US3601095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equipment and method to facilitate the rearing of the young of spawn-producing crustaceans
Assignee: VAPOR AB
•
Filing: 1969-09-12
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Granted: 1971-08-24
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Expires: 1989-09-12
Abstract
Abstract Apparatus to facilitate rearing of the young of spawn-producing crustaceans, particularly crayfish, comprises a boxlike structure which includes an enclosure having a foraminous floor upon which one or more mother crayfish are supported and through which the young drop, after hatching, into a collection compartment which is also provided with a foraminous floor. The foraminous floor which supports the mother crayfish is constituted by a wire netting having a mesh size small enough to prevent passage of the mother crayfish but large enough to permit free passage of the newly hatched young into the underneath collection department, and the floor of the collection department is also a wire netting having a mesh size small enough to prevent escape of the young. The enclosure for confining the mother crayfish is provided with a cover also made from wire netting and through which food can be passed.
Inventors
- 👤 Hans Olof Lennart Olsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:32
CPC Classifications
A; A01; A01K; A01K61/00; A01K61/50; A01K61/59; Y; Y02; Y02A; Y02A40/00; Y02A40/80; Y02A40/81
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
159 words
Apparatus to facilitate the rearing of the young of spawnproducing crustaceans such as crayfish which comprises a boxlike enclosure established by sidewall, bottom and top members, said bottom member serving as a floor upon which to support the mother crayfish and being formed from a grating having a mesh size small enough to prevent passage of the crayfish but large enough to permit free passage of newly hatched young, said top member serving as a cover to confine the crayfish and being formed from a grating having a mesh size larger than that of said bottom member to permit passage of food to feed the crayfish, and means providing a compartment below said bottom member for collecting the newly hatched young when they drop through said bottom member, said collection compartment being comprised of sidewall and bottom members, and said bottom member being formed from a grating having a mesh size small enough to prevent passage of the young
Claim 2
Dependent Claim
159 words
Apparatus to facilitate the rearing of the young of spawnproducing crustaceans such as crayfish which comprises a boxlike enclosure established by sidewall, bottom and top members, said bottom member serving as a floor upon which to support the mother crayfish and being formed from a grating having a mesh size small enough to prevent passage of the crayfish but large enough to permit free passage of newly hatched young, said top member serving as a cover to confine the crayfish and being formed from a grating having a mesh size larger than that of said bottom member to permit passage of food to feed the crayfish, and means providing a compartment below said bottom member for collecting the newly hatched young when they drop through said bottom member, said collection compartment being comprised of sidewall and bottom members, and said bottom member being formed from a grating having a mesh size small enough to prevent passage of the young
Claim 3
Dependent Claim
64 words
Apparatus as defined in claim 1 to facilitate rearing of the young of spawn-producing crustaceans such as crayfish wherein the grating forming said bottom member which serves as a floor to support the mother crayfish has a mesh size of about 10 mm. and wherein the grating forming said top member through which food is passed has a mesh size of about 20 mm.
Claim 4
Dependent Claim
37 words
Apparatus as defined in claim 1 to facilitate rearing of the young of spawn-producing crustaceans such as crayfish wherein said enclosure is provided with partitions establishing individual compartments for separating the mother crayfish each from the other.
Claim 5
Dependent Claim
82 words
Apparatus as defined in claim 1 to facilitate rearing of the young of spawn-producing crustaceans such as crayfish wherein said top and bottom members of said boxlike enclosure for the crayfish as well as the sidewall thereof are each constituted by frames and wherein said sidewall and bottom members of collection compartment for the newly hatched young are also constituted by a frame, all of said frames being stacked in superposed relation but being separable each from the other to facilitate cleaning.
Claim 6
Dependent Claim
32 words
Apparatus as defined in claim 4 and wherein said frame which forms the sidewall of said boxlike enclosure includes partitions establishing individual compartments for separating the mother crayfish each from the other.
References Cited (Backward Citations)
US1639555A
Cited
US3464387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |