US3604040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning tool for pipe and fittings
Assignee: Individual
•
Filing: 1969-03-11
•
Granted: 1971-09-14
•
Expires: 1989-03-11
Abstract
Abstract A power-driven rotary tool has a chuck that cooperates with a tool shaft having a long spiral groove. The tool is drawn into the power-driven chuck and then it is rotated. Reverse relative rotation of the tool causes it to be ejected. The preferred tool is a wire brush having bristles held between twisted wires that form the tool shaft and provide spiral grooves.
Inventors
- 👤 Richard L Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:42
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/021; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17931
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
175 words
A power-driven rotary tool, including a chuck, drive means for rotating said chuck in a prescribed direction, and a rotary tool having an axial shaft receivable in said chuck, said shaft being formed of twisted wires forming plural spiral grooves in the shaft having a steep pitch many times longer than that of machine screws, and said chuck having a formation cooperable with a said spiral groove in said shaft effective to advance the shaft into the chuck or out of the chuck in dependence on the relative rotation of the shaft and the chuck, the direction of said grooves being related to the direction of rotation of the chuck by said drive means so that, when the shaft is not rotating and is inserted into the chuck while the chuck is rotating in said prescribed direction, the shaft is drawn into the chuck, said chuck and said shaft including cooperating stop means for limiting the advance of the shaft into the chuck and for thereafter causing the chuck to enforce rotation of the tool.
Claim 2
Dependent Claim
175 words
A power-driven rotary tool, including a chuck, drive means for rotating said chuck in a prescribed direction, and a rotary tool having an axial shaft receivable in said chuck, said shaft being formed of twisted wires forming plural spiral grooves in the shaft having a steep pitch many times longer than that of machine screws, and said chuck having a formation cooperable with a said spiral groove in said shaft effective to advance the shaft into the chuck or out of the chuck in dependence on the relative rotation of the shaft and the chuck, the direction of said grooves being related to the direction of rotation of the chuck by said drive means so that, when the shaft is not rotating and is inserted into the chuck while the chuck is rotating in said prescribed direction, the shaft is drawn into the chuck, said chuck and said shaft including cooperating stop means for limiting the advance of the shaft into the chuck and for thereafter causing the chuck to enforce rotation of the tool.
Claim 3
Dependent Claim
24 words
A power-driven tool in accordance with claim 1, wherein said tool is a wire brush having transverse wire bristles retained by said twisted wires.
Claim 4
Dependent Claim
48 words
A power-driven tool in accordance with claim 1, wherein said chuck has a cylindrical bore whose diameter slidably receives said twisted wires and wherein said formation is a generally conical projection extending into the bore for cooperation as aforesaid with the spiral grooves formed by said twisted wires.
Claim 5
Dependent Claim
67 words
A power-driven tool in accordance with claim 1, wherein the speed on rotation of the chuck and the diameter of the tool and the pitch of the spiral groove are proportioned to enable the shaft to be withdrawn from the chuck by a person making a quick manual wiping motion against the tool so as to rotate the tool faster than its rotation by said drive means.
References Cited (Backward Citations)
US874958A
Cited
US1575062A
Cited
US2469821A
Cited
US2510376A
Cited
US3251085A
Cited
US3251086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |