US4896392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device
Assignee: Individual
•
Filing: 1988-03-28
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Granted: 1990-01-30
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Expires: 2008-03-28
Abstract
Abstract A cleaning device for removal of sand and/or debris from the bottom of a tank. The device comprises a cylinder having an opening at a first end which is smaller than the cylinder. A handle is mounted on a second end of the cylinder. A vent opening is formed in the cylinder adjacent the handle. A valve is mounted on the handle to open and close the opening.
Inventors
- 👤 Harold L. Hull
- 👤 Charles Partee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:58
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/1609; B; B08; B08B; B08B9/00; B08B9/08; A; A61; A61H; A61H33/00; A61H2033/0037
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
79 words
A cleaning device comprising a cylinder with an opening at a first end, said opening being substantially smaller than said cylinder, a debris retaining chamber in said cylinder, a handle mounted at a second end of said cylinder, a vent opening in said cylinder adjacent said handle, a valve means mounted on said handle positioned to open and close said vent opening, and means on said handle to move said valve means, to open and close said vent opening.
Claim 2
Dependent Claim
79 words
A cleaning device comprising a cylinder with an opening at a first end, said opening being substantially smaller than said cylinder, a debris retaining chamber in said cylinder, a handle mounted at a second end of said cylinder, a vent opening in said cylinder adjacent said handle, a valve means mounted on said handle positioned to open and close said vent opening, and means on said handle to move said valve means, to open and close said vent opening.
Claim 3
Dependent Claim
43 words
The device of claim 1 in which the said opening at a first end of said cylinder is a tube smaller than said cylinder, extending outwardly from a first wall of said cylinder and being a part of and cooperating with said cylinder.
Claim 4
Dependent Claim
28 words
The device of claim 1 in which the said debris retaining chamber slopes sharply away from said opening at said first end in substantially a ninety degree angle.
Claim 5
Dependent Claim
21 words
The device of claim 1 in which said handle mounted at said second end of said cylinder is a pistol grip.
Claim 6
Dependent Claim
23 words
The device of claim 1 in which said means to open and close said valve means is a trigger and a return spring.
Claim 7
Dependent Claim
91 words
A cleaning device comprising a cylinder with an opening at a first end, said opening being smaller than said cylinder, a debris retaining chamber in said cylinder, means to removably mount a tube in said opening, said tube extending from the outside of said opening into the interior of said chamber, a handle means mounted at a second end of said cylinder, an opening in said handle, said opening in said handle leading into said debris retaining chamber, whereby said opening in said handle is closeable by a thumb or finger.
Claim 8
Dependent Claim
91 words
A cleaning device comprising a cylinder with an opening at a first end, said opening being smaller than said cylinder, a debris retaining chamber in said cylinder, means to removably mount a tube in said opening, said tube extending from the outside of said opening into the interior of said chamber, a handle means mounted at a second end of said cylinder, an opening in said handle, said opening in said handle leading into said debris retaining chamber, whereby said opening in said handle is closeable by a thumb or finger.
Claim 9
Dependent Claim
17 words
The device of claim 6 in which said means to removably mount said tube is a cork.
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) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |