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US3768939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle apparatus for cementitious materials
Assignee: Individual
•
Filing: 1971-02-18
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Granted: 1973-10-30
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Expires: 1991-02-18
Abstract
Abstract A system for pumping a cementitious mix from a hopper and introducing it into remotely located cavity spaces, for instance between masonry units, or into cracks in walls, or into spaces inside hollow door or window frames, etc. The disclosure provides a flexible conduit connected between a pump and a discharge nozzle, and in particular includes actuating means at the nozzle end of the conduit for starting and stopping the pumping action, as distinguished from controlling the flow in the conduit using valves. When the pump is running the nozzle discharges the mix and then strikes the joint immediately thereafter as the nozzle is moved along to provide in combination with the pumping control an efficient system for completing such joints.
Inventors
- 👤 W Gramling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:05
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
266 words
Nozzle apparatus for use in pumping a cementitious mix from a hopper into cavity spaces between regularly spaced masonry units having exposed outer faces, the mix being pumped by a pump connected between the hopper and one end of a flexible conduit which carries the nozzle apparatus at its other end, said nozzle apparatus comprising a tubular member having a discharge end no wider than the spacing between the masonry units, a guide plate attached transversely to the tubular member at its discharge end and adapted to slide across said outer faces of the masonry units, and the plate having a central opening exposing the discharge end of the tubular member through which it can discharge mix in the direction of said cavity spaces, the plate being sealed to said member at said opening and extending in all transverse directions from the member by distances sufficient that the plate overlies part of the faces of adjacent masonry units and the cavity spaces therebetween so that the plate confines the mix to the cavity spaces therebetween as it is discharged from the member, the plate having a leading portion curved away from said outer faces to facilitate sliding thereacross and having a trailing portion including a part of its surface bulged to enter the cavity space between units and strike the mix after it has been discharged thereinto, and the nozzle having a lip located along the lower edge of the discharge opening and extending from the plate in the direction of discharge to rest upon the masonry units and guide the nozzle as it slides thereacross.
Claim 2
Dependent Claim
266 words
Nozzle apparatus for use in pumping a cementitious mix from a hopper into cavity spaces between regularly spaced masonry units having exposed outer faces, the mix being pumped by a pump connected between the hopper and one end of a flexible conduit which carries the nozzle apparatus at its other end, said nozzle apparatus comprising a tubular member having a discharge end no wider than the spacing between the masonry units, a guide plate attached transversely to the tubular member at its discharge end and adapted to slide across said outer faces of the masonry units, and the plate having a central opening exposing the discharge end of the tubular member through which it can discharge mix in the direction of said cavity spaces, the plate being sealed to said member at said opening and extending in all transverse directions from the member by distances sufficient that the plate overlies part of the faces of adjacent masonry units and the cavity spaces therebetween so that the plate confines the mix to the cavity spaces therebetween as it is discharged from the member, the plate having a leading portion curved away from said outer faces to facilitate sliding thereacross and having a trailing portion including a part of its surface bulged to enter the cavity space between units and strike the mix after it has been discharged thereinto, and the nozzle having a lip located along the lower edge of the discharge opening and extending from the plate in the direction of discharge to rest upon the masonry units and guide the nozzle as it slides thereacross.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |