US3695129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cutting a block of plastic material
Assignee: Calsilox SA
•
Filing: 1970-06-22
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Granted: 1972-10-03
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Expires: 1990-06-22
Abstract
Abstract An apparatus for cutting a block of material in a plastic state, more particularly light weight concrete, grooved at the top, wherein a top crust cut loose from the block is removed by suction. If the crust is cut loose from the block by a horizontal cutting wire, and the grooves are cut away by means of blades, the material of the grooves remains behind on the top surface of the block, when the crust is removed by suction. The material of the crust and the groove can be removed simultaneously by suction if the crust is cut loose along the profile of the grooves.
Inventors
- 👤 Berend Vrijma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:28
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/08; B28B11/0863; B28B11/14; B28B11/145; B28B17/00; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/501148; Y10T409/502624; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2183; Y10T83/2185; Y10T83/869; Y10T83/8821; Y10T83/8822; Y10T83/8828; Y10T83/8831
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
241 words
An apparatus for cutting a block of material in the plastic state, such as lightweight concrete which comprises, a bed for supporting said block, a cutting frame cooperatively associated with said bed such that the cutting frame and block are adapted to move relative to each other so that the frame effectively passes over and along the sides of said block from one end to the other, said cutting frame having a horizontal member disposed above the top of and transverse to said block, and side members depending downwardly therefrom along opposite sides of said block when a block is supported on said bed, crust-cutting means supported by and along said horizontal member transverse to said block for removing the upper crust of said bloCk, said crust-cutting means comprising an array of interconnected horizontal and groove-cutting blades arranged to intercept and cut through the block below the upper crust thereof as the cutting frame and block are caused to more relative to each other such that the top surface of the block after cutting and removal of the crust has cut into it grooves spaced transversely of said block and running longitudinally thereof, and a suction cap arranged to cover the top of said block for removing by suction the top crust severed by said crustcutting means, said cap having retaining means against which the severed crust is held by suction during the removal thereof from the top of the block.
Claim 2
Independent Claim
241 words
An apparatus for cutting a block of material in the plastic state, such as lightweight concrete which comprises, a bed for supporting said block, a cutting frame cooperatively associated with said bed such that the cutting frame and block are adapted to move relative to each other so that the frame effectively passes over and along the sides of said block from one end to the other, said cutting frame having a horizontal member disposed above the top of and transverse to said block, and side members depending downwardly therefrom along opposite sides of said block when a block is supported on said bed, crust-cutting means supported by and along said horizontal member transverse to said block for removing the upper crust of said bloCk, said crust-cutting means comprising an array of interconnected horizontal and groove-cutting blades arranged to intercept and cut through the block below the upper crust thereof as the cutting frame and block are caused to more relative to each other such that the top surface of the block after cutting and removal of the crust has cut into it grooves spaced transversely of said block and running longitudinally thereof, and a suction cap arranged to cover the top of said block for removing by suction the top crust severed by said crustcutting means, said cap having retaining means against which the severed crust is held by suction during the removal thereof from the top of the block.
Claim 3
Dependent Claim
74 words
The cutting frame of claim 1, wherein said frame also has spaced cutting wires connected to said horizontal member and depending downwardly therefrom to tension means moveably coupled to spaced grooves in said bed disposed longitudinally thereof, such that as the frame and block are moved relative to each other, said wires cut the block into sections while the said wire-tensioning means move relatively along the grooves of the bed together with the frame.
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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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |