Patent US3603190A successfully refreshed from Google Patents.
US3603190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary plate-slitting shear
Assignee: United Engineering and Foundry Co
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Filing: 1969-08-21
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Granted: 1971-09-07
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Expires: 1989-08-21
Abstract
Abstract The present disclosure relates to a rotary blade slitting shear of the type used in the steel industry to divide strip, sheets, and plate into narrower workpieces. The shear comprises two elongated heads adapted to rotatably carry driving shafts to the ends of which are connected cooperating slitting knives. The heads actually are pivotally supported in which the points of pivots serve also as eccentrics which are driven so that the upper knife can be adjusted relative to the lower knife in a vertical plane. The upper knife is also adjustable axially of its drive shaft, for which reason there is provided a driven sleeve and a motor for moving the sleeve axially. The entire shear is adapted to be raised and lowered to properly position the knives relative to the workpiece to be slit.
Inventors
- 👤 George P Kollen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:49
CPC Classifications
B; B23; B23D; B23D19/00; B23D19/04; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7809; Y10T83/7822; Y10T83/7826; Y10T83/783; Y10T83/7843
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
98 words
A shear comprising: first and second knife frames, first and second driven shafts rotatably supported by said first and second frames, respectively, knives secured to the one end of each of said shafts and arranged to cooperate together to shear striplike material fed between the knives, means for driving said first and second shafts, an eccentric means for pivotally supporting one of said frames in a manner to allow the supported frame and its knife to be displaced towards and way from the other frame and its knife, and means for causing said displacement of said one frame.
Claim 2
Dependent Claim
98 words
A shear comprising: first and second knife frames, first and second driven shafts rotatably supported by said first and second frames, respectively, knives secured to the one end of each of said shafts and arranged to cooperate together to shear striplike material fed between the knives, means for driving said first and second shafts, an eccentric means for pivotally supporting one of said frames in a manner to allow the supported frame and its knife to be displaced towards and way from the other frame and its knife, and means for causing said displacement of said one frame.
Claim 3
Dependent Claim
72 words
A shear according to claim 1 wherein said first and second shafts overhang one end of their respective frames and including means for mounting said knives on said overhanging ends, said eccentric means comprising a pair of spaced-apart eccentrics having their axes in a common plane, and said means for causing said displacement including means for driving said eccentrics in the same rotational direction to cause a pivoting of said one frame.
Claim 4
Dependent Claim
23 words
In a shear according to claim 2 wherein said frames and eccentrics constitute four links and which are interconnected to form a parallelogram.
Claim 5
Dependent Claim
35 words
In a shear according to claim 2 including a gear mounted on each of said eccentrics, a pinion intermeshing with said gears, and wherein said means for driving said eccentrics is connected to said pinion.
Claim 6
Dependent Claim
48 words
In a shear according to claim 2 wherein said one frame comprises the upper frame of said shear and the other frame comprises the lower frame thereof, and means associated with said lower frame for causing a vertical displacement of said lower and upper frames as a unit.
Claim 7
Dependent Claim
40 words
In a shear according to claim 5 wherein said means for causing vertical displacement of said frames as a unit comprises a second pair of eccentrics engageable with said lower frame, and means for rotating said second pair of eccentrics.
Claim 8
Dependent Claim
61 words
In a shear according to claim 5, including two pairs of wheels secured to said lower frame, a pair of tracks engaged by said wheels and allowing the lower and upper frames as a unit to move horizontally in a direction towards and away from one of the edges of the striplike material, and means for moving said lower frame horizontally.
Claim 9
Dependent Claim
50 words
In a shear according to claim 5, including means for displacing one of said driven shafts in a direction parallel to its axis so as to vary the spacing between said knives, and said means comprising a drive means and including a threaded member secured to said one driven shaft.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |