Patent US3747448A successfully refreshed from Google Patents.
US3747448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating cutting apparatus
Assignee: Individual
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Filing: 1971-12-29
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Granted: 1973-07-24
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Expires: 1991-12-29
Abstract
Abstract A reciprocating cutting apparatus particularly suited for cutting bulk materials, consisting of an elongated longitudinally tensioned cutting blade disposed across a material carriage, and coupled at one end to a reciprocating power source. The blade is tensioned against sagging so the bulk material, such as honeycomb structures, can be sliced at even depths across its entire width. The reciprocating power source moves the cutting blade not only transversely with respect to the movement of the material, but also longitudinally in and out as the material is cut.
Inventors
- 👤 A Carbone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:59
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/01; B26D1/04; B26D1/06; B26D1/10; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0267; Y10T83/0296; Y10T83/647; Y10T83/6584; Y10T83/6592; Y10T83/6593; Y10T83/6608; Y10T83/6614; Y10T83/6616; Y10T83/6617; Y10T83/687; Y10T83/7015; Y10T83/702; Y10T83/869; Y10T83/8696
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
225 words
An apparatus for cutting bulk material to a desired thickness, comprising: a housing having a movable carriage for supporting the bulk material; a pair of spaced-apart parallel shafts pivotably supported in a plane perpendicular to said housing; a pair of levers, each of which is secured about one of said parallel shafts, said levers containing brackets on their forward portions, and wherein one of said levers includes an extending slot; a sawblade pivotably disposed between the brackets so as to be parallel to the movable carriage for cutting the advancing bulk material; a threaded torsion bar pivotably disposed on the rearward portion of said links for tensioning said blade; driving means having an eccentric pin for engaging the extending slot of one of said levers, so that when said pin revolves, the extending slot oscillates said parallel shafts allowing said blade to reciprocate and cut into and out of the material, hydraulic means for advancing the movable carriage towards said blade; a weighted roller slidably supported in front of said blade for maintaining the bulk material while it is being cut; and means in each of said levers for frictionally clamping each of said levers to one of said parallel shafts so that said blade may be positioned vertically with respect to the movable carriage thereby allowing the material to be cut at different depths.
Claim 2
Independent Claim
225 words
An apparatus for cutting bulk material to a desired thickness, comprising: a housing having a movable carriage for supporting the bulk material; a pair of spaced-apart parallel shafts pivotably supported in a plane perpendicular to said housing; a pair of levers, each of which is secured about one of said parallel shafts, said levers containing brackets on their forward portions, and wherein one of said levers includes an extending slot; a sawblade pivotably disposed between the brackets so as to be parallel to the movable carriage for cutting the advancing bulk material; a threaded torsion bar pivotably disposed on the rearward portion of said links for tensioning said blade; driving means having an eccentric pin for engaging the extending slot of one of said levers, so that when said pin revolves, the extending slot oscillates said parallel shafts allowing said blade to reciprocate and cut into and out of the material, hydraulic means for advancing the movable carriage towards said blade; a weighted roller slidably supported in front of said blade for maintaining the bulk material while it is being cut; and means in each of said levers for frictionally clamping each of said levers to one of said parallel shafts so that said blade may be positioned vertically with respect to the movable carriage thereby allowing the material to be cut at different depths.
Claim 3
Dependent Claim
63 words
The apparatus as recited in claim 1, wherein said driving means includes an electric motor, and a right angle gear reduction box having its input coupled to the electric motor and its output connected to said eccentric pin so that as rotational power is supplied to the gear box, said pin revolves to oscillate said levers providing the cutting motion to said sawblade.
Claim 4
Dependent Claim
31 words
The apparatus as recited in claim 2, wherein said means in each of said levers comprises a screw engaging each of said levers for clamping said levers onto said parallel shafts.
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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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |