US3662427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum-pressure apparatus for sweeping exterior areas
Assignee: COLEMAN CO AMERICAN
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Filing: 1970-07-01
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Granted: 1972-05-16
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Expires: 1990-07-01
Abstract
Abstract An apparatus using a high-pressure air stream in an open-ended chamber to dislodge dust, pebbles and other debris from large planar surfaces such as parking lots, roads, streets, alleys, etc., and the ''''swept'''' material is collected by vacuum and carried to a collector compartment where the swept material settles out of the air and a portion of the air is recycled.
Inventors
- 👤 Bruce Hanna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:21
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/08; E01H1/0863
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
187 words
In a vacuum cleaning system for mounting on a truck or the like: a. an elongated enclosed head having an open bottom including mounting means for mounting said head on a truck in the proximity of the ground; b. said head including a forward vacuum chamber and a rear vacuum chamber connected at least at one end and a middle pressure chamber communicating with said at least one connected end of said vacuum chambers; c. the longitudinal walls of said chambers being flexible and the wall between said pressuRe chamber and said forward vacuum chamber being shorter than the other said walls; d. a debris collection compartment arranged to be mounted on the bed of a truck; e. a blower mounted adjacent said debris collection compartment; f. means for running said blower; g. pressure duct means extending from the outlet side of said blower into said pressure chamber; h. vacuum duct means extending from said head communicating said at least one connected end of said vacuum chambers to said debris collection compartment; and i. duct means connecting said debris collection compartment to the intake of said blower.
Claim 2
Dependent Claim
187 words
In a vacuum cleaning system for mounting on a truck or the like: a. an elongated enclosed head having an open bottom including mounting means for mounting said head on a truck in the proximity of the ground; b. said head including a forward vacuum chamber and a rear vacuum chamber connected at least at one end and a middle pressure chamber communicating with said at least one connected end of said vacuum chambers; c. the longitudinal walls of said chambers being flexible and the wall between said pressuRe chamber and said forward vacuum chamber being shorter than the other said walls; d. a debris collection compartment arranged to be mounted on the bed of a truck; e. a blower mounted adjacent said debris collection compartment; f. means for running said blower; g. pressure duct means extending from the outlet side of said blower into said pressure chamber; h. vacuum duct means extending from said head communicating said at least one connected end of said vacuum chambers to said debris collection compartment; and i. duct means connecting said debris collection compartment to the intake of said blower.
Claim 3
Dependent Claim
32 words
In a vacuum cleaning system according to claim 1 wherein said pressure chamber is formed from a continuous flexible wall extending around said pressure chamber and opening adjacent said vacuum duct means.
Claim 4
Dependent Claim
21 words
In a vacuum cleaning system according to claim 1 wherein said forward and rear vacuum chambers are connected at both ends.
Claim 5
Dependent Claim
35 words
In a vacuum cleaning system according to claim 1 wherein baffle means are mounted adjacent said at least one connected end of said vacuum chambers for preventing vortex action of air entering said vacuum duct.
Claim 6
Dependent Claim
59 words
In a vacuum cleaning system according to claim 1 wherein water supply means are provided adjacent said debris collection compartment, and a line is extended from said water supply means to a point in said vacuum duct means spaced from said debris collection compartment for introducing water into the stream of air and debris passing through said duct means.
Claim 7
Dependent Claim
26 words
In a vacuum cleaning system according to claim 1 wherein said shorter wall is arranged to be positioned approximately one-half inch above ground level during operation.
Claim 8
Dependent Claim
36 words
In a vacuum cleaning system according to claim 1 wherein said pressure chamber in said head converges from the pressure duct outlet to the vacuum duct inlet at the opposed end thereof adjacent said vacuum outlet.
Claim 9
Dependent Claim
44 words
In a vacuum cleaning system according to claim 1 wherein said plurality of deflector plates depend across said pressure duct outlet deflecting the air stream emitted therefrom at an angle away from vertical towards said at least one communicating end of said pressure chamber.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |