US3555983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paving grout control device
Assignee: CMI Terex Corp
•
Filing: 1968-08-02
•
Granted: 1971-01-19
•
Expires: 1988-08-02
Abstract
Abstract Apparatus for conditioning paving material which includes coarse aggregate in suspension, the apparatus consisting of a comblike structure which is immersed to a predetermined depth in the paving material to coact with finishing or operating elements. The comblike structure may take the form of a screen plate having a plurality of evenly spaced vertical slots, which screen plate may be adjustably positioned along the leading edge of paving material finishing elements of selected roadway construction equipment.
Inventors
- 👤 George W Swisher Jr
- 👤 Don W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:27
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/30; E01C19/34; E01C19/40; E01C19/407
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
138 words
A device for conditioning of wetted paving material containing coarse aggregate during a pavement surface forming operation comprising: support means which is movable with respect to a bulk of paving material disposed at a location which is to be overlaid with a surface finished pavement; surfacing means extending from said support means into contact with said paving material to form said paving material into a pavement surface of desired profile; and screen means having plural openings therethrough and being secured in front of said surfacing means in contact with said paving material, at least a portion of said screen means having a forward ascending slope such that coarse aggregate material is force forced below said screen means while remaining paving material passes through said openings and into contact with said surfacing means for formation of said pavement surface.
Claim 2
Independent Claim
138 words
A device for conditioning of wetted paving material containing coarse aggregate during a pavement surface forming operation comprising: support means which is movable with respect to a bulk of paving material disposed at a location which is to be overlaid with a surface finished pavement; surfacing means extending from said support means into contact with said paving material to form said paving material into a pavement surface of desired profile; and screen means having plural openings therethrough and being secured in front of said surfacing means in contact with said paving material, at least a portion of said screen means having a forward ascending slope such that coarse aggregate material is force forced below said screen means while remaining paving material passes through said openings and into contact with said surfacing means for formation of said pavement surface.
Claim 3
Dependent Claim
35 words
A device as set forth in claim 1 wherein said surfacing means comprises: screed means having a leading edge strike-off portion of desired profile; and means attached to said screed means for imparting vibration thereto.
Claim 4
Dependent Claim
79 words
A device as set forth in claim 1 wherein said screen means comprises: screen plate means having plural vertical slots, said plate means extending across said paving material, and said plate means having said forward ascending slope; securing means rigidly holding said screen plate means along the front of said surfacing means; and adjustment means for fixing the level of said screen plate means relative to said surfacing means to gain optimum pavement conditioning per consistency of paving material.
Claim 5
Dependent Claim
73 words
A device as set forth in claim 2 wherein said screen means comprises: screen plate means having plural vertical slots, extending across said paving material; and having said forward ascending slope; securing means rigidly holding said screen plate means along the front of said screed means; and adjustment means for fixing the level of said screen plate means relative to said screen means to gain optimum pavement conditioning per consistency of paving material.
Claim 6
Dependent Claim
17 words
A device as set forth in claim 1 wherein said support means comprises; a slip-form paver assembly.
Claim 7
Dependent Claim
103 words
A device as set forth in claim 3 wherein said securing means and adjustment means comprise: lever arm means having one end pivotally secured to the said screen plate means and having the other end pivotally secured to said surfacing means; threaded insert means movable held by said lever arm means at a point intermediate the ends; and adjusting bolt means rotatably retained on said surfacing means and extending up through said insert means in threaded engagement such that rotation of said bolt means will change the level of said lever arm and therefore said screen plate means relative to said surfacing means.
Claim 8
Dependent Claim
36 words
A device as set forth in claim 6 which is further characterized in that: said support means is a slip-form paving assembly; and said surfacing means is a vibrating screed operating element of said paver assembly.
Claim 9
Dependent Claim
92 words
A device as set forth in claim 1 wherein said screen means comprises: screen plate means having plural openings of preset size as determined by the aggregate sizE of said paving material, said plate means extending across said paving material, and said plate means being supported in generally vertical disposition; securing means rigidly holding said screen plate means along the front of said surfacing means; and adjustment means for fixing the level of said screen plate means relative to said surfacing means to gain optimum pavement conditioning per consistency of paving material.
Claim 10
Dependent Claim
28 words
A device as set forth in claim 8 which is further characterized to include; vibrator means secured to said surfacing means to impart vibration of predetermined frequency thereto.
Claim 11
Dependent Claim
85 words
A device as set forth in claim 1 wherein said screen means comprises: upper plate means vertically adjustably secured to said surfacing means to extend across the front of said surfacing means; a plurality of equispaced bars secured to the front of said upper plate means and extending downward into contact with said paving material, the lower end of said bars being bent rearwardly to a forward ascending slope; and vibrator means for imparting vibratory motion to said upper plate means and plurality of bars.
Claim 12
Dependent Claim
41 words
A device as set forth in claim 10 which is further characterized in that: said support means is a slip-form paver assembly; and said surfacing means is a vibrating screed operating element supported therefrom in finishing contact with said paving material.
Claim 13
Independent Claim
164 words
A device for conditioning of wetted paving material containing coarse aggregate, comprising: support means which is movable along a path with respect to a bulk of paving material; screening means disposed continuously across said support means and generally transverse to said path, said screening means having plural spaces directed therethrough in generally horizontal disposition and having at least a portion with a forward ascending slope; suspension means connected to said support means and said screening means to hold the screening means at a predetermined depth in said paving material such that forward movement of said support means causes said screening means to force the coarse aggregate downward away from the surface of said paving material; screeding means supported from said suspension means; vibrator means connected to said screeding means to impart vibratory motion thereto; and linkage means rigidly connecting said screeding means to said screening means, said linkage means being adjustable to enable vertical adjustment of said screening means relative to said screeding means.
Claim 14
Independent Claim
164 words
A device for conditioning of wetted paving material containing coarse aggregate, comprising: support means which is movable along a path with respect to a bulk of paving material; screening means disposed continuously across said support means and generally transverse to said path, said screening means having plural spaces directed therethrough in generally horizontal disposition and having at least a portion with a forward ascending slope; suspension means connected to said support means and said screening means to hold the screening means at a predetermined depth in said paving material such that forward movement of said support means causes said screening means to force the coarse aggregate downward away from the surface of said paving material; screeding means supported from said suspension means; vibrator means connected to said screeding means to impart vibratory motion thereto; and linkage means rigidly connecting said screeding means to said screening means, said linkage means being adjustable to enable vertical adjustment of said screening means relative to said screeding means.
Claim 15
Dependent Claim
59 words
A device as set forth in claim 12 which is further characterized in that; said support means is a slip-form paver assembly which includes plural, serially disposed paving elements supported beneath a main frame, said main frame being supported by plural track elements which are movable in concert along said path with respect to the bulk of paving material.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |