Patent US4443997A successfully refreshed from Google Patents.
US4443997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for vacuum collection and compacting of leaves and grass clippings
Assignee: Individual
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Filing: 1982-03-03
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Granted: 1984-04-24
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Expires: 2002-03-03
Abstract
Abstract Apparatus for leaf and grass vacuuming and compaction in a bag, although usable independently is shown mounted on a wheeled carriage of a power lawnmower on which are mounted a push-handle, a gasoline engine, a lawnmower blade drivable by the engine, a vacuum chamber enclosing a fan drivable by the engine, and a receptacle bag above which is mounted a compactor having a reciprocably movable ram. The ram is driven either by a belt-drive from the engine, or by an electric motor energized from the engine generator or starter battery, or by a hydraulic pump/motor system driven by the engine. A pick-up hose is attached to the vacuum chamber inlet and a discharge hose is attached to the vacuum chamber outlet whereby material such as leaves and grass clippings entering the pick-up hose are expelled through the discharge hose into the removable bag. As the material fills the bag, the compactor is actuated to cause the movable ram member to repeatedly descend into the bag to compact the material therein. The compactor also includes a fan or centrifuge for blowing material off the ram and into the bag after the ram returns above the bag opening. The pick-up hose is selectively connectable to the lawnmower to pick up material as the lawn is being mowed or as the carriage is moved or manually while the carriage is stationary and the mower is disengaged.
Inventors
- 👤 Bahram Namdari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:31
CPC Classifications
A; A01; A01D; A01D43/00; A01D43/006; A01G; A01G20/00; A01G20/40; A01G20/43; A01G20/47
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
127 words
Vacuuming and compacting apparatus for material such as leaves and grass clippings comprising: a support; a prime mover on said support; a vacuum pump on said support and drivable by said prime mover, said vacuum pump having an inlet port for ingesting material and an outlet port for expelling material; a receptacle on said support and having an inlet port connected to the outlet port of said vacuum pump; and a compactor on said support and drivable by said prime mover, said compactor including a reciprocably movable ram for entering said receptacle and compacting the material therein, said ram moves to a position below said inlet port of said receptacle and further including a centrifuge for blowing material deposited on said ram therepast and into said receptacle.
Claim 2
Dependent Claim
127 words
Vacuuming and compacting apparatus for material such as leaves and grass clippings comprising: a support; a prime mover on said support; a vacuum pump on said support and drivable by said prime mover, said vacuum pump having an inlet port for ingesting material and an outlet port for expelling material; a receptacle on said support and having an inlet port connected to the outlet port of said vacuum pump; and a compactor on said support and drivable by said prime mover, said compactor including a reciprocably movable ram for entering said receptacle and compacting the material therein, said ram moves to a position below said inlet port of said receptacle and further including a centrifuge for blowing material deposited on said ram therepast and into said receptacle.
Claim 3
Dependent Claim
172 words
In a combined power lawnmower and vacuuming and compacting apparatus for material such as leaves and grass clippings, in combination: a chassis having ground-engaging wheels and a push-handle; a material-receiving housing on said chassis, said housing having an outlet opening; a rotatable mower blade mounted in said housing; a vacuum pump mounted on said chassis and having an inlet port and an outlet port; a rotatable fan blade in said pump; first conduit means connecting said outlet opening of said housing to said inlet port of said pump; a material-receiving receptacle on said chassis, said receptacle having an inlet opening; second conduit means connecting said outlet port of said pump to said inlet opening of said receptacle; a compactor on said chassis and including a ram reciprocably movable into said receptacle past said inlet opening of said receptacle, said compactor further including a centrifuge for blowing material deposited on said ram into said receptacle; and means on said chassis for driving said mower blade, said fan blade, said ram and said centrifuge.
Claim 4
Dependent Claim
172 words
In a combined power lawnmower and vacuuming and compacting apparatus for material such as leaves and grass clippings, in combination: a chassis having ground-engaging wheels and a push-handle; a material-receiving housing on said chassis, said housing having an outlet opening; a rotatable mower blade mounted in said housing; a vacuum pump mounted on said chassis and having an inlet port and an outlet port; a rotatable fan blade in said pump; first conduit means connecting said outlet opening of said housing to said inlet port of said pump; a material-receiving receptacle on said chassis, said receptacle having an inlet opening; second conduit means connecting said outlet port of said pump to said inlet opening of said receptacle; a compactor on said chassis and including a ram reciprocably movable into said receptacle past said inlet opening of said receptacle, said compactor further including a centrifuge for blowing material deposited on said ram into said receptacle; and means on said chassis for driving said mower blade, said fan blade, said ram and said centrifuge.
Claim 5
Dependent Claim
23 words
Apparatus according to claim 2 wherein said first conduit means is flexible and is detachably connected to said outlet opening of said housing.
Claim 6
Dependent Claim
25 words
Apparatus according to claim 2 or 3 wherein said means for driving said mower blade, said fan blade and said ram is a prime mover.
Claim 7
Dependent Claim
14 words
Apparatus according to claim 4 wherein said prime mover is an internal combustion engine.
Claim 8
Dependent Claim
13 words
Apparatus according to claim 4 wherein said prime mover is an electric motor.
Claim 9
Dependent Claim
15 words
Apparatus according to claim 5 wherein means for driving said centrifuge is an electric motor.
Claim 10
Dependent Claim
22 words
Apparatus according to claim 5 wherein said means for driving said centrifuge is a power transmission system connected to the prime mover.
Claim 11
Dependent Claim
19 words
Apparatus according to claim 4 further including a hydraulic system driven by said prime mover to operate said ram.
Claim 12
Dependent Claim
18 words
Apparatus according to claim 2 wherein said driving means includes a separate electric motor for driving said ram.
Claim 13
Dependent Claim
154 words
In vacuuming and compacting apparatus for material such as leaves and grass clippings, in combination: a chassis having ground-engaging wheels; a material-receiving housing on said chassis, said housing having an outlet opening; a vacuum pump mounted on said chassis and having an inlet port and an outlet port; a rotatable fan blade in said pump; first conduit means connecting said outlet opening of said housing to said inlet port of said pump; a material-receiving removable receptacle on said chassis, said receptacle having an inlet opening; second conduit means connecting said outlet port of said pump to said inlet opening of said receptacle; a compactor on said chassis and including a ram reciprocably movable into said receptacle past said inlet opening of said receptacle, said compactor further including a centrifuge for blowing material deposited on said ram into said receptacle; and means on said chassis for driving said fan blade, said ram and said centrifuge.
Claim 14
Dependent Claim
154 words
In vacuuming and compacting apparatus for material such as leaves and grass clippings, in combination: a chassis having ground-engaging wheels; a material-receiving housing on said chassis, said housing having an outlet opening; a vacuum pump mounted on said chassis and having an inlet port and an outlet port; a rotatable fan blade in said pump; first conduit means connecting said outlet opening of said housing to said inlet port of said pump; a material-receiving removable receptacle on said chassis, said receptacle having an inlet opening; second conduit means connecting said outlet port of said pump to said inlet opening of said receptacle; a compactor on said chassis and including a ram reciprocably movable into said receptacle past said inlet opening of said receptacle, said compactor further including a centrifuge for blowing material deposited on said ram into said receptacle; and means on said chassis for driving said fan blade, said ram and said centrifuge.
Claim 15
Dependent Claim
32 words
Apparatus according to claim 11 wherein said chassis includes a vertically movable platform on which said removable receptacle is mounted, and means for lowering said platform to enable removal of said receptacle.
Claim 16
Dependent Claim
24 words
Apparatus according to claim 11 including control means to stop reciprocating movement of said ram when said receptacle is filled to a predetermined height.
Claim 17
Dependent Claim
12 words
Apparatus according to claim 13 wherein said control means includes limit switches.
Claim 18
Dependent Claim
12 words
Apparatus according to claim 11 wherein chassis is part of a tractor.
Claim 19
Dependent Claim
19 words
Apparatus according to claim 11 wherein chassis is part of a trailer adapted to be towed by another vehicle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |