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US3876187A Expired / Lapsed US ⏱️ 0.0 years remaining

Mortar mixing system

Assignee: Individual
•
Filing: 1974-02-22
•
Granted: 1975-04-08
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Expires: 1994-02-22
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Abstract

Abstract A system for producing dry mortar mix and at a remote location, transporting the dry mix to the construction site and then mixing the dry mix with water producing the mortar. The system includes a building having three separate compartments for mortar, additive and sand. An endless conveyor belt conveys sand from a sand dump to the sand compartment with the conveyor belt extending through a heat insulated tunnel with electrical coils positioned adjacent the length of the conveyor belt for heating the sand and reducing the moisture content in the sand. The three compartments exit into a drum pivotally mounted to the building which has a rotatably driven paddle for mixing the mortar, additive and sand. The drum is pivoted downwardly to dump the dry mix into a hopper mounted to the side wall of the building. A rotatably driven auger conveys the dry mix from the hopper upwardly into a chute which opens into a dry mix compartment of a vehicle therebeneath for transportation to the job site where dry mortar is augered into a job trailer. The trailer has a water storage tank and a dry mix compartment allowing the mortar to be prepared as needed in smaller quantities.

Inventors

  • 👤 Robert S Waltman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 23:52
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/0007; B28C7/0023; B28C7/003; B28C9/00; B28C9/04; B28C9/0481; B28C9/049

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 170 words
A system for mixing mortar comprising: a building including a mortar compartment, an additive compartment and a sand compartment with each including an exit opening, said sand compartment having a sand entrance opening; an elongated construction having a top end mounted to said building at said sand entrance and having a bottom end extending into a sand dump, said construction including heat insulated walls with one of said walls having a source of heat therein, said construction further including an endless conveyor belt mounted to said walls and extending along with said source of heat from said sand dump to said sand entrance; a dry mixer mounted in said building beneath said exit opening of said mortar compartment, said additive compartment and said sand compartment receiving mortar, additive and sand respectively therefrom; a dry mix chute mounted to said building; a dry mix storage hopper mounted to said building to receive dry mix from said dry mixer and having a rotatably driven auger mounted thereto extending upwardly into said chute.
Claim 2
Independent Claim 170 words
A system for mixing mortar comprising: a building including a mortar compartment, an additive compartment and a sand compartment with each including an exit opening, said sand compartment having a sand entrance opening; an elongated construction having a top end mounted to said building at said sand entrance and having a bottom end extending into a sand dump, said construction including heat insulated walls with one of said walls having a source of heat therein, said construction further including an endless conveyor belt mounted to said walls and extending along with said source of heat from said sand dump to said sand entrance; a dry mixer mounted in said building beneath said exit opening of said mortar compartment, said additive compartment and said sand compartment receiving mortar, additive and sand respectively therefrom; a dry mix chute mounted to said building; a dry mix storage hopper mounted to said building to receive dry mix from said dry mixer and having a rotatably driven auger mounted thereto extending upwardly into said chute.
Claim 3
Dependent Claim 35 words
The system of claim 1 wherein: said construction includes a leveling gate movably mounted to at least one of said heat insulated walls and is movable downwardly above said conveyor belt for leveling sand thereon.
Claim 4
Dependent Claim 37 words
The system of claim 2 wherein: said mortar compartment, said additive compartment and said sand compartment each include a separate movable wall mounted thereto at said exit opening of each compartment to control flow of material therethrough.
Claim 5
Dependent Claim 82 words
The system of claim 3 wherein: said dry mixer includes a drum pivotally mounted to said building with a dry mix opening, said drum is pivotable from a first position aligning said dry mix opening with said exit opening to a second position with said dry mix opening is aligned with said hopper for dumping dry mix therein, said mixer further includes a rotably driven axle with a plurality of paddle arms fixedly mounted to said axle and positioned within said drum.

References Cited (Backward Citations)

US900227A Cited
US1622294A Cited
US2644572A Cited
US3062522A Cited
US3101931A Cited
US3746313A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-04-07 1978-10-07 1979-04-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-04-07 1982-10-07 1983-04-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-04-07 1986-10-07 1987-04-08 $7700.00 Window Closed / Lapsed

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