Patent US3920349A successfully refreshed from Google Patents.
US3920349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curb forming apparatus
Assignee: IRL DAFFIN ASSOCIATES
•
Filing: 1974-12-02
•
Granted: 1975-11-18
•
Expires: 1994-12-02
Abstract
Abstract A curb forming apparatus for extruding a paving material such as asphalt or concrete to continuously produce an elongated curb, median strip or the like including an extrusion assembly pivotable to either side of the frame means to enable the apparatus to be operated to lay a curb or the like on opposite sides without changing the direction of travel.
Inventors
- 👤 Jr Charles E Jennings
- 👤 John L Kugle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:45
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4886; E01C19/4893
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
321 words
A curb forming apparatus comprising, in combination, elongated frame means having a longitudinally extending central axis, longitudinally spaced forward and rearward ends and laterally spaced sides; hopper means having an inlet for receiving a material from which the curb is to be formed, and an outlet; conveyor means including a rotatably supported elongated auger means, an elongated auger housing having a generally upwardly opening inlet and longitudinally spaced open ends, and a compaction tube having longitudinally spaced ends; releasable securing means for attaching said hopper means to said auger housing with said outlet of said hopper means communicating with said inlet of said auger housing; driving means for rorating said auger means including motor means carried by said frame means and power transfer means operatively connecting said motor means to said auger means; curb forming means having longitudinally spaced open ends and longitudinally extending, laterally spaced, lower edged; and front and rear roller means carrying said forward and rearward ends, respectively, of said frame means and adapted for rollingly supporting said apparatus on a surface to be provided with a curb with said lower edges of said curb forming means juxtaposed to the surface; longitudinally spaced, laterally extending, elongated support arms, pivot means securing one end of each support arm to said frame means at about said central axis so that said support arms can be swung about said pivot means with portions of said support arms overhanging one or the other of said sides of said frame means, cleats on said frame means upon which said support arms rest; means for securing said auger housing; said auger means, said compaction tube and said curb forming means to each other in operable relationship to define an extrusion assembly, and means for securing said extrusion assembly to said overhanging portions of said support arms so that said apparatus can be operated to form a curb on either side of said frame means.
Claim 2
Dependent Claim
321 words
A curb forming apparatus comprising, in combination, elongated frame means having a longitudinally extending central axis, longitudinally spaced forward and rearward ends and laterally spaced sides; hopper means having an inlet for receiving a material from which the curb is to be formed, and an outlet; conveyor means including a rotatably supported elongated auger means, an elongated auger housing having a generally upwardly opening inlet and longitudinally spaced open ends, and a compaction tube having longitudinally spaced ends; releasable securing means for attaching said hopper means to said auger housing with said outlet of said hopper means communicating with said inlet of said auger housing; driving means for rorating said auger means including motor means carried by said frame means and power transfer means operatively connecting said motor means to said auger means; curb forming means having longitudinally spaced open ends and longitudinally extending, laterally spaced, lower edged; and front and rear roller means carrying said forward and rearward ends, respectively, of said frame means and adapted for rollingly supporting said apparatus on a surface to be provided with a curb with said lower edges of said curb forming means juxtaposed to the surface; longitudinally spaced, laterally extending, elongated support arms, pivot means securing one end of each support arm to said frame means at about said central axis so that said support arms can be swung about said pivot means with portions of said support arms overhanging one or the other of said sides of said frame means, cleats on said frame means upon which said support arms rest; means for securing said auger housing; said auger means, said compaction tube and said curb forming means to each other in operable relationship to define an extrusion assembly, and means for securing said extrusion assembly to said overhanging portions of said support arms so that said apparatus can be operated to form a curb on either side of said frame means.
Claim 3
Dependent Claim
81 words
A curb forming apparatus according to claim 1 wherein means are provided for securing said auger housing to said overhanding portions of said support arms, further means being provided for securing one end of said compaction tube to one end of said auger housing with said auger means extending through both said auger housing and said compaction tube, and still further means being provided for securing one end of said curb forming means to the other end of said compaction tube.
Claim 4
Dependent Claim
58 words
A curb forming apparatus according to claim 2 wherein said power transfer means include a gear box operatively connected to said auger means, a gear box housing supporting said gear box, means for securing said gear box housing to the other end of said auger housing, and pulley means operatively connecting said motor means with said gear box.
Claim 5
Dependent Claim
40 words
A curb forming apparatus according to claim 1 wherein said inlet of said auger housing extends generally upwardly and inwardly toward said frame means, said auger housing being reversed for forming a curb on opposite sides of said frame means.
Claim 6
Dependent Claim
48 words
A curb forming apparatus according to claim 1 further including vertically adjustable means securing said frame means to said front and rear roller means whereby said longitudinally extending lower edges of said curb forming means may be adjustablY juxtaposed to the surface to be provided with a curb.
Claim 7
Dependent Claim
57 words
A curb forming apparatus according to claim 1 further including laterally adjustable means securing said frame means to said front and rear roller means whereby said front and rear roller means may be adjustably offset in one direction or the other depending upon the side of said frame means on which the curb is to be formed.
Claim 8
Dependent Claim
33 words
A curb forming apparatus according to claim 1 wherein said front roller means includes a pair of laterally spaced, steerable front wheel members and said rearwheel means includes a single rear wheel members.
Claim 9
Dependent Claim
38 words
A curb forming apparatus according to claim 7 further including brake means operatively associated with said rear wheel member, thereby providing control over the compaction of the curb forming material in the event the apparatus is progressing downhill.
References Cited (Backward Citations)
US2539063A
Cited
US3053156A
Cited
US3138079A
Cited
US3137220A
Cited
US3280711A
Cited
US3606827A
Cited
US3566760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |