US3604591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick action plugging device
Assignee: D&S Plug Corp
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Filing: 1969-11-28
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Granted: 1971-09-14
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Expires: 1989-11-28
Abstract
Abstract In a plugging device, for example, a plugging device in which an expandible stopper is adapted to be engaged by an expander movable along the longitudinal axis of the stopper to expand the stopper axially, the stopper has a bearing portion at the closed end thereof against which the expander bears as the expander is moved along the longitudinal axis of the stopper and the stopper is expanded, and a washerlike member is disposed substantially perpendicular to the longitudinal axis of the stopper adjacent the open end thereof; the washerlike member has an inner and an outer periphery and includes a slotted portion arranged along the inner periphery thereof, the slotted portion directly communicating with the outside of the stopper at the open end and being mateable with the expander and adapted for rapid insertion and removal of the expander in cooperation with the slotted portion to rapidly expand and contract the stopper; and said washerlike member further includes a lockable portion for locking the stopper in the axially expanded position, whereby the expander inserted through the mateable portion expanding the stopper longitudinally can be retained in the stopper in the rapidly expanded position. The expander includes an axially extending portion adapted at one end to expand the plug by axial insertion within the plug, and the axially extending portion includes at the other end a portion having circumferentially arranged protrusions extending therefrom in a direction transverse to the axis of insertion, the protrusions being adapted to pass through the slotted portion of the washerlike member and to be positioned so as to retain the expander within the plug in the inserted and expanded position.
Inventors
- 👤 Harry Seltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:39
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
198 words
A plugging device comprising an expandible stopper having an open end and a closed end adapted to be engaged by an expander movable along the longitudinal axis of said stopper whereby said stopper is expanded axially, a bearing portion within said stopper at the closed end thereof against which said expander bears as said expander is moved along said longitudinal axis of said stopper and said stopper is expanded, and a washerlike member disposed substantially perpendicular to the longitudinal axis of said stopper adjacent the open end thereof, said washerlike member having an inner and an outer periphery and a slotted portion arranged along the inner periphery thereof, said slotted portion directly communicating with the outside of the stopper at the open end and being mateable with the expander and adapted for rapid insertion and removal of the expander in cooperation with the slotted portion to rapidly expand and contract the stopper, and said washerlike member having a lockable portion arranged along the inner periphery thereof for locking the stopper in the axially expanded position, whereby the expander inserted through the mateable portion expanding the stopper longitudinally can be retained in the stopper in the rapidly expanded position.
Claim 2
Dependent Claim
198 words
A plugging device comprising an expandible stopper having an open end and a closed end adapted to be engaged by an expander movable along the longitudinal axis of said stopper whereby said stopper is expanded axially, a bearing portion within said stopper at the closed end thereof against which said expander bears as said expander is moved along said longitudinal axis of said stopper and said stopper is expanded, and a washerlike member disposed substantially perpendicular to the longitudinal axis of said stopper adjacent the open end thereof, said washerlike member having an inner and an outer periphery and a slotted portion arranged along the inner periphery thereof, said slotted portion directly communicating with the outside of the stopper at the open end and being mateable with the expander and adapted for rapid insertion and removal of the expander in cooperation with the slotted portion to rapidly expand and contract the stopper, and said washerlike member having a lockable portion arranged along the inner periphery thereof for locking the stopper in the axially expanded position, whereby the expander inserted through the mateable portion expanding the stopper longitudinally can be retained in the stopper in the rapidly expanded position.
Claim 3
Dependent Claim
25 words
A plugging device in accordance with claim 1 wherein said bearing portion consists of the inner surface of the closed end of said expandible stopper.
Claim 4
Dependent Claim
27 words
A plugging device in accordance with claim 1 wherein said bearing portion is a bearing piece secured to said stopper at the closeD end of said stopper.
Claim 5
Dependent Claim
185 words
A plugging device in accordance with claim 1 wherein said washerlike member has an inner and an outer surface having nonslotted portions and further having slotted portions constituted by said slotted portion along said inner periphery extending therethrough, said stopper has an internal groove means in the inner surface thereof at said open end adjacent the inner periphery of said washerlike member, said washerlike member inner surface comprising said lockable portion and being cooperatively associated with said internal groove and said slotted portion, said internal groove means having portions adjacent said washerlike member inner surface nonslotted portions which do not directly communicate with the outside of the stopper and portions which directly communicate with said outside communicating slotted portion, said internal groove means being arranged along the inner periphery of said washerlike member in cooperating relationship with said outside communicating slotted portion, whereby when the expander is inserted through the outside communicating slotted portion and positioned in the internal groove portions not directly communicating with the outside of the stopper, the expander is locked in position and the stopper is removably detained in said position.
Claim 6
Dependent Claim
107 words
A plugging device in accordance with claim 1 wherein said lockable portion comprises an internal groove means having portions which do not directly communicate with the outside of the stopper and portions which directly communicate with said outside communicating slotted portion, said internal groove means being arranged along the inner periphery of said washerlike member in cooperating relationship with said outside communicating slotted portion, whereby when the expander is inserted through the outside communicating slotted portion and positioned in the internal groove portions not directly communicating with the outside of the stopper, the expander is locked in position and the stopper is removably retained in said position.
Claim 7
Dependent Claim
25 words
A plugging device in accordance with claim 5 wherein said internal groove means comprises a circumferential groove extending about the longitudinal axis of the stopper.
Claim 8
Dependent Claim
57 words
A plugging device in accordance with claim 5 wherein said outside communicating slotted portion and said internal groove means comprise a plurality of slots, each of said internal groove slots having a portion which does not directly communicate with the outside of the stopper and a portion which directly communicates with one of said outside communicating slots.
Claim 9
Dependent Claim
121 words
A plugging device in accordance with claim 1 wherein said plugging device includes an expander, said expander comprising a longitudinally axially extending insertable portion having a predetermined length greater than the internal longitudinal axial length of said stopper for expanding said stopper longitudinally when one end of said expander bears against said bearing portion, and a lockable portion at the other end of said insertable portion, said expander lockable portion having lockable means thereon adapted for insertion through said washer outside communicating slotted portion and engageable in said washer lockable portion to retain said expander within said stopper in the inserted position with said stopper in the fully expanded position hen said lockable means is positioned within said washer lockable portion.
Claim 10
Dependent Claim
70 words
A plugging device in accordance with claim 8 wherein said expander lockable portion includes a portion larger than said one end, said larger portion having an inwardly tapering portion which tapers toward said one end, said lockable means being protrusions disposed on said larger portion, and said stopper includes an inwardly tapered portion adjacent its open end mateable with said expander tapered portion to seat said expander in said stopper.
Claim 11
Dependent Claim
66 words
A plug expander device comprising an axially extending portion adapted at one end to expand an expandible plug by axial insertion within the plug, anD having at the other end circumferentially arranged protrusions extending therefrom in a direction transverse to the axis of insertion, said protrusions being adapted to be positioned so as to retain the expander within the plug in the inserted and expanded position.
Claim 12
Dependent Claim
66 words
A plug expander device comprising an axially extending portion adapted at one end to expand an expandible plug by axial insertion within the plug, anD having at the other end circumferentially arranged protrusions extending therefrom in a direction transverse to the axis of insertion, said protrusions being adapted to be positioned so as to retain the expander within the plug in the inserted and expanded position.
Claim 13
Dependent Claim
50 words
A plug expander device in accordance with claim 10 wherein said other end includes a circumferentially increased portion, said circumferentially increased portion having an inwardly tapering portion tapered toward said one end and being adapted to be seated in the plug, and said protrusions being disposed on said increased portion.
References Cited (Backward Citations)
US3180515A
Cited
US3504420A
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 |