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US3760769A Expired / Lapsed US ⏱️ 0.0 years remaining

Floor grate in cages or batteries of cages for keeping poultry

Assignee: Lohmann Apparatebau KG
•
Filing: 1971-03-30
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Granted: 1973-09-25
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Expires: 1991-03-30
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Abstract

Abstract The invention relates to a floor grate assembly comprising separate grate portions having similar configurations and designed to be placed in cages or batteries of cages for keeping poultry. If the poultry is destined to produce eggs they may roll over the floor grate. According to the invention, at least the upper side of the upper grate portion stays, which are contacted by the animal, consist of soft material and has a width suitably accommodated to the feet of the animal. Preferably, at least the upper surface of the grate stays consists of a soft plastic material, especially soft or plasticized PVC (polyvinylchloride) or rubber. The lower grate portion is formed of relatively hard material and is a direct support for the upper grate portion.

Inventors

  • 👤 A Erfeling

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 10:56
CPC Classifications
A; A01; A01K; A01K31/00; A01K31/002; A01K31/007

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 77 words
A grated floor for poultry cages comprising, in combination, a grate assembly having an aligned separate grate lower portion and a separate grate upper portion of similar configuration, said upper portion being disposed toward the interior of the associated poultry cage, said lower portion being formed of a relatively hard material and constituting a support for said upper portion, said separate grate upper portion being directly supported by said lower portion and formed of a soft material.
Claim 2
Dependent Claim 77 words
A grated floor for poultry cages comprising, in combination, a grate assembly having an aligned separate grate lower portion and a separate grate upper portion of similar configuration, said upper portion being disposed toward the interior of the associated poultry cage, said lower portion being formed of a relatively hard material and constituting a support for said upper portion, said separate grate upper portion being directly supported by said lower portion and formed of a soft material.
Claim 3
Dependent Claim 35 words
In a grated floor for poultry cages as in claim 1 wherein said upper portion is formed of a soft PVC plastic material and said lower portion is formed of a hard PVC plastic material.

References Cited (Backward Citations)

US2606525A Cited
US2692578A Cited
GB832450A Cited
US3029789A Cited
US3242904A Cited
US3326186A Cited
US3641983A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-09-24 1977-03-26 1977-09-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-24 1981-03-26 1981-09-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-24 1985-03-26 1985-09-25 $7700.00 Window Closed / Lapsed

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