US3830200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Research cage apparatus with improved filter clamping means
Assignee: RES EQUIPMENT CO Inc
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Filing: 1973-01-19
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Granted: 1974-08-20
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Expires: 1993-01-19
Abstract
Abstract A multi-unit animal cage apparatus for housing small animals such as rodents under controlled environmental conditions, including a rack formed of vertical frame members interconnected by front, rear and opposing side frame members, suspensory rails being mounted under the front and rear frame members for slidably receiving cage-drawers; and, a support screen mounted onto the front and rear frame members and the suspensory flanges to receive and support a filter material that is held in place by releasable clamping means attached with the front, rear, and opposing side members.
Inventors
- 👤 C Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:59
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/02; A01K1/03; A01K1/031; A01K1/0313
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
122 words
An improved multi-unit animal caging system, comprising: a rack including vertical frame members interconnected by front, rear and opposing side frame members; suspensory flanges mounted with said front and rear frame members, said suspensory flanges being adapted to slidably receive cage-drawers for housing animals; a support screen attached to said front and rear frame members and to said suspensory flanges to form a support surface above said cage-drawers; a filter material positioned on said support screen; and releasable clamping means connected to said front and rear frame members for movement between a released position and a clamped position, in which said filter material is clamped against said support screen by said clamping means to minimize the transfer of contagion into said cage-drawers.
Claim 2
Dependent Claim
122 words
An improved multi-unit animal caging system, comprising: a rack including vertical frame members interconnected by front, rear and opposing side frame members; suspensory flanges mounted with said front and rear frame members, said suspensory flanges being adapted to slidably receive cage-drawers for housing animals; a support screen attached to said front and rear frame members and to said suspensory flanges to form a support surface above said cage-drawers; a filter material positioned on said support screen; and releasable clamping means connected to said front and rear frame members for movement between a released position and a clamped position, in which said filter material is clamped against said support screen by said clamping means to minimize the transfer of contagion into said cage-drawers.
Claim 3
Dependent Claim
57 words
The structure set forth in claim 1, wherein said releasable clamping means includes: a clamp rod extending longitudinally of said front frame member; and rod connection means pivotally connecting said clamp rod to said front frame member foR moving said clamp rod to a clamped position against said front frame member with said filter material clamped therebetween.
Claim 4
Dependent Claim
48 words
The structure set forth in claim 2, wherein: said front frame member includes a recessed portion in which said support screen is mounted; said filter material is positioned in said recessed portion; and said clamp rod in said clamped position engages said filter material in said recessed portion.
Claim 5
Dependent Claim
30 words
The structure set forth in claim 2, wherein said rod connection means includes: a curved rod portion attached to said clamp rod and pivotally attached to said front frame member.
Claim 6
Dependent Claim
28 words
The structure set forth in claim 2, wherein: said clamp rod is movable to a released position so that said filter material can be easily removed or replaced.
Claim 7
Dependent Claim
48 words
The structure set forth in claim 1, including: a clamp bar; connecting means pivotally mounting said clamp bar to an opposing side frame member for movement between a released position and a clamped position wherein said clamp bar engages and holds said filter material against said support screen.
Claim 8
Dependent Claim
41 words
The structure set forth in claim 6, including: said clamp bar including opposing sides that releasably engage said opposing side frame member with said clamp bar in said clamped position to hold said clamp bar in engagement with said filter material.
Claim 9
Dependent Claim
69 words
The structure set forth in claim 1, wherein: said releasable clamping means includes clamp rods pivotally mounted by rod connection means to said front and rear frame members for clamping opposing ends of said filter material against said support screen; and clamp bars pivotally mounted by bar connection means to each of said opposing side frame members for clamping opposing ends of said filter material against said support screen.
References Cited (Backward Citations)
US3304913A
Cited
US3456618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |