US4054984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for joining and separating plastic pipe joints
Assignee: Individual
•
Filing: 1976-12-30
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Granted: 1977-10-25
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Expires: 1996-12-30
Abstract
Abstract A tool for joining and separating plastic pipe and their fittings employs a pair of clamps which are secured adjacent the ends of the pipe sections. The clamps in turn are slidable on a frame and operated by a toggle-type linkage which moves the clamps and pipe sections and fittings axially toward or away from each other.
Inventors
- 👤 Dorothy P. Ball
- 👤 Charles E. Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:25
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/10; F; F16; F16L; F16L1/00; F16L1/024; F16L1/06; F16L1/09; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5367; Y10T29/53678; Y10T29/53796; Y10T29/53848
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
201 words
A tool for joining or separating plastic pipe sections comprising: an open, generally planar frame bounded by perimeter defining members including a rectilinear member; a pair of clamp members attached to and slidable toward and away from each other on the rectilinear frame member, each of the clamp members having means to releasable secure pipe sections thereto outside of the frame perimeter but in axial alignment with each other and parallel to the rectilinear frame member; and a toggle linkage, the toggle linkage including a pair of toggle bars pivotally connected at corresponding ends to respective ones of the clamp members and at their other corresponding ends to opposite ends of a toggle block, the toggle bars and block being disposed within the frame perimeter and all of said pivotal connections providing for movement of the toggle bars and block in the plane of the frame, the toggle block having an internally threaded bore between said pivotal connections thereto whose axis is normal to the rectilinear frame member and intersects the same between the clamp members, and an externally threaded crankshaft rotatably carried in the frame and located against axial movement relative thereto, the shaft threadedly engaging the toggle block bore.
Claim 2
Dependent Claim
201 words
A tool for joining or separating plastic pipe sections comprising: an open, generally planar frame bounded by perimeter defining members including a rectilinear member; a pair of clamp members attached to and slidable toward and away from each other on the rectilinear frame member, each of the clamp members having means to releasable secure pipe sections thereto outside of the frame perimeter but in axial alignment with each other and parallel to the rectilinear frame member; and a toggle linkage, the toggle linkage including a pair of toggle bars pivotally connected at corresponding ends to respective ones of the clamp members and at their other corresponding ends to opposite ends of a toggle block, the toggle bars and block being disposed within the frame perimeter and all of said pivotal connections providing for movement of the toggle bars and block in the plane of the frame, the toggle block having an internally threaded bore between said pivotal connections thereto whose axis is normal to the rectilinear frame member and intersects the same between the clamp members, and an externally threaded crankshaft rotatably carried in the frame and located against axial movement relative thereto, the shaft threadedly engaging the toggle block bore.
Claim 3
Dependent Claim
48 words
The tool of claim 1 wherein each clamp member comprises a clamp block having a bore therethrough slidably receiving the rectilinear frame member, the block including a pipe seat outside of the frame perimeter, the seat having a longitudinally extending V-shaped section parallel to the rectilinear frame member.
Claim 4
Dependent Claim
79 words
The tool of claim 2 wherein said releasable means for each clamp member comprises a length of chain, one end of the chain being adjustably secured to retaining means disposed upon one longitudinal side wall of the clamp block and laterally offset from the plane of the frame, the chain being passable therefrom transversely across the pipe seat and securable at its other end to chain tightening means disposed on an opposite longitudinal side wall of the clamp block.
Claim 5
Dependent Claim
44 words
The tool of claim 3 wherein the chain is of the open link type and said retaining means comprises a hook member engagable within a selected link of the chain, the hook member including adjustable spring means providing for resilient tension upon the chain.
Claim 6
Dependent Claim
77 words
The tool of claim 4 wherein the chain tightening means comprises an over-center type mechanism including a U-shaped member pivoting at its outer ends on a bracket carried by said opposite clamp block side wall and about an axis parallel to the rectilinear frame member, said other chain end being fixed to the U-shaped member intermediate said pivot axis thereof and the yoked end of the U-shaped member, and an operating handle secured to said yoked end.
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) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |