US3768193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brine shrimp harvesting apparatus
Assignee: Metaframe Corp
•
Filing: 1971-10-15
•
Granted: 1973-10-30
•
Expires: 1991-10-15
Abstract
Abstract Apparatus comprising a raft for floating along the surface of the body of water, the raft including a net for skimming the surface of the body of water and communicating with a sluice provided at the front end portion of the raft. A cylindrical screen extends partially into the sluice and communicates with the net for entrapping brine shrimp which are skimmed off the surface of the water by the net. The cylindrical screen includes an internal helical member which is coextensive therewith, the screen and helical member both being simultaneously rotated for helically conveying entrapped brine shrimp from the sluice to appropriate collection buckets provided on the top-side of the raft.
Inventors
- 👤 S London
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:20
CPC Classifications
A; A01; A01K; A01K71/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
Apparatus for removing brine shrimp from a fluid, said apparatus comprising first means extending partially in said fluid for entrapping brine shrimp, second means extending partially in said fluid and drivingly supported for transferring entrapped brine shrimp along said first means and out of said fluid, third means drivingly associated with said second means for driving said second means and permitting expelling said brine shrimp from said first means, said second means including a helical member extending internally of said first means and terminating in opposite end portions of said first means, one of said end portions being submerged in said fluid, the other of said end portions extending free from said fluid for expulsion of brine shrimp, said helical member being fixedly connected to said first means internally of said first means.
Claim 2
Dependent Claim
133 words
Apparatus for removing brine shrimp from a fluid, said apparatus comprising first means extending partially in said fluid for entrapping brine shrimp, second means extending partially in said fluid and drivingly supported for transferring entrapped brine shrimp along said first means and out of said fluid, third means drivingly associated with said second means for driving said second means and permitting expelling said brine shrimp from said first means, said second means including a helical member extending internally of said first means and terminating in opposite end portions of said first means, one of said end portions being submerged in said fluid, the other of said end portions extending free from said fluid for expulsion of brine shrimp, said helical member being fixedly connected to said first means internally of said first means.
Claim 3
Dependent Claim
18 words
Apparatus as claimed in claim 1, wherein said first means is fluid-pervious for permitting fluid to escape therefrom.
Claim 4
Dependent Claim
16 words
Apparatus as claimed in claim 2, wherein said first means includes a generally screened cylindrical wall.
Claim 5
Dependent Claim
39 words
Apparatus as claimed in claim 3, wherein the screened cylindrical wall includes a first portion submerged in said fluid and a second portion free from said fluid, said second portion having openings of smaller size than said first portion.
Claim 6
Dependent Claim
34 words
Apparatus as claimed in claim 1, including floatation means which supports said first means for permitting displacement of said first means along the surface of said fluid into entrapping relation with said brine shrimp.
Claim 7
Dependent Claim
26 words
Apparatus as claimed in claim 5, wherein said floatation means includes a sluice through which said first means projects into partially submerged relation in said fluid.
Claim 8
Dependent Claim
38 words
Apparatus as claimed in claim 6, wherein said floatation means includes a netted member at least partially submerged for skimming said fluid proximate the surface of the latter and communicating with both said sluice and said first means.
Claim 9
Dependent Claim
29 words
Apparatus as claimed in claim 1, wherein said first means is generally cylindrical and said helical member has a lesser lateral extent than the radius of said first means.
Claim 10
Dependent Claim
20 words
Apparatus as claimed in claim 1, including means for simultaneously rotating said first and second means along a common axis.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |