US3834215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable hydraulic strip sealer and cutter
Assignee: Willen Corp
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Filing: 1972-11-24
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Granted: 1974-09-10
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Expires: 1992-11-24
Abstract
Abstract A hydraulically operated tool operable to cut a steel strip and also operable to crimp a seal on the strip. A top blade is pivotally mounted to a bottom block with the cutting edge of the blade received by a groove in the top surface of the block. A second groove extends across the block for receiving and holding the strip during cutting. The distal ends of the blade and block have mating flat surfaces which are forced together to crimp a seal on the strip. In one embodiment, a pair of hydraulic cylinders are mounted to the block and are operable by a pair of handles to close the blade with respect to the block. In another embodiment, one hydraulic cylinder is mounted to the block whereas the second hydraulic cylinder is separate from the blade and block but is connected to the first hydraulic cylinder by a high pressure conduit.
Inventors
- 👤 L Lemley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:07
CPC Classifications
B; B23; B23D; B23D29/00; B23D29/02; B26; B26B; B26B17/00; B26B17/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
194 words
In a fluid operated tool fOr severing a strip and for crimping a seal, said tool including a lower member having an upper surface and an outer distal end, a top blade hingedly mounted to said lower member and having a cutting edge and an outer distal end, means mounted to said top blade and said lower member operable to move said cutting edge against said top surface of said lower member wherein the improvement comprises: said distal end of said lower member has a flat top surface and said distal end of said top blade has a flat bottom surface of greater width than said cutting edge, said means is operable to force said flat bottom surface against said flat top surface for crimping said seal and is operable to move said cutting edge against said upper surface for severing said strip; and said lower member has a longitudinally extending first groove which receives said cutting edge when said tool is in a closed position, said lower member has a second groove extending across said first groove, said second groove is sized to receive and hold said strip during severing of said strip.
Claim 2
Dependent Claim
194 words
In a fluid operated tool fOr severing a strip and for crimping a seal, said tool including a lower member having an upper surface and an outer distal end, a top blade hingedly mounted to said lower member and having a cutting edge and an outer distal end, means mounted to said top blade and said lower member operable to move said cutting edge against said top surface of said lower member wherein the improvement comprises: said distal end of said lower member has a flat top surface and said distal end of said top blade has a flat bottom surface of greater width than said cutting edge, said means is operable to force said flat bottom surface against said flat top surface for crimping said seal and is operable to move said cutting edge against said upper surface for severing said strip; and said lower member has a longitudinally extending first groove which receives said cutting edge when said tool is in a closed position, said lower member has a second groove extending across said first groove, said second groove is sized to receive and hold said strip during severing of said strip.
Claim 3
Dependent Claim
61 words
The tool of claim 1 wherein: said means includes a first hydraulic cylinder with a first piston connected to said blade and a second hydraulic cylinder in communication with said first cylinder, said means further includes a second piston movable within said second cylinder for application of fluid pressure to said first piston to close said blade on said lower member.
Claim 4
Dependent Claim
57 words
The tool of claim 2 wherein: said blade has an axis of pivotal motion and a rear portion extending behind said axis, said member has an adjustable projection mounted thereon beneath said rear portion and is vertically movable to contact said rear portion to limit upward movement of said cutting edge with respect to said lower member.
Claim 5
Dependent Claim
34 words
The tool of claim 3 wherein: said second groove has a semi-circular cross section whereas said first groove has a V-shaped cross section, said second groove extends perpendicularly to and across said first groove.
Claim 6
Dependent Claim
88 words
The tool of claim 4 wherein: said first cylinder is mounted on said lower member, said first piston has a rod extending upwardly from said first cylinder and connected to said rear portion of said blade, said means further includes spring means connected between said rear portion and said lower member operable to normally urge said rear portion toward said lower member and said cutting edge upwardly from said lower member but yieldable to allow said first piston to move said rear portion upwardly from said lower member.
Claim 7
Dependent Claim
72 words
The tool of claim 5 wherein: said second cylinder is mounted on said lower member and further comprising: a first handle fixedly mounted to said lower member and a second handle pivotally mounted to said lower member at said axis, said second piston has a rod connected to said second handle, said second cylinder opens into said first cylinder with a valve mounted in said first cylinder to control flow of fluid.
Claim 8
Dependent Claim
50 words
The tool of claim 5 wherein: said second cylinder is separate from said lower member and said blade but is connected to said first cylinder by a high pressure conduit, said second cylinder has a foot pedal mounted thereto with said second piston having a rod connected to said pedal.
Claim 9
Dependent Claim
57 words
The tool of claim 1 wherein: said blade has an axis of pivotal motion and a rear portion extending behind said axis, said member has an adjustable projection mounted thereon beneath said rear portion and is vertically movable to contact said rear portion to limit upward movement of said cutting edge with respect to said lower member.
Claim 10
Dependent Claim
34 words
The tool of claim 1 wherein: said second groove has a semi-circular cross section whereas said first groove has a V-shaped cross section, said second groove extends perpendicularly to and across said first groove.
Claim 11
Dependent Claim
195 words
The tool of claim 1 wherein: said means includes a first hydraulic cylinder with a first piston connected to said blade and a second hydraulic cylinder in communication with said first cylinder, said means further includes a second piston movable within said second cylinder for application of fluid pressure to said first piston to close said blade on said lower member; said blade has an axis of pivotal motion and a rear portion extending behind said axis, said member has an adjustable projection mounted thereon beneath said rear portion and is vertically movable to contact said rear portion to limit upward movement of said cutting edge with respect to said lower member; and said first cylinder is mounted on said lower member, said first piston has a rod extending upwardly from said first cylinder and connected to said rear portion of said blade, said means further includes spring means connected between said rear portion and said lower member operable to normally urge said rear portion toward said lower member and said cutting edge upwardly from said lower member but yieldable to allow said first piston to move said rear portion upwardly from said lower member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |