US4706720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clean funnel
Assignee: CLEAN FUNNEL Inc
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Filing: 1986-03-21
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Granted: 1987-11-17
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Expires: 2006-03-21
Abstract
Abstract A clean funnel including a funnel shaped housing having a large substance intake opening and a small substance outlet opening; an entirely removable first closure cap for sealing the large substance intake opening and an entirely removable second closure cap for sealing the small substance outlet opening, the first cap and the second cap each being sufficiently tight when in place to remain in place under conditions of funnel handling and movement and to prevent contamination of the funnel during periods of nonuse.
Inventors
- 👤 O. H. Pattison
- 👤 Will Pattison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:20
CPC Classifications
B; B67; B67C; B67C11/00; B67C11/02; B67C2011/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
A clean funnel comprising: a funnel shaped housing having a large substance intake opening and a small substance outlet opening; an entirely removable first closure cap means for sealing said large substance intake opening and an entirely removable second closure cap means for sealing said small substance outlet opening, said first closure cap means and said second closure cap means each being sufficiently tight when in place to remain in place under conditions of funnel handling and movement and to prevent contamination of said funnel during periods of nonuse.
Claim 2
Dependent Claim
89 words
A clean funnel comprising: a funnel shaped housing having a large substance intake opening and a small substance outlet opening; an entirely removable first closure cap means for sealing said large substance intake opening and an entirely removable second closure cap means for sealing said small substance outlet opening, said first closure cap means and said second closure cap means each being sufficiently tight when in place to remain in place under conditions of funnel handling and movement and to prevent contamination of said funnel during periods of nonuse.
Claim 3
Dependent Claim
18 words
The invention of claim 1 wherein at least one of said closure cap means comprises a slip cap.
Claim 4
Dependent Claim
18 words
The invention of claim 1 wherein at least one of said closure cap means comprises a clip plug.
Claim 5
Dependent Claim
26 words
The invention of claim 1 wherein at least one of said openings comprises a threaded lip and its corresponding closure cap means comprises a threaded cap.
Claim 6
Dependent Claim
27 words
The invention of claim 1 wherein at least one of said openings comprises an internal threaded portion and its corresponding closure cap means comprises a threaded plug.
Claim 7
Dependent Claim
15 words
The invention of claim 1 wherein said funnel shaped housing comprises a somewhat flexible material.
Claim 8
Dependent Claim
19 words
The invention of claim 1 wherein at least one of said closure cap means comprises a somewhat flexible material.
Claim 9
Dependent Claim
15 words
The invention of claim 1 wherein said funnel shaped housing comprises a substantially rigid material.
Claim 10
Dependent Claim
19 words
The invention of claim 1 wherein at least one of said closure cap means comprises a substantially rigid material.
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) | 1990-11-16 | 1991-05-18 | 1991-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-16 | 1995-05-18 | 1995-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-16 | 1999-05-18 | 1999-11-17 | $7700.00 | Window Closed / Lapsed |