US5009045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plank structure for boat dock and the like
Assignee: CTB Inc
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Filing: 1989-10-06
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Granted: 1991-04-23
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Expires: 2009-10-06
Abstract
Abstract A plastic plank member, for use with a deck arrangement, having a rigid base portion and a tread portion attached thereto which are integrally extruded of suitable plastics. The rigid portion of the plank member is adapted to be secured to an underlying support structure. The tread portion is formed with protrusions projecting upwardly away from the tread and grooves formed therein. The characteristics of the tread result in a sufficiently high coefficient of friction to reduce the possibility of slipping on the plank member.
Inventors
- 👤 Dennis G. Yoder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:32
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/02; E04F11/104; E04F11/16; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/11; B29C48/12; B29C48/13; E02; E02B; E02B3/00; E02B3/04; E02B3/06; E02B3/062; E02B3/064; B29C48/001; Y; Y02; Y02A; Y02A10/00; Y02A10/11
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
80 words
A plastic plank member for a deck or the like integrally formed of a plastic material having a coefficient of friction less than approximately 0.5, said plank member comprising: a top portion formed of a first material and tread means formed of a second material integral with said top portion, said tread means having a coefficient of friction generally greater than 0.5, fluid drainage means for draining fluid from said tread means and from said top portion of said plank.
Claim 2
Dependent Claim
80 words
A plastic plank member for a deck or the like integrally formed of a plastic material having a coefficient of friction less than approximately 0.5, said plank member comprising: a top portion formed of a first material and tread means formed of a second material integral with said top portion, said tread means having a coefficient of friction generally greater than 0.5, fluid drainage means for draining fluid from said tread means and from said top portion of said plank.
Claim 3
Dependent Claim
101 words
A plastic plank member for a deck or the like, said plank member integrally formed of a first plastic material and a second plastic material, said first and second plastic materials being co-extruded, said plank member comprising: a top portion formed of said first plastic material and tread means formed of said second plastic material integrally extruded with and attached to said top portion, said second material having a coefficient of friction greater than said first material and generally greater than 0.5, and fluid drainage means for draining fluid from said tread means and from said top portion of said plank.
Claim 4
Dependent Claim
101 words
A plastic plank member for a deck or the like, said plank member integrally formed of a first plastic material and a second plastic material, said first and second plastic materials being co-extruded, said plank member comprising: a top portion formed of said first plastic material and tread means formed of said second plastic material integrally extruded with and attached to said top portion, said second material having a coefficient of friction greater than said first material and generally greater than 0.5, and fluid drainage means for draining fluid from said tread means and from said top portion of said plank.
Claim 5
Dependent Claim
34 words
A plastic plank member according to claim 2 wherein said tread means is formed of a plastic which is generally elastically deformable relative to said top portion to which said tread means is attached.
Claim 6
Dependent Claim
43 words
A plastic plank member according to claim 3 wherein said thermal plastic elastomer has a coefficient of friction of approximately 0.65 embossments thereon for draining fluids from the surface of said tread means for increasing the coefficient of friction of said tread means.
Claim 7
Dependent Claim
30 words
A plastic plank member according to claim 2 wherein said tread means comprise a plurality of strips separated by grooves formed therebetween in said top portion of said plank member.
Claim 8
Dependent Claim
38 words
A plastic plank member according to claim 5 wherein said embossments form protrusions projecting upwardly away from the top surface of said tread means for increasing the coefficient of friction of said tread means and draining fluids therefrom.
Claim 9
Dependent Claim
39 words
A plastic plank member according to claim 6 wherein said embossments form protrusions projecting upwardly from the top surface of said tread means and recesses formed therebetween below the surface of said tread means for enhancing fluid drainage therefrom.
Claim 10
Dependent Claim
30 words
A plastic plank member according to claim 1 wherein said tread means comprise a plurality of strips separated by grooves formed therebetween in said top portion of said plank member.
Claim 11
Dependent Claim
42 words
A plastic plank member according to claim 8 wherein said tread means is formed with embossments projecting upwardly away from a top surface of said tread means for increasing the coefficient of friction of said tread means and for draining fluids therefrom.
Claim 12
Dependent Claim
35 words
A plastic plank member according to claim 8 wherein said embossments form protrusions projecting upwardly from a top surface of said tread means and recesses formed therebetween below the top surface of said tread means.
Claim 13
Dependent Claim
69 words
A plastic plank member for a deck or the like, said plank member generally integrally formed of plastic having a coefficent of friction of generally less than 0.5, said plank member being integrally extruded with a relatively elastically deformable tread means having a coefficent of friction of generally greater than 0.5, and drainage means for draining fluid from said tread means and from said top portion of said plank.
Claim 14
Dependent Claim
69 words
A plastic plank member for a deck or the like, said plank member generally integrally formed of plastic having a coefficent of friction of generally less than 0.5, said plank member being integrally extruded with a relatively elastically deformable tread means having a coefficent of friction of generally greater than 0.5, and drainage means for draining fluid from said tread means and from said top portion of said plank.
Claim 15
Dependent Claim
36 words
A plastic plank member according to claim 11 wherein said tread means has a cross-sectional width being substantially less than that of a top portion of said plank member to which said tread means is attached.
Claim 16
Dependent Claim
24 words
A plastic plank member according to claim 11 wherein a rigid portion of said plank member is formed of a generally rigid PVC plastic.
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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) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |