Patent US4085176A successfully refreshed from Google Patents.
US4085176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing non-slip pavement blocks
Assignee: Japan Non-Slip Pavement Co Inc
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Filing: 1974-03-04
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Granted: 1978-04-18
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Expires: 1994-03-04
Abstract
Abstract This invention relates to a method and apparatus for manufacturing pavement blocks and the product resulting therefrom in which said blocks have rubber tips projecting from the surfaces thereof, and includes inserting a perforated plate and introducing projection elements into the perforation and against the base plate, thereafter introducing filler material, compressing the ingredients, removing the compressed unit from, including the base, the frame and thereafter removing the base plate and perforated plate.
Inventors
- 👤 Fukuzo Nakayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:30
CPC Classifications
E; E01; E01C; E01C5/00; E01C5/22; E01C5/226; B; B28; B28B; B28B1/00; B28B1/14; B28B1/16; B28B23/00; Y; Y10; Y10S; Y10S264/00; Y10S264/43
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
172 words
A method for producing non-slip pavement blocks, comprising: (a) providing a plate of predetermined thickness containing a plurality of perforations therein; (b) placing the perforated plate on a base plate of a mold comprised of side frame elements forming an enclosure with one end thereof covered by said base plate; (c) inserting projection elements in the perforations and against the base plate such that said elements extend above the surface of said perforated plate, said projection elements being disposed on a wire net in a pattern corresponding to the perforations in the plate; (d) introducing a mixture capable of solidificaton through the open end of said mold frame over, around and covering the exposed portions of the projections and the perforated plate; (e) compressing the ingredients in the mold against the base plate, and allowing solidification; (f) removing from the mold frame the compacted solidified ingredients as a unit along with the base plate; (g) removing the base plate and stripping the perforated plate from the solidified ingredients by peeling it away.
Claim 2
Independent Claim
172 words
A method for producing non-slip pavement blocks, comprising: (a) providing a plate of predetermined thickness containing a plurality of perforations therein; (b) placing the perforated plate on a base plate of a mold comprised of side frame elements forming an enclosure with one end thereof covered by said base plate; (c) inserting projection elements in the perforations and against the base plate such that said elements extend above the surface of said perforated plate, said projection elements being disposed on a wire net in a pattern corresponding to the perforations in the plate; (d) introducing a mixture capable of solidificaton through the open end of said mold frame over, around and covering the exposed portions of the projections and the perforated plate; (e) compressing the ingredients in the mold against the base plate, and allowing solidification; (f) removing from the mold frame the compacted solidified ingredients as a unit along with the base plate; (g) removing the base plate and stripping the perforated plate from the solidified ingredients by peeling it away.
Claim 3
Independent Claim
181 words
A method for producing non-slip pavement blocks, comprising: (a) providing a plate of predetermined thickness containing a plurality of perforations therein, with said perforations disposed in a predetermined pattern; (b) placing the perforated plate on a base plate of a mold comprises of side frame elements forming an enclosure with one end thereof covered by said base plate; (c) inserting projection elements in the perforations and against the base plate such that said elements extend above the surface of said perforated plate, said projection elements being disposed on a wire net in a pattern corresponding to the perforations in the plate; (d) introducing a hydraulically settable mixture capable of solidifiction through the open end of said mold frame over, around and covering the projections and the perforated plate; (e) compressing the ingredients in the mold against the base plate, and allowing solidification; (f) removing from the mold frame the compacted solidified ingredients as a unit along with the base plate; (g) subjecting the unit to steam treatment for a predetermined time; (h) removing the base plate and stripping the perforated plate.
Claim 4
Independent Claim
181 words
A method for producing non-slip pavement blocks, comprising: (a) providing a plate of predetermined thickness containing a plurality of perforations therein, with said perforations disposed in a predetermined pattern; (b) placing the perforated plate on a base plate of a mold comprises of side frame elements forming an enclosure with one end thereof covered by said base plate; (c) inserting projection elements in the perforations and against the base plate such that said elements extend above the surface of said perforated plate, said projection elements being disposed on a wire net in a pattern corresponding to the perforations in the plate; (d) introducing a hydraulically settable mixture capable of solidifiction through the open end of said mold frame over, around and covering the projections and the perforated plate; (e) compressing the ingredients in the mold against the base plate, and allowing solidification; (f) removing from the mold frame the compacted solidified ingredients as a unit along with the base plate; (g) subjecting the unit to steam treatment for a predetermined time; (h) removing the base plate and stripping the perforated plate.
Claim 5
Independent Claim
218 words
A method for producing non-slip pavement blocks, comprising: (a) providing a plate of predetermined thickness containing a plurality of perforations therein, with said perforations disposed in a predetermined pattern; (b) placing the perforated plate on a base plate of a mold comprised of side frame elements forming an enclosure with one end thereof covered by said base plate; (c) inserting projection elements in the perforations and against the base plate such that said elements extend above the surface of said perforated plate and wherein said projection elements are disposed on a wire net in a pattern corresponding to the perforations in the plate; (d) introducing a first hydraulically settable mixture capable of solidifcation through the open end of said mold frame over, around and covering the projections and the perforated plate; (e) introducing a second hydraulically settable mixture capable of solidification through the open end of said mold frame and on top of said first mixture; (f) compressing the ingredients in the mold against the base plate, and allowing solidification; (g) removing from the mold frame the compacted solidified ingredients as a unit along with the base plate; (h) subjecting the unit to steam treatment for a predetermined time; (i) removing the base plate and perforated plate; (j) soaking the block in water and drying it in air.
Claim 6
Independent Claim
218 words
A method for producing non-slip pavement blocks, comprising: (a) providing a plate of predetermined thickness containing a plurality of perforations therein, with said perforations disposed in a predetermined pattern; (b) placing the perforated plate on a base plate of a mold comprised of side frame elements forming an enclosure with one end thereof covered by said base plate; (c) inserting projection elements in the perforations and against the base plate such that said elements extend above the surface of said perforated plate and wherein said projection elements are disposed on a wire net in a pattern corresponding to the perforations in the plate; (d) introducing a first hydraulically settable mixture capable of solidifcation through the open end of said mold frame over, around and covering the projections and the perforated plate; (e) introducing a second hydraulically settable mixture capable of solidification through the open end of said mold frame and on top of said first mixture; (f) compressing the ingredients in the mold against the base plate, and allowing solidification; (g) removing from the mold frame the compacted solidified ingredients as a unit along with the base plate; (h) subjecting the unit to steam treatment for a predetermined time; (i) removing the base plate and perforated plate; (j) soaking the block in water and drying it in air.
Claim 7
Dependent Claim
60 words
A method for producing non-slip pavement blocks according to claim 3, wherein the projection elements are rubber projectiles, the first mixture is a paste of concrete or mortar or terrazzo, and the second mixture is a concrete paste and removal of the unit and base plate is accomplished by pressure exerted against the base plate from outside the mold frame.
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) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |