US3946459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelled pipe cleaner
Assignee: Lipe Rollway Corp
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Filing: 1974-07-19
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Granted: 1976-03-30
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Expires: 1994-07-19
Abstract
Abstract A self-propelled pipe cleaner uses a body shaped to conform to the inside of a pipe with the axial extent of the body covered with a bristle pile material extending outward from the body to engage the inside of the pipe. The pile has resilient bristles uniformly inclined rearwardly relative to a forward direction of motion of the body. A vibrator is mounted within the body and energized for vibrating the body reciprocally and axially so the bristles engaging the inside of the pipe move the cleaner forward through the pipe for cleaning the pipe.
Inventors
- 👤 Jack W. Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:49
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/049; B08B9/0495; B08B9/053; B08B9/055; B08B9/0558
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
162 words
A self-propelled pipe cleaner comprising: a. a body having an axial extent shaped to conform to the inside of said pipe and to have a predetermined uniform clearance around said inside of said pipe; b. pile material substantially covering said axial extent of said body and extending outward from said body far enough to engage the inside of said pipe and support said body within said pipe; c. said pile material having a multitude of resilient resin bristles of uniform length uniformly inclined from a plane transversely perpendicular to said axial extent of said body rearwardly relative to a forward direction of motion of said cleaner; d. a vibrator mounted within said axial extent of said body; and e. means for energizing said vibrator to vibrate said body reciprocally in the direction of said axial extent of said body so said bristles engaging said inside of said pipe move said cleaner in said forward direction through said pipe for cleaning said pipe.
Claim 2
Dependent Claim
162 words
A self-propelled pipe cleaner comprising: a. a body having an axial extent shaped to conform to the inside of said pipe and to have a predetermined uniform clearance around said inside of said pipe; b. pile material substantially covering said axial extent of said body and extending outward from said body far enough to engage the inside of said pipe and support said body within said pipe; c. said pile material having a multitude of resilient resin bristles of uniform length uniformly inclined from a plane transversely perpendicular to said axial extent of said body rearwardly relative to a forward direction of motion of said cleaner; d. a vibrator mounted within said axial extent of said body; and e. means for energizing said vibrator to vibrate said body reciprocally in the direction of said axial extent of said body so said bristles engaging said inside of said pipe move said cleaner in said forward direction through said pipe for cleaning said pipe.
Claim 3
Dependent Claim
38 words
The cleaner of claim 1 wherein said pipe and said axial extent of said body are generally cylindrical and said bristles are inclined relative to the axis of said body for rotating said body as said cleaner advances.
Claim 4
Dependent Claim
24 words
The cleaner of claim 1 including a spray nozzle mounted on said body to direct a liquid spray onto said inside of said pipe.
Claim 5
Dependent Claim
31 words
The cleaner of claim 3 including a liquid supply outside said pipe and a flexible conduit extending from said liquid supply to said cleaner to conduct said liquid to said nozzle.
Claim 6
Dependent Claim
35 words
The cleaner of claim 1 including a vacuum nozzle mounted on said body to be near said inside of said pipe and vacuum means for operating said nozzle to clean said inside of said pipe.
Claim 7
Dependent Claim
29 words
The cleaner of claim 5 wherein said vacuum means includes a vacuum source outside said pipe and a flexible conduit extending from said vacuum source to said vacuum nozzle.
Claim 8
Dependent Claim
33 words
The cleaner of claim 1 wherein said body is radially collapsible and a cable extending rearwardly of said cleaner is operable for collapsing said body for rearwardly withdrawing said body from said pipe.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |