US3833175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile-platform-supported device for the application of a sprayable material to a surface
Assignee: Stabilator AB
•
Filing: 1973-02-22
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Granted: 1974-09-03
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Expires: 1993-02-22
Abstract
Abstract The present invention relates to a device supported by a mobile platform for the application of a sprayable material to a surface, for example sprayed concrete to a tunnel wall. It comprises a spray nozzle which is fitted to the free end of an extendable holder arm and it is mainly characterized in that the holder arm is pivoted at its lower end on a first swinging axis parallel to the direction of motion of the platform, the axis being situated at the free end of at least one intermediate arm, which in turn is pivoted on a second swinging axis parallel with the first swinging axis.
Inventors
- 👤 E Pulk
- 👤 C Hallsenius
- 👤 J Noren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:52
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/04; E21D11/10; E21D11/105
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
A device supported by a mobile platform for the application of a sprayable material to a surface, for example sprayed concrete to a tunnel wall, comprising a spray nozzle which is fitted to the free end of an extendable holder arm, characterized in that the holder arm is pivoted at its other end on a first swinging axis parallel to the direction of motion of the platform and is extendable radially relative to said direction of motion, the axis being situated at the free end of at least one intermediate arm, which in turn is pivoted on a second swinging axis parallel with the first swinging axis.
Claim 2
Independent Claim
107 words
A device supported by a mobile platform for the application of a sprayable material to a surface, for example sprayed concrete to a tunnel wall, comprising a spray nozzle which is fitted to the free end of an extendable holder arm, characterized in that the holder arm is pivoted at its other end on a first swinging axis parallel to the direction of motion of the platform and is extendable radially relative to said direction of motion, the axis being situated at the free end of at least one intermediate arm, which in turn is pivoted on a second swinging axis parallel with the first swinging axis.
Claim 3
Dependent Claim
20 words
A device as claimed in claim 1, wherein the second swinging axis is situated at one end of the platform.
Claim 4
Dependent Claim
19 words
A device as claimed in claim 2, wherein the second swinging axis is movable longitudinally relative to the platform.
Claim 5
Dependent Claim
31 words
A device as claimed in claim 2 wherein a hydraulic motor for the swinging motions of holder arm and intermediate arm is mounted at the swinging axis of the respective arm.
Claim 6
Dependent Claim
16 words
A device as claimed in claim 2 wherein the platform has a portal-like passage below it.
References Cited (Backward Citations)
US2102738A
Cited
US2185570A
Cited
GB718847A
Cited
US3153510A
Cited
US3276695A
Cited
GB1162340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |