US3903558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eraser strip and chuck assembly for motor driven erasing machines
Assignee: Individual
•
Filing: 1972-11-06
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Granted: 1975-09-09
•
Expires: 1992-11-06
Abstract
Abstract An eraser strip and chuck assembly for motor driven erasing machines having a chuck tube for receiving eraser strips and having collet chuck means for releasably securing the eraser strips in immovable assembly with the rotatable chuck and chuck tube of the erasing machine. The strips of erasing material define gas passage means or, in the alternative, cooperate with the chuck tube and collet mechanism of the erasing machine to define gas passage means, for conducting a compressed gaseous medium to the contact point between the eraser strip and the surface being erased for the purpose of cooling the contacting surfaces and blowing erasure particles away from the immediate area being erased. The configuration of the eraser strip may also aid in the mechanical erasing process.
Inventors
- 👤 Clifford E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:12
CPC Classifications
B; B43; B43L; B43L19/00; B43L19/0006
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
203 words
An eraser strip and chuck assembly for motor powered erasing machines having means for conducting a flow of pressurized gas to a surface being erased for cooling and cleaning purposes, said eraser strip and chuck assembly comprising: a source of pressurized gas; a chuck tube being connected in driven relation to the motor of the erasing machine, said chuck tube receiving said pressurized gas; a collet mechanism being disposed at the lower extremity of said chuck tube; and a strip of erasing material being removably disposed within said chuck tube and collet mechanism said eraser strip having at least one elongated groove defined therein and extending along the length thereof, said groove cooperating with said chuck tube and said collet mechanism to define gas passage means between the exterior surface of said strip of erasing material and said chuck tube and collet mechanism, said gas passage means terminating at an outlet opening near the tip of said strip of erasing material and directing the flow of gas from said gas passage means against the surface being erased, said collet mechanism establishing releasable gripping relation with said strip of erasing material and confining the flow of said pressurized gas to said gas passage means.
Claim 2
Dependent Claim
203 words
An eraser strip and chuck assembly for motor powered erasing machines having means for conducting a flow of pressurized gas to a surface being erased for cooling and cleaning purposes, said eraser strip and chuck assembly comprising: a source of pressurized gas; a chuck tube being connected in driven relation to the motor of the erasing machine, said chuck tube receiving said pressurized gas; a collet mechanism being disposed at the lower extremity of said chuck tube; and a strip of erasing material being removably disposed within said chuck tube and collet mechanism said eraser strip having at least one elongated groove defined therein and extending along the length thereof, said groove cooperating with said chuck tube and said collet mechanism to define gas passage means between the exterior surface of said strip of erasing material and said chuck tube and collet mechanism, said gas passage means terminating at an outlet opening near the tip of said strip of erasing material and directing the flow of gas from said gas passage means against the surface being erased, said collet mechanism establishing releasable gripping relation with said strip of erasing material and confining the flow of said pressurized gas to said gas passage means.
Claim 3
Dependent Claim
18 words
An eraser strip and chuck assembly as recited in claim 1: said groove being of arcuate cross-sectional configuration.
Claim 4
Dependent Claim
37 words
An eraser strip and chuck assembly as recited in claim 1: collet seal means interposed between said collet mechanism and said eraser strip and preventing dissipation of gas from said gas passage means through said collet mechanism.
Claim 5
Dependent Claim
39 words
An eraser strip and chuck assembly as recited in claim 3: said collet seal means having a yieldable portion, said yieldable portion being urged by said collet mechanism into releasable friction locked engagement with said strip of eraser material.
Claim 6
Dependent Claim
27 words
An eraser strip and chuck assembly as recited in claim 1: said eraser strip defining at least one chipping edge for engaging the surface to be erased.
Claim 7
Dependent Claim
151 words
An eraser strip and chuck assembly for motor powered erasing machines having means for conducting a flow of pressurized gas to a surface being erased for cooling and cleaning purposes, said eraser strip and chuck assembly comprising: a source of pressurized gas; a chuck tube being connected in driven relation to the motor of the erasing machine, said chuck tube receiving said pressurized gas; a collet mechanism being disposed at the lower extremity of said chuck tube; a strip of erasing material being removably disposed within said chuck tube and collet mechanism, said strip of erasing material having a generally cylindrical peripheral surface; said collet mechanism defining at least one elongated internal groove, said groove cooperating with said cylindrical surface of said strip of erasing material to define gas passage means; and collet seal means disposed exteriorly of said collet mechanism and preventing dissipation of gaseous medium through said collet mechanism.
Claim 8
Dependent Claim
151 words
An eraser strip and chuck assembly for motor powered erasing machines having means for conducting a flow of pressurized gas to a surface being erased for cooling and cleaning purposes, said eraser strip and chuck assembly comprising: a source of pressurized gas; a chuck tube being connected in driven relation to the motor of the erasing machine, said chuck tube receiving said pressurized gas; a collet mechanism being disposed at the lower extremity of said chuck tube; a strip of erasing material being removably disposed within said chuck tube and collet mechanism, said strip of erasing material having a generally cylindrical peripheral surface; said collet mechanism defining at least one elongated internal groove, said groove cooperating with said cylindrical surface of said strip of erasing material to define gas passage means; and collet seal means disposed exteriorly of said collet mechanism and preventing dissipation of gaseous medium through said collet mechanism.
Claim 9
Dependent Claim
40 words
An eraser strip and chuck assembly as recited in claim 6: seal tabs being disposed internally of said collet mechanism and being received within said slots of said collet mechanism to seal said slots against dissipation of gaseous medium therethrough.
Claim 10
Dependent Claim
124 words
In combination, a strip of eraser material and a motor powered rotary erasing machine: said erasing machine having a chuck tube for receiving the strip of erasing material and having a collet chuck mechanism at the lower extremity of the chuck tube for releasably securing said eraser strip in immovable relation with said chuck tube and collet chuck mechanisms; and an elongated body of erasing material adapted to be received within said chuck tube of said erasing machine said body of erasing material being formed to define groove means along the entire length thereof, said groove means cooperating with said chuck tube and collet chuck mechanism to define air passage means between said chuck tube and collet mechanism and said strip of eraser material.
Claim 11
Dependent Claim
124 words
In combination, a strip of eraser material and a motor powered rotary erasing machine: said erasing machine having a chuck tube for receiving the strip of erasing material and having a collet chuck mechanism at the lower extremity of the chuck tube for releasably securing said eraser strip in immovable relation with said chuck tube and collet chuck mechanisms; and an elongated body of erasing material adapted to be received within said chuck tube of said erasing machine said body of erasing material being formed to define groove means along the entire length thereof, said groove means cooperating with said chuck tube and collet chuck mechanism to define air passage means between said chuck tube and collet mechanism and said strip of eraser material.
Claim 12
Dependent Claim
14 words
The combination of claim 8 wherein: said groove means is of arcuate cross-sectional configuration.
Claim 13
Dependent Claim
17 words
The subject matter of claim 9 wherein: said body of eraser material is of generally cylindrical configuration.
References Cited (Backward Citations)
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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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |