Patent US3993141A successfully refreshed from Google Patents.
US3993141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pin cylinder litter collector
Assignee: Foster Grant Co Inc
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Filing: 1974-11-18
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Granted: 1976-11-23
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Expires: 1994-11-18
Abstract
Abstract A pin cylinder litter collector for picking up litter by wedging or piercing action comprising a frame, a first shaft rotatable in the frame, and rods secured spacedly radially of said first shaft with said rods having sharp pointed free ends and sleeves of resilient material mounted on them a distance from the sharp pointed ends in order to pick up litter by piercing and wedging respectively. A second shaft is mounted rotatably in the frame and cooperates with the first shaft. On this second shaft is mounted a device for removing litter from the points and in between the sleeves of the rods on the first shaft consisting of first sections which are cylinder brush sections which are aligned for removing litter from the sharp points of the rods and second sections which may be made of metal, plastic, or other suitable material, which are aligned to remove wedged litter from in between the sleeves of the rods. Means are provided to operably connect the first and second shafts, the latter being driven by the former. Litter is discharged into a container removably attached to the frame.
Inventors
- 👤 Paul C. Donohue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:56
CPC Classifications
E; E01; E01H; E01H1/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
288 words
A `litter picker` comprising in combination a frame, a first horizontal shaft rotatably mounted in said frame, means for attaching a plurality of rods radially of said shaft, a plurality of spaced flexible rods attached to said attaching means radially of said shaft, said rods having free ends which terminate in sharp points, said free ends extending beyond the frame and to or into the surface below so as to pierce and engage paper, cardboard, and like litter thereon, said rods also provided with sleeves of resilient material for frictionally engaging litter therebetween, said sleeves being spaced a distance from said sharp points, a second shaft rotatably mounted in said frame rearwardly of said first shaft, means operably connecting said first and second shafts, a litter removing device secured to said second shaft, said device consisting of one or more first or brush sections and one or more second sections, said first or brush sections being made of radially attached brush material, with each said brush section being so aligned and of such a radius as to, upon the cooperative rotation of said first and second shafts, intercept the rod areas at and near the points and beyond the sleeves of a column of rotating rods and remove litter therefrom, said second sections being made of metal, durable plastic, or other suitable material, with each said second section being so aligned and circumscribing, at some part, on rotation, a cylinder or circle of such radius as to, upon the cooperative rotation of the said first and second shafts, rotate between the sleeves of two rotating columns of rods and dislodge litter from therebetween, and a bin for litter collection secured to said frame into which litter is discharged.
Claim 2
Dependent Claim
288 words
A `litter picker` comprising in combination a frame, a first horizontal shaft rotatably mounted in said frame, means for attaching a plurality of rods radially of said shaft, a plurality of spaced flexible rods attached to said attaching means radially of said shaft, said rods having free ends which terminate in sharp points, said free ends extending beyond the frame and to or into the surface below so as to pierce and engage paper, cardboard, and like litter thereon, said rods also provided with sleeves of resilient material for frictionally engaging litter therebetween, said sleeves being spaced a distance from said sharp points, a second shaft rotatably mounted in said frame rearwardly of said first shaft, means operably connecting said first and second shafts, a litter removing device secured to said second shaft, said device consisting of one or more first or brush sections and one or more second sections, said first or brush sections being made of radially attached brush material, with each said brush section being so aligned and of such a radius as to, upon the cooperative rotation of said first and second shafts, intercept the rod areas at and near the points and beyond the sleeves of a column of rotating rods and remove litter therefrom, said second sections being made of metal, durable plastic, or other suitable material, with each said second section being so aligned and circumscribing, at some part, on rotation, a cylinder or circle of such radius as to, upon the cooperative rotation of the said first and second shafts, rotate between the sleeves of two rotating columns of rods and dislodge litter from therebetween, and a bin for litter collection secured to said frame into which litter is discharged.
Claim 3
Dependent Claim
22 words
The device, as claimed in claim 1 further provided with one or more surface engaging wheels secured to the said first shaft.
Claim 4
Dependent Claim
37 words
The `litter picker` as claimed in claim 1 wherein said means operably connecting both said shafts comprises a pair of aligned sprocket wheels mounted on said shafts and an endless link chain engageable with said sprocket wheels.
Claim 5
Dependent Claim
43 words
The `litter picker` as claimed in claim 1 wherein said bin has a forward portion adjustably and detachably mounted on said frame and a cord detachably securing the rear of said bin to said frame, for maintaining said bin clear of the ground.
Claim 6
Dependent Claim
120 words
The `litter picker` as claimed in claim 1 wherein said means for attaching said rods to said first shaft consists of a molded tubular plastic housing which has arms extending radially inward to sleeves through which the first shaft passes, said tubular housing and said sleeves having aligned holes through which the rods pass, said tubular housing being filled with concrete or other suitable material which secures said rods, shaft, and housing together, said housing further provided with a smaller end of an outside diameter such that it will push fit into an inside diameter equal to that of the larger end so that two or more molded sections of this housing can engage each other as an extended housing.
Claim 7
Dependent Claim
27 words
The `litter picker` as claimed in claim 1 said frame being provided with means for securing said `litter picker` to a propulsion vehicle for said `litter picker`.
Claim 8
Dependent Claim
18 words
The `litter picker` as claimed in claim 1 said frame being provided with a handle for manual propulsion.
Claim 9
Dependent Claim
48 words
The `litter picker` as claimed in claim 1 wherein small pieces of metal are attached onto the said rods beyond the said sleeves to provide an improved rolling surface and to act as a stop to prevent pierced litter from being pushed up to the sleeves or both.
Claim 10
Dependent Claim
37 words
The `litter picker` as claimed in claim 1 wherein the said second section(s) of said `litter picker` consists of a plurality of strips, of metal or other suitable material, which are mounted radially to said second shaft.
Claim 11
Dependent Claim
45 words
The `litter picker` as claimed in claim 1, wherein the said second section(s) of said `litter removing device` consists of a plurality of curved tubes mounted radially to the said second shaft and presenting either convex or concave faces to the litter to be removed.
Claim 12
Dependent Claim
69 words
The `litter picker` as claimed in claim 1, wherein the said second section(s) of the said `litter removing device` consists of a flat-sided area(s) of metal, plastic or other suitable material mounted at or near its center on the said second shaft and shaped so that, when viewed from the periphery its peripheery forms one or more angles some of which angles, in operation, intercept and dislocate wedged litter.
Claim 13
Dependent Claim
25 words
The `litter picker` as claimed in claim 1 wherein the said second section(s) of the `litter removing device` consists of a cylinder brush or brushes.
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) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |