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US5865004A Expired / Lapsed US ⏱️ 0.0 years remaining

Recreational surface block locking system

Assignee: PLAYSAFE SURFACES Ltd
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Filing: 1997-01-14
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Granted: 1999-02-02
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Expires: 2017-01-14
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Abstract

Abstract A molded rubber recreational block locking system, wherein a molded rubber recreational surface block includes an upper surface and a resilient supporting structure below the upper surface. At least one recessed shoulder is located below the upper surface and intersects a marginal edge of the molded rubber recreational surface block. A fastening device interconnects adjacently positioned recessed shoulders in adjacent molded rubber recreational surface blocks for securing same together. Typically, at least one generally vertically directed through hole extends through each recessed shoulder and a flexible fastening device, such as a fastening strap, interconnects the through holes of adjacently positioned recessed shoulders in adjacent molded rubber recreational surface blocks. A cap covers the fastening device and recessed shoulders of adjacently positioned molded rubber recreational surface blocks.

Inventors

  • 👤 Steven G. Mitchell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 12:20
CPC Classifications
E; E01; E01C; E01C5/00; E01C5/005; E01C13/00; E01C13/04; E01C13/045; E01C5/18; E04; E04F; E04F15/00; E04F15/02; E04F15/10; E04F15/105; E04F15/22; E04F15/225; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/553; Y10T403/71; Y10T403/7111; Y10T428/00; Y10T428/25; Y10T428/254

Claims Analysis

Total Claims: 24
Claim 1
Independent Claim 65 words
A plurality of molded rubber recreational surface blocks each including: an upper surface; a resilient supporting structure below the upper surface; at least one recessed shoulder located below the upper surface and intersecting a marginal edge of the molded rubber recreational surface block; and a fastening strap interconnecting adjacently positioned recessed shoulders in adjacent molded rubber recreational surface blocks for securing same to each other.
Claim 2
Dependent Claim 65 words
A plurality of molded rubber recreational surface blocks each including: an upper surface; a resilient supporting structure below the upper surface; at least one recessed shoulder located below the upper surface and intersecting a marginal edge of the molded rubber recreational surface block; and a fastening strap interconnecting adjacently positioned recessed shoulders in adjacent molded rubber recreational surface blocks for securing same to each other.
Claim 3
Dependent Claim 118 words
A plurality of molded rubber recreational surface blocks each including: an upper surface; a honeycomb resilient supporting structure below the upper surface; marginal edges surrounding the upper surface and honeycomb resilient supporting structure; at least one recessed shoulder positioned below the upper surface and located adjacent one marginal edge; at least one generally vertically directed through hole extending through the at least one recessed shoulder; and a flexible fastening device interconnecting the through hole of adjacently positioned recessed shoulders in adjacent molded rubber recreational surface blocks for securing same to each other, each fastening device comprising a fastening strap extending through one through hole of each of the adjacently positioned shoulders in adjacent molded rubber recreational surface blocks.
Claim 4
Dependent Claim 118 words
A plurality of molded rubber recreational surface blocks each including: an upper surface; a honeycomb resilient supporting structure below the upper surface; marginal edges surrounding the upper surface and honeycomb resilient supporting structure; at least one recessed shoulder positioned below the upper surface and located adjacent one marginal edge; at least one generally vertically directed through hole extending through the at least one recessed shoulder; and a flexible fastening device interconnecting the through hole of adjacently positioned recessed shoulders in adjacent molded rubber recreational surface blocks for securing same to each other, each fastening device comprising a fastening strap extending through one through hole of each of the adjacently positioned shoulders in adjacent molded rubber recreational surface blocks.
Claim 5
Dependent Claim 38 words
The molded rubber recreational surface blocks as defined in claim 2 in which there are two through holes in each recessed shoulder, and each fastening strap extends through at least one through hole of adjacently positioned recessed shoulders.
Claim 6
Dependent Claim 28 words
The molded rubber recreational surface blocks as defined in claim 3 in which one fastening strap is positioned in crossover superimposed position relative to the other fastening strap.
Claim 7
Dependent Claim 32 words
The molded rubber recreational surface blocks as defined in claim 2 in which there are a plurality of recessed shoulders each having at least one through hole in said one marginal edge.
Claim 8
Dependent Claim 59 words
The molded rubber recreational surface blocks as defined in claim 5 in which the marginal edges of each molded rubber recreational surface blocks surround a polygonally shaped upper surface and resilient supporting structure, and one of the plurality of recessed shoulders is located in proximity to the intersection of two marginal edges of adjacent molded rubber recreational surface blocks.
Claim 9
Dependent Claim 51 words
The molded rubber recreational surface blocks as defined in claim 2 including a cap for covering adjacently positioned recessed shoulders in adjacent molded rubber recreational surface blocks, the cap having an upper cap surface that is positioned in general alignment with the upper surfaces of adjacently molded rubber recreational surface blocks.
Claim 10
Dependent Claim 33 words
The molded rubber recreational surface blocks as defined in claim 7 in which the cap has shock absorbing elements that engage the adjacently positioned recessed shoulders of adjacent molded rubber recreational surface blocks.
Claim 11
Dependent Claim 102 words
A plurality of molded rubber recreational surface blocks each including: a base of predetermined configuration having an upper surface, marginal side edges and a resilient supporting structure; at least one recessed shoulder positioned below the upper surface and proximate one of the marginal side edges; at least one through hole in the at least one recessed shoulder; and a fastening strap interconnecting the at least one through hole of adjacently positioned recessed shoulders in adjacently positioned molded recreational surface blocks for securing same to each other with the marginal side edges containing the at least one recessed shoulder in generally abutting relationship.
Claim 12
Dependent Claim 102 words
A plurality of molded rubber recreational surface blocks each including: a base of predetermined configuration having an upper surface, marginal side edges and a resilient supporting structure; at least one recessed shoulder positioned below the upper surface and proximate one of the marginal side edges; at least one through hole in the at least one recessed shoulder; and a fastening strap interconnecting the at least one through hole of adjacently positioned recessed shoulders in adjacently positioned molded recreational surface blocks for securing same to each other with the marginal side edges containing the at least one recessed shoulder in generally abutting relationship.
Claim 13
Dependent Claim 163 words
A plurality of molded rubber recreational surface blocks each including: a base of predetermined configuration having an upper surface, marginal side edges and a resilient supporting structure; at least one recessed shoulder positioned below the upper surface and proximate one of the marginal side edges; a pair of through holes in the at least one recessed shoulders; a pair of flexible fastening straps interconnecting the pair of through holes of adjacently positioned recessed shoulders in adjacently positioned molded recreational surface blocks for securing same to each other with the marginal side edges containing the at least one recessed shoulder in generally abutting relationship; and a cap for covering adjacently positioned recessed shoulders in adjacent molder rubber recreational surface blocks, the cap having an upper cap surface that is positioned in general alignment with the upper surfaces of adjacently molded rubber recreational surface blocks, and the cap having shock absorbing elements that engage adjacently positioned recessed shoulders of adjacent molded rubber recreational surface blocks.
Claim 14
Dependent Claim 163 words
A plurality of molded rubber recreational surface blocks each including: a base of predetermined configuration having an upper surface, marginal side edges and a resilient supporting structure; at least one recessed shoulder positioned below the upper surface and proximate one of the marginal side edges; a pair of through holes in the at least one recessed shoulders; a pair of flexible fastening straps interconnecting the pair of through holes of adjacently positioned recessed shoulders in adjacently positioned molded recreational surface blocks for securing same to each other with the marginal side edges containing the at least one recessed shoulder in generally abutting relationship; and a cap for covering adjacently positioned recessed shoulders in adjacent molder rubber recreational surface blocks, the cap having an upper cap surface that is positioned in general alignment with the upper surfaces of adjacently molded rubber recreational surface blocks, and the cap having shock absorbing elements that engage adjacently positioned recessed shoulders of adjacent molded rubber recreational surface blocks.
Claim 15
Dependent Claim 183 words
A plurality of molded rubber recreational surface blocks each including: a polygonally shaped base having an upper surface, marginal side edges and a resilient supporting structure; at least one recessed shoulder positioned below the upper surface and proximate one of the marginal edges; at least one other recessed shoulder positioned below the upper surface and proximate intersecting marginal edges of the polygonally shaped base; at least one through hole in each of the aforementioned recessed shoulders; a flexible fastening strap interconnecting the through holes of corresponding recessed shoulders proximate one marginal edge of adjacently positioned molded recreational surface blocks and a separate flexible fastening strap interconnecting the through holes of corresponding recessed shoulders intersecting marginal edges of the adjacently positioned molded recreational surface blocks in order to secure the marginal edges of the adjacently positioned recreational surface blocks in generally abutting relationship to each other; and a cap covering corresponding recessed shoulders in adjacently molded rubber recreational surface blocks, the cap having an upper cap surface that is positioned in general alignment with the upper surfaces of adjacently molded rubber recreational surface blocks.
Claim 16
Dependent Claim 183 words
A plurality of molded rubber recreational surface blocks each including: a polygonally shaped base having an upper surface, marginal side edges and a resilient supporting structure; at least one recessed shoulder positioned below the upper surface and proximate one of the marginal edges; at least one other recessed shoulder positioned below the upper surface and proximate intersecting marginal edges of the polygonally shaped base; at least one through hole in each of the aforementioned recessed shoulders; a flexible fastening strap interconnecting the through holes of corresponding recessed shoulders proximate one marginal edge of adjacently positioned molded recreational surface blocks and a separate flexible fastening strap interconnecting the through holes of corresponding recessed shoulders intersecting marginal edges of the adjacently positioned molded recreational surface blocks in order to secure the marginal edges of the adjacently positioned recreational surface blocks in generally abutting relationship to each other; and a cap covering corresponding recessed shoulders in adjacently molded rubber recreational surface blocks, the cap having an upper cap surface that is positioned in general alignment with the upper surfaces of adjacently molded rubber recreational surface blocks.
Claim 17
Dependent Claim 50 words
The molded rubber recreational surface blocks as defined in claim 11 in which a plurality of recessed shoulders with at least one through hole are provided along at least said one marginal edge for cooperative fastening association with corresponding recessed shoulders of a similar constructed molded rubber recreational surface block.
Claim 18
Dependent Claim 35 words
The molded rubber recreational surface blocks as defined in claim 12 including a plurality of recessed shoulders each with at least one through hole along a plurality of marginal edges of the recreational surface block.
Claim 19
Dependent Claim 21 words
The molded rubber recreational surface blocks as defined in claim 13, including at least two through holes in each recessed shoulder.
Claim 20
Dependent Claim 33 words
The molded rubber recreational surface blocks as defined in claim 14 including a recessed shoulder with one through hole at each of the intersecting marginal edges of the molded rubber recreational surface block.
Claim 21
Dependent Claim 33 words
The molded rubber recreational surface blocks as defined in claim 11 in which the cap includes shock absorbing elements that engage the adjacently positioned recessed shoulders of adjacently molded rubber recreational surface blocks.
Claim 22
Dependent Claim 37 words
The molded rubber recreational surface blocks as defined in claim 16 in which the shock absorbing elements of the cap comprise outer shock absorbing elements that engage the adjacently positioned recessed shoulders outside of the fastening straps.
Claim 23
Dependent Claim 40 words
The molded rubber recreational surface blocks as defined in claim 17 in which the cap includes an inner shock absorbing element spaced upwardly from the adjacently positioned recessed shoulders that engages same only upon the application of sufficient compressive force.
Claim 24
Dependent Claim 23 words
The molded rubber recreational surface blocks as defined in claim 18 in which the inner and outer shock absorbing elements comprise vertical struts.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2002-02-01 2002-08-03 2003-02-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2006-02-01 2006-08-03 2007-02-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2010-02-01 2010-08-03 2011-02-02 $7700.00 Window Closed / Lapsed

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