlet; a sprinkler head which is rotatable about a rotation axis fixed in the base; liquid driven gear means for driving the sprinkler head in rotation about the rotation axis; and means for selectably limiting the azimuth of rotation including an over-center spring mechanism including an integrally formed, fixedly joined leaf spring and flow director arranged to have only two discrete alternative positions, wherein said leaf spring has a longitudinal axis and is bendable over said longitudinal axis so as to cause said flow director to be incapable of assuming a position other than one of said two alternative discrete positions; and means for selectably limiting the accumulated volumetric flow of liquid through said sprinkler assembly, coupled to said liquid inlet.
Claim 22
Dependent Claim
38 words
An assembly according to claim 16, and also including a pressure responsive valve connected to said inlet, for preventing entry of the liquid into said sprinkler when the pressure of said liquid is below a selected minimum pressure.
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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) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |