US3729142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drippers for irrigation
Assignee: Individual
•
Filing: 1970-12-03
•
Granted: 1973-04-24
•
Expires: 1990-12-03
Abstract
Abstract A dripper for irrigation has a removable male member with a handle and ridges providing a meandering water flow path for controlling pressure drop and is held in a smooth walled female receptacle by tabs for quick removal by twisting the handle. A clamping member accompanying holds the dripper by surrounding supply pipe lines of various sizes with an aperture therethrough to receive a dripper extension by means of a mating lock hook portion engaging the inner walls of the supply pipe line. The dripper male member ridges may be made of plastic to allow ready removal of ridge portions for changing the path and drip rate.
Inventors
- 👤 Garza J Rangel
- 👤 Diaz J Leal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:53
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02; A01G25/023; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/22
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
150 words
An irrigation dripper assembly comprising in combination, a substantially cylindrical hollow thin walled female member having an open receptacle end and a smooth interior wall surface, a male member for insertion into said female member having ridges on its outer surface for engaging said interior wall and providing between said wall and the valleys between the ridges of the male member a meandering zig-zag liquid flow path and discharge means for the liquids between the male and female members thereby providing with said female and male members a liquid dispensing head, locking means removably holding said male member in position in said female member, clamping means affixed to said female member for mounting said assembly at an aperture located in a continuous liquid feeder pipe, and liquid feed structure arranged to extend into a feeder pipe in mounted position and pass water from the pipe into said meandering flow path.
Claim 2
Dependent Claim
150 words
An irrigation dripper assembly comprising in combination, a substantially cylindrical hollow thin walled female member having an open receptacle end and a smooth interior wall surface, a male member for insertion into said female member having ridges on its outer surface for engaging said interior wall and providing between said wall and the valleys between the ridges of the male member a meandering zig-zag liquid flow path and discharge means for the liquids between the male and female members thereby providing with said female and male members a liquid dispensing head, locking means removably holding said male member in position in said female member, clamping means affixed to said female member for mounting said assembly at an aperture located in a continuous liquid feeder pipe, and liquid feed structure arranged to extend into a feeder pipe in mounted position and pass water from the pipe into said meandering flow path.
Claim 3
Dependent Claim
56 words
An assembly as defined in claim 1 wherein said locking means comprises a pair of flexible ears extending from said male member and a set of mating receptacle slots in the walls of said female member so arranged that the ears are disengaged from said slots when said male member is rotated within the female member.
Claim 4
Dependent Claim
33 words
An assembly as defined in claim 2 wherein the male member includes a handle extending outside said female member for providing a twisting moment to said male member for disengaging said locking means.
Claim 5
Dependent Claim
30 words
An assembly as defined in claim 1 wherein said ridges on said male member are of a plastic material that can be readily cut to change said meandering flow path.
Claim 6
Dependent Claim
18 words
An assembly as defined in claim 1 wherein the clamping means are integrally attached to said female member.
Claim 7
Dependent Claim
46 words
An assembly as defined in claim 1 including a stop member on said male member adapted to contact the female member and close the open receptacle end of said female member to prevent entrance of dirt from outside the head when the locking means is engaged.
Claim 8
Dependent Claim
69 words
An assembly as defined in claim 1 wherein the liquid feed structure comprises a pivot member having a neck for registering in the aperture of the feed pipe and an enlarged head for passing through said feeder pipe and engaging the inner surface thereof which pivot member is integrally affixed to said female member and said clamp member at a point of reduced diameter permitting a degree of flexing.
Claim 9
Dependent Claim
37 words
An assembly as defined in claim 1 wherein the clamp is a substantially cylindrical shaped member for surrounding the feeder pipe, and the female member is connected thereto to extend substantially normally away from the feeder pipe.
Claim 10
Dependent Claim
24 words
An assembly as defined in claim 8 wherein the clamp member has two edges meeting in a direction substantially linearly along the feeder pipe.
Claim 11
Dependent Claim
18 words
An assembly as defined in claim 9 including structure for fastening togethEr the two edges of the clamp.
Claim 12
Dependent Claim
25 words
An assembly as defined in claim 10 wherein the fastening structure comprises a projecting member on each clamp edge adapted to receive a belt therebetween.
Claim 13
Dependent Claim
29 words
An assembly as defined in claim 9 wherein the two edges of said clamp are disposed substantially 90* from the female member about the circumference of the feeder pipe.
Claim 14
Dependent Claim
30 words
An assembly as defined in claim 8 wherein the clamp member is of a material that can be readily cut to adapt the assembly to feeder pipes of smaller diameter.
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |