Patent US3578307A successfully refreshed from Google Patents.
US3578307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe wrench construction
Assignee: Individual
•
Filing: 1969-05-06
•
Granted: 1971-05-11
•
Expires: 1989-05-06
Abstract
Abstract A wrench construction including an elongated handle having an endwise facing stationary jaw at one end and defining a short sleeve disposed to one side of the stationary jaw. An elongated threaded shank is slidably received through the sleeve and includes a second laterally outwardly projecting movable jaw facing toward, opposing and aligned with the stationary jaw. A thrust nut is threaded on the shank and opposes the sleeve end remote from the movable jaw. Further, an overcenter lever assembly is connected between the handle and the nut for shifting the shank relative to the handle.
Inventors
- 👤 Coy B Lock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:27
CPC Classifications
B; B25; B25B; B25B23/00; B25B13/00; B25B13/10; B25B13/12; B25B13/16; B25B13/18; B25B13/48; B25B13/50; B25B13/5008; B25B13/5016; B25B13/5025; B25B13/5041; B25B13/5058
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A wrench construction including an elongated handle provided with a first endwise outwardly facing stationary jaw at one end and defining a short sleeve bore disposed to one side of said stationary jaw, an elongated threaded shank slidably disposed through said sleeve bore and including a second laterally outwardly projecting jaw aligned with and opposing said first jaw, a threaded thrust nut threaded on said shank and opposing the portions of said handle defining the end of the sleeve bore remote from the second jaw, a lever pivotally supported at one end from the end portion of the handle remote from the first jaw, and an elongated connecting link assembly pivotally secured at one end to the lever intermediate its opposite ends and connected to said nut at its other end for rotation of the nut relative to the link assembly and against axial shifting of the nut relative to the link assembly.
Claim 2
Dependent Claim
153 words
A wrench construction including an elongated handle provided with a first endwise outwardly facing stationary jaw at one end and defining a short sleeve bore disposed to one side of said stationary jaw, an elongated threaded shank slidably disposed through said sleeve bore and including a second laterally outwardly projecting jaw aligned with and opposing said first jaw, a threaded thrust nut threaded on said shank and opposing the portions of said handle defining the end of the sleeve bore remote from the second jaw, a lever pivotally supported at one end from the end portion of the handle remote from the first jaw, and an elongated connecting link assembly pivotally secured at one end to the lever intermediate its opposite ends and connected to said nut at its other end for rotation of the nut relative to the link assembly and against axial shifting of the nut relative to the link assembly.
Claim 3
Dependent Claim
67 words
The combination of claim 1 wherein the portion of said shank engaged by said nut extends along and is spaced slightly from an opposing side edge of said handle sufficient to provide minimal clearance between said side edge and the opposing surfaces of said nut, said nut having a thrust member journaled thereon, said other end of said link assembly being pivotally secured to said thrust member.
Claim 4
Dependent Claim
69 words
The combination of claim 2 wherein said nut includes a circumferential groove, said thrust member ocmprising a half-circular ring member seated in said groove, the midportion of said half-circular ring member closely opposing said side edge with the clearance between said side edge and said midportion being insufficient to enable sufficient radial outward movement of said ring member from said nut to withdraw the ring member from said groove.
Claim 5
Dependent Claim
35 words
The combination of claim 3 wherein the opposite ends of said ring member include oppositely outwardly directed pin portions upon which transversely spaced portions of said other end of said link assembly are oscillatably supported.
Claim 6
Dependent Claim
139 words
The combination of claim 4 wherein said transversely spaced portions of said other end of said link assembly comprise corresponding ends of a pair of elongated links comprising said link assembly between which said nut, said shank, and the adjacent portions of said lever are received. 6 The combination of claim 1 wherein the portion of said shank engaged by said nut extends along and is spaced slightly from an opposing side edge of said handle sufficient to provide minimal clearance between said side edge and the opposing surfaces of said nut, said nut having a thrust member journaled thereon, said other end of said link assembly being pivotally secured to said thrust member, said lever being Swingable past a center position during its movement relative to said handle effecting movement of said second jaw toward said first jaw.
Claim 7
Dependent Claim
48 words
The combination of claim 1 including a baseplate adapted to be secured to a suitable support surface, a pair of upwardly convergent leg assemblies secured at their lower ends to said baseplate, said handle having longitudinally spaced portions thereof secured to the upper ends of said leg assemblies.
Claim 8
Dependent Claim
33 words
The combination of claim 7 wherein said leg assemblies each include a pair of upwardly convergent leg members independently secured, at their upper and lower ends to said handle and base plate, respectively.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |