Patent US3909904A successfully refreshed from Google Patents.
US3909904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal tool for spring type pipe hanger
Assignee: Tenneco Inc
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Filing: 1973-10-17
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Granted: 1975-10-07
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Expires: 1993-10-17
Abstract
Abstract A spring clip pipe hanger removal tool comprises a U-shaped member with ends to pry open the clip barbs, the ends having barb retaining means to prevent the clip from snapping back to the pipe.
Inventors
- 👤 Larry E Strunk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:05
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/14; B25B27/20; B25B27/205; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53613; Y10T29/5363
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
211 words
A tool for spreading the jaws of a snap-in spring clip or the like having a pair of resilient jaws holding a pipe or the like comprising a U-shaped member having a base and flexible side legs, said legs converging substantially toward each other, the tip ends of the legs being adapted to engage the surface of the pipe and be cammed apart on said surface upon application of force to said base and upon spreading apart to engage and spread apart said jaws to release said pipe, the length of the member being substantially greater than the cammed apart spacing of the tip ends and the width of the base being substantially wider than the distance between the tip ends of the legs and as wide as the cammed apart spacing between the tip ends whereby the member is adapted to receive the pipe inside the member between said legs upOn release of the pipe from said jaws, retaining means on the ends of said legs providing troughs having bottom surfaces receiving the ends of said jaws and side surfaces to restrain them from slipping sideways off the tool, said retaining means comprising sides on the legs folded to extend at substantially right angles to the plane of the legs.
Claim 2
Dependent Claim
211 words
A tool for spreading the jaws of a snap-in spring clip or the like having a pair of resilient jaws holding a pipe or the like comprising a U-shaped member having a base and flexible side legs, said legs converging substantially toward each other, the tip ends of the legs being adapted to engage the surface of the pipe and be cammed apart on said surface upon application of force to said base and upon spreading apart to engage and spread apart said jaws to release said pipe, the length of the member being substantially greater than the cammed apart spacing of the tip ends and the width of the base being substantially wider than the distance between the tip ends of the legs and as wide as the cammed apart spacing between the tip ends whereby the member is adapted to receive the pipe inside the member between said legs upOn release of the pipe from said jaws, retaining means on the ends of said legs providing troughs having bottom surfaces receiving the ends of said jaws and side surfaces to restrain them from slipping sideways off the tool, said retaining means comprising sides on the legs folded to extend at substantially right angles to the plane of the legs.
Claim 3
Dependent Claim
204 words
A tool for spreading the jaws of a snap-in spring clip or the like having a pair of resilient jaws holding a pipe or the like comprising a U-shaped member having a base and flexible side legs, said legs converging substantially toward each other, the tip ends of the legs being adapted to engage the surface of the pipe and be cammed apart on said surface upon application of force to said base and upon spreading apart to engage and spread apart said jaws to release said pipe, the length of the member being substantially greater than the cammed apart spacing of the tip ends and the width of the base being substantially wider than the distance between the tip ends of the legs and as wide as the cammed apart spacing between the tip ends whereby the member is adapted to receive the pipe inside the member between said legs upon release of the pipe from said jaws, retaining means on the ends of said legs providing troughs having bottom surfaces receiving the ends of said jaws and side surfaces to restrain them from slipping sideways off the tool, said retaining means comprising a U-shaped piece affixed to the end of each leg.
Claim 4
Dependent Claim
204 words
A tool for spreading the jaws of a snap-in spring clip or the like having a pair of resilient jaws holding a pipe or the like comprising a U-shaped member having a base and flexible side legs, said legs converging substantially toward each other, the tip ends of the legs being adapted to engage the surface of the pipe and be cammed apart on said surface upon application of force to said base and upon spreading apart to engage and spread apart said jaws to release said pipe, the length of the member being substantially greater than the cammed apart spacing of the tip ends and the width of the base being substantially wider than the distance between the tip ends of the legs and as wide as the cammed apart spacing between the tip ends whereby the member is adapted to receive the pipe inside the member between said legs upon release of the pipe from said jaws, retaining means on the ends of said legs providing troughs having bottom surfaces receiving the ends of said jaws and side surfaces to restrain them from slipping sideways off the tool, said retaining means comprising a U-shaped piece affixed to the end of each leg.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |