Patent US4944081A successfully refreshed from Google Patents.
US4944081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing removal tool
Assignee: Mobil Oil AS
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Filing: 1989-06-15
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Granted: 1990-07-31
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Expires: 2009-06-15
Abstract
Abstract A tool for the removal of soft packing material from fluidic equipment. The packing removal tool of the present invention comprises a shaft having first and second ends, the first end terminating in a substantially pointed tip, at least one barbed lever, pivotally mounted to said first end of said shaft and means for urging said barbed lever outward from said shaft.
Inventors
- 👤 Mark S. Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:41
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/06; B25B27/0028; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53657
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
A packing removal tool comprising: (a) a hollow shaft having first and second ends, said first end terminating in a substantially pointed tip having a screw-like surface; (b) at least two barbed levers pivotally mounted to said first end of said shaft; (c) means for urging said barbed levers outward from said shaft, said urging means comprising a substantially conical structure; (d) means for actuating said urging means contained within said shaft, said actuating means comprising a spring loaded rod having first and second ends, said substantially conical structure affixed to said first end of said rod; and (e) a handle affixed to said second end of said rod.
Claim 2
Dependent Claim
109 words
A packing removal tool comprising: (a) a hollow shaft having first and second ends, said first end terminating in a substantially pointed tip having a screw-like surface; (b) at least two barbed levers pivotally mounted to said first end of said shaft; (c) means for urging said barbed levers outward from said shaft, said urging means comprising a substantially conical structure; (d) means for actuating said urging means contained within said shaft, said actuating means comprising a spring loaded rod having first and second ends, said substantially conical structure affixed to said first end of said rod; and (e) a handle affixed to said second end of said rod.
Claim 3
Dependent Claim
14 words
The packing removal tool of claim 1, wherein said barbed levers are normally retracted.
Claim 4
Dependent Claim
19 words
The packing removal tool of claim 2, further comprising a grip affixed to said second end of said shaft.
References Cited (Backward Citations)
US1458076A
Cited
US1638494A
Cited
US2809059A
Cited
US3654686A
Cited
US4291910A
Cited
US4330917A
Cited
US4377956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |