US6863469B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking paving stone
Assignee: Beton Bolduc Inc
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Filing: 2002-06-10
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Granted: 2005-03-08
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Expires: 2022-06-10
Abstract
Abstract An interlocking paving stone of rectangular or square shape, the stone having a width W, a length L, and a thickness H. Each side of the stone is provided with at least one pair of alternating tongues and grooves on a bottom part thereof, having a size and shape adapted to receive a corresponding tongue or groove of an adjacent block. The groove has an overall volume greater than the volume of the tongue to facilitate the pouring of joint filling materials. The length of a pair of tongue and groove is equal to a length I, where both W and L are whole multiples of I. Furthermore, the tongues and grooves have a generally truncated pyramidal shape, where the peak of the truncated pyramid lies below the top surface of the block by 40 to 50% of the total height of the stones. The stone according to the present invention provides greater lateral and vertical stability to an assembled pavement.
Inventors
- 👤 Yvan Bolduc
- 👤 Maurice Bolduc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:16
CPC Classifications
E; E01; E01C; E01C5/00; E01C5/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
140 words
An interlocking paving stone having a width W, a length L and a thickness H and four sides, each side being provided with at least one pair of alternating tongues and grooves on a bottom part of aid sides, said tongues and grooves having a size and shape adapted to receive a corresponding tongue or groove of an adjacent block, the tongues and grooves on opposed sides of said block being offset from each other to permit a plurality of the stones to be interlocked having a top part of the said sides of adjacent stones proximate each other, and wherein each tongue and groove of each of said at least one pair of alternating tongues and grooves has a generally truncated pyramidal shape, where a peak of said generally pyramidal shape lies below top surface of said paving stone.
Claim 2
Dependent Claim
140 words
An interlocking paving stone having a width W, a length L and a thickness H and four sides, each side being provided with at least one pair of alternating tongues and grooves on a bottom part of aid sides, said tongues and grooves having a size and shape adapted to receive a corresponding tongue or groove of an adjacent block, the tongues and grooves on opposed sides of said block being offset from each other to permit a plurality of the stones to be interlocked having a top part of the said sides of adjacent stones proximate each other, and wherein each tongue and groove of each of said at least one pair of alternating tongues and grooves has a generally truncated pyramidal shape, where a peak of said generally pyramidal shape lies below top surface of said paving stone.
Claim 3
Dependent Claim
42 words
An interlocking paving stone according to claim 1 , wherein each of said at least one pair of alternating tongues and grooves has a length l, and wherein said width W and said length L are whole multiples of said length l.
Claim 4
Dependent Claim
29 words
An interlocking paving stone according to claim 1 , wherein said peak lies below said top surface by a distance corresponding to 40 to 50% of the thickness H.
Claim 5
Dependent Claim
38 words
An interlocking paving stone according to claim 1 , wherein an interior volume of said groove is greater than an exterior volume of said tongue for each of said at least one pair of alternating tongues and grooves.
Claim 6
Dependent Claim
30 words
An interlocking paving stone according to claim 1 , wherein each side of said stone is provided with at least one spacer located at a top portion of said side.
Claim 7
Dependent Claim
22 words
An interlocking paving stone according to claim 5 , wherein each of said at least one spacer lies above a corresponding groove.
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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) | 2008-03-07 | 2008-09-06 | 2009-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-03-07 | 2012-09-06 | 2013-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-03-07 | 2016-09-06 | 2017-03-08 | $7700.00 | Window Closed / Lapsed |