US3750409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelled trench-shoring apparatus
Assignee: Individual
•
Filing: 1972-08-08
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Granted: 1973-08-07
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Expires: 1992-08-08
Abstract
Abstract A trench-shoring apparatus having a modular panel construction whereby it may be readily adapted for use for lining trenches or open ground cuts of various depths and widths, with the apparatus being self-propelled by a series of cooperating and related hydraulic cylinders, so arranged and interconnected to different panels of the apparatus as to selectively create holding pressures against the side of the trench while effecting a forward moving thrust between panels.
Inventors
- 👤 L Orfei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:48
CPC Classifications
E; E02; E02D; E02D17/00; E02D17/06; E02D17/08; E02D17/086
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
A self-propelled trench-shoring apparatus having confronting wall units consisting of a series of prefabricated modular panels, with each panel comprising a. a substantially rectangularly shaped tubular frame adapted to be vertically disposed with its longitudinal length extending horizontally and with the frame having one side thereof completely covered with a metallic sheeting, b. means for connecting the longitudinal edges of said frame to like frame mEmbers one upon the other to form a vertically disposed wall unit of varying height, c. means for movably connecting each panel of a wall unit to a corresponding panel of a successive wall unit disposed in horizontal alignment to form a shoring apparatus of varying length, and d. means for movably connecting spaced apart parallelly extending wall units together for reciprocal movement transversely with respect to their longitudinal lengths.
Claim 2
Dependent Claim
135 words
A self-propelled trench-shoring apparatus having confronting wall units consisting of a series of prefabricated modular panels, with each panel comprising a. a substantially rectangularly shaped tubular frame adapted to be vertically disposed with its longitudinal length extending horizontally and with the frame having one side thereof completely covered with a metallic sheeting, b. means for connecting the longitudinal edges of said frame to like frame mEmbers one upon the other to form a vertically disposed wall unit of varying height, c. means for movably connecting each panel of a wall unit to a corresponding panel of a successive wall unit disposed in horizontal alignment to form a shoring apparatus of varying length, and d. means for movably connecting spaced apart parallelly extending wall units together for reciprocal movement transversely with respect to their longitudinal lengths.
Claim 3
Dependent Claim
92 words
A self-propelled trench-shoring apparatus as defined by claim 1, wherein said means for movably connecting each panel of a wall unit to a corresponding panel of a successive wall unit comprises a hydraulic cylinder mounted within the tubular frame of each panel with the reciprocally movable piston thereof connected to a vertical edge portion of a corresponding panel of the next successive wall unit so that each panel of each wall unit may be moved through its longitudinal plane horizontally with respect to each other and through the trench to be shored.
Claim 4
Dependent Claim
68 words
A self-propelled trench-shoring apparatus as defined by claim 1 wherein said means for connecting the longitudinal edges of said frame of each panel to a like frame of another panel comprises a connector insertable into open ends of said frame and having a locking pin journalled through said frame and said connector so as to removably connect one frame upon another to form a vertically disposed wall unit.
Claim 5
Dependent Claim
92 words
A self-propelled trench-shoring apparatus as defined by claim 3, wherein said means for movably connecting each panel of a wall unit to a corresponding panel of a successive wall unit comprises a hydraulic cylinder mounted within the tubular frame of each panel with the reciprocally movable piston thereof connected to a vertical edge portion of a corresponding panel of the next successive wall unit so that each panel of each wall unit may be moved through its longitudinal plane horizontally with respect to each other and through the trench to be shored.
Claim 6
Dependent Claim
73 words
A self-propelled trench shoring apparatus as defined by claim 1, wherein said means for movably connecting spaced apart parallelly extending wall units together comprise hydraulic cylinders extending transversely between spaced apart wall units and having pistons reciprocally movable therein so as to vary the spacing between said spaced parallelly extending wall units so as to dispose said wall units under pressure into facial abutment with the sides of the trench to be shored.
Claim 7
Dependent Claim
68 words
A self-propelled trench-shoring apparatus as defined by claim 5 wherein said means for connecting the longitudinal edges of said frame of each panel to a like frame of another panel comprises a connector insertable into open ends of said frame and having a locking pin journalled through said frame and said connector so as to removably connect one frame upon another to form a vertically disposed wall unit.
Claim 8
Dependent Claim
92 words
A self-propelled trench-shoring apparatus as defined by claim 5 wherein said means for movably connecting each panel of a wall unit to a corresponding panel of a successive wall unit comprises a hydraulic cylinder mounted within the tubular frame of each panel with the reciprocally movable piston thereof connected to a vertical edge portion of a corresponding panel of the next successive wall unit so that each panel of each wall unit may be moved through its longitudinal plane horizontally with respect to each other and through the trench to be shored.
Claim 9
Dependent Claim
72 words
A self-propelled trench-shoring apparatus as defined by claim 4, wherein said means for movably connecting spaced apart parallelly extending wall units together comprise hydraulic cylinders extending transversely between spaced apart wall units and having pistons reciprocally movable therein so as to vary the spacing between said spaced parallelly extending wall units so as to dispose said wall units under pressure into facial abutment with the sides of the trench to be shored.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |