US4518641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-slip surface coatings
Assignee: Akzo Nobel Decorative Coatings Ltd
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Filing: 1983-02-16
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Granted: 1985-05-21
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Expires: 2003-02-16
Abstract
Abstract Rounded quartz sand particles (22) are each enclosed in a hardenable resin skin (23) which is integrated with the skins on adjacent particles and which creates a binding of the particles to a primed base (20, 21). A significant fraction of the particles may be remote from the base and only integrated with adjacent particles so that a contoured or embossed effect is created to provide a supplementary non-slip feature. In a process for forming such a surface coating the particles are wetted with a functional liquid, mixed with a binder related to the functional liquid and sprayed. The spraying process is powered by a progressive cavity pump (37) with a selection of particle/resin ratio such that the pump operates under a Sigma effect.
Inventors
- 👤 Bryan F. Shimmin
- 👤 James B. Pollard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:08
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/02; B05D1/00; B05D1/02; B05D1/12; D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0028; D06N7/0039; D06N7/0052; D06N7/0055; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/2438; Y10T428/24421; Y10T428/2443; Y10T428/25; Y10T428/259
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
116 words
A process for making a product having a non-slip surface comprising the steps of: (a) taking a non-slip particulate material in the form of particles of rounded shape and wetting and mixing it with a binder to create a flowable composition which is hardenable with time when applied as a film; and (b) spraying the composition with a progressive cavity pump on to a base so that the particles of the non-slip materials are caused to engage both with the base and with contiguous particles through the medium of a skin which hardens with time and which, on the surface of the product, closely follows the outline of the surface exposed particles of the non-slip material.
Claim 2
Dependent Claim
116 words
A process for making a product having a non-slip surface comprising the steps of: (a) taking a non-slip particulate material in the form of particles of rounded shape and wetting and mixing it with a binder to create a flowable composition which is hardenable with time when applied as a film; and (b) spraying the composition with a progressive cavity pump on to a base so that the particles of the non-slip materials are caused to engage both with the base and with contiguous particles through the medium of a skin which hardens with time and which, on the surface of the product, closely follows the outline of the surface exposed particles of the non-slip material.
Claim 3
Dependent Claim
25 words
A process according to claim 1 in which the particles are of rounded quartz sand in the grade range of 0.3 mm to 2.0 mm.
Claim 4
Dependent Claim
32 words
A process according to claim 1 in which a fraction of the particles engage only with adjacent particles and not with the base so that a contour or emboss is set up.
Claim 5
Dependent Claim
32 words
A process according to claim 1 in which the particulate material is of two or more visually differing materials and the skin is transparent so that a decorative non-slip surface is obtained.
Claim 6
Dependent Claim
74 words
A non-slip product made by the process of claim 1 and comprising a base (20, 21) having thereon non-slip particulate material of rounded shape, the particles (22) thereof being enclosed by a skin (23) which is integrated with the skins on adjacent particles and which has created a binding of the particles with the base, and the particles being stacked to add a contour which is in excess of that inherent from particle profiles.
Claim 7
Dependent Claim
71 words
A textured decorative product made by the process of claim 1 and comprising a wall having thereon rounded abrasive particulate material, the particles (22) thereof being enclosed by a skin (23) which is integrated with the skins on adjacent particles and which has created a binding of the particles with the wall, and the particles being stacked to add a contour which is in excess of that inherent from particle profiles.
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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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |