US3602934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient plug for cleaning pipelines
Assignee: Acushnet Co
•
Filing: 1969-07-31
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Granted: 1971-09-07
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Expires: 1989-07-31
Abstract
Abstract An improved pipe-cleaning resilient plug is provided which comprises an elastomeric shell with at least one opening therein and an elastomeric foam filler positioned within the shell.
Inventors
- 👤 Bryant B Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:20
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0553
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
106 words
An improved pipe-cleaning resilient plug which comprises an elastomeric tubular casing with a nosepiece across one end thereof and a solid wall across the second end thereof, an elastomeric foam filler positioned within said casing and at least one opening located in a wall of said casing other than in the solid wall across the second end thereof, and wherein the said elastomeric foam filler extends into the openings at least to the exterior surface of the wall of the casing in its uncompressed state whereby a pipe of the same interior diameter as the exterior diameter of the plug is contacted by the said filter.
Claim 2
Dependent Claim
106 words
An improved pipe-cleaning resilient plug which comprises an elastomeric tubular casing with a nosepiece across one end thereof and a solid wall across the second end thereof, an elastomeric foam filler positioned within said casing and at least one opening located in a wall of said casing other than in the solid wall across the second end thereof, and wherein the said elastomeric foam filler extends into the openings at least to the exterior surface of the wall of the casing in its uncompressed state whereby a pipe of the same interior diameter as the exterior diameter of the plug is contacted by the said filter.
Claim 3
Dependent Claim
14 words
A structure as specified in claim 1 in which the elastomeric material is polyurethane.
Claim 4
Dependent Claim
17 words
A structure as specified in claim 1 in which the nosepiece is rounded in a parabolic curve.
Claim 5
Dependent Claim
20 words
A structure as specified in claim 1 in which an opening is positioned in the front end of said nosepiece.
Claim 6
Dependent Claim
16 words
A structure as specified in claim 1 in which the casing is a molded unitary piece.
Claim 7
Dependent Claim
23 words
A structure as specified in claim 1 in which there Are a plurality of openings and in which the foam filler is porous.
Claim 8
Dependent Claim
90 words
An improved pipe-cleaning resilient plug which comprises an elastomeric tubular casing with a nosepiece across one end thereof and s solid wall across the second end thereof, an elastomeric foam filler positioned within said casing and at least one opening located in a wall of said casing other than in the solid wall across the second end thereof and wherein the central area of the said foam filler and solid wall is recessed to provide an annular flange positioned around the periphery of the said second end of said casing.
Claim 9
Dependent Claim
90 words
An improved pipe-cleaning resilient plug which comprises an elastomeric tubular casing with a nosepiece across one end thereof and s solid wall across the second end thereof, an elastomeric foam filler positioned within said casing and at least one opening located in a wall of said casing other than in the solid wall across the second end thereof and wherein the central area of the said foam filler and solid wall is recessed to provide an annular flange positioned around the periphery of the said second end of said casing.
Claim 10
Dependent Claim
70 words
An improved pipe-cleaning resilient plug which comprises an elastomeric tubular casing with an essentially cylindrical outer wall, a nosepiece across one end thereof and a solid wall across the second end thereof, an elastomeric foam filler positioned within said casing and at least one opening located in the wall of said casing and at least one opening in said nosepiece to add to the flexibility and maneuverability of the plug.
Claim 11
Dependent Claim
70 words
An improved pipe-cleaning resilient plug which comprises an elastomeric tubular casing with an essentially cylindrical outer wall, a nosepiece across one end thereof and a solid wall across the second end thereof, an elastomeric foam filler positioned within said casing and at least one opening located in the wall of said casing and at least one opening in said nosepiece to add to the flexibility and maneuverability of the plug.
Claim 12
Dependent Claim
67 words
An improved pipe-cleaning resilient plug which comprises an elastomeric tubular casing with a rounded nosepiece across one end thereof said nosepiece having at least one opening therein and a solid wall across the second end thereof, an elastomeric foam filler positioned within said casing and at least one opening located in a wall of said casing other than in the solid wall across the second end thereof.
Claim 13
Dependent Claim
67 words
An improved pipe-cleaning resilient plug which comprises an elastomeric tubular casing with a rounded nosepiece across one end thereof said nosepiece having at least one opening therein and a solid wall across the second end thereof, an elastomeric foam filler positioned within said casing and at least one opening located in a wall of said casing other than in the solid wall across the second end thereof.
References Cited (Backward Citations)
US3389417A
Cited
US3403418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |