Patent US2884768A successfully refreshed from Google Patents.
US3586202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plugging device
Assignee: Individual
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Filing: 1969-07-01
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Granted: 1971-06-22
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Expires: 1989-07-01
Abstract
Abstract An expansible plug device molded from flexible material. The plug is formed having an extensible neck in attachment with a right cylindrical shoulder portion. A washer is molded within the shoulder for reinforcement. The plug is adapted for insertion using a hand-actuated plunger tool. The tool is characterized in utilizing a fork-shaped plug mount cooperating with mated keyways situated within the plug shoulder and beneath the washer.
Inventors
- 👤 Ray F Shores
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:29
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; F16B21/08; F16B21/088; B; B25; B25B; B25B27/00; B25B27/0028
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
An expansible plug comprising: a. a shoulder portion having a planar rearward face; b. an expansible hollow neck portion formed integrally with said shoulder portion and axially aligned therewith perpendicularly to said planar rearward face; c. a passageway in axial alignment with said neck portion, communicating between said shoulder portion and the said hollow interior of the neck portion; d. a washer-shaped reinforcement member integrally molded within said shoulder portion, disposed therein parallel to the plane of said rearward face and situate so as to permit said passageway to communicate therethrough, and e. keyway means disposed within said shoulder portion.
Claim 2
Dependent Claim
100 words
An expansible plug comprising: a. a shoulder portion having a planar rearward face; b. an expansible hollow neck portion formed integrally with said shoulder portion and axially aligned therewith perpendicularly to said planar rearward face; c. a passageway in axial alignment with said neck portion, communicating between said shoulder portion and the said hollow interior of the neck portion; d. a washer-shaped reinforcement member integrally molded within said shoulder portion, disposed therein parallel to the plane of said rearward face and situate so as to permit said passageway to communicate therethrough, and e. keyway means disposed within said shoulder portion.
Claim 3
Dependent Claim
75 words
The expansible plug of claim 1 in which: a. said shoulder portion is formed as a right circular cylinder; b. said keyway means comprise at least one slot disposed within and passing through said shoulder, parallel with said rearward face and situate between said reinforcement member and said neck portion; and c. auxiliary plug means for insertion into said passageway from said rearward face so as to enclose the hollow internal portion of said plug.
Claim 4
Dependent Claim
67 words
The expansible plug of claim 1 in which; a. said shoulder portion is formed as a right circular cylinder; b. said keyway means are formed as at least two generally crescent-shaped slots extending axially inwardly perpendicularly from the plane of said shoulder portion rearward face; and c. said reinforcing member is formed having bayonet joint grooves disposed within said shoulder so as to communicate with said keyways.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |