US3770101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unloading boom for material handling vehicle
Assignee: Individual
•
Filing: 1972-02-04
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Granted: 1973-11-06
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Expires: 1992-02-04
Abstract
Abstract A bulk material handling vehicle having a bulk material storage body and an articulated unloading boom hinged to one end of the body for movement between a retracted travel position wherein the boom is folded against one side of the body and an erect service position wherein the hinged boom sections are aligned. The boom contains an endless conveyor for transporting bulk material upwardly through the boom to the upper outfeed end of the boom and is equipped with means for regulating the conveyor tension and supporting the conveyor at the hinged joint of the boom in such a way as to prevent snagging of the conveyor between the hinged boom sections as the latter are rotated to their aligned positions.
Inventors
- 👤 B Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:51
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/36
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
206 words
An unloading boom for a bulk material handling vehicle comprising: upper and lower boom sections having upper outfeed and lower infeed openings respectively and normally upper and lower ends, first hinge means pivotally joining said sections on a first transverse hinge axis of said boom, second hinge means for pivotally mounting the lower end of said lower boom section on one end of said vehicle on a second hinge axis parallel to said first axis and a third normally horizontal hinge axis normal to said second hinge axis, said upper boom section being swingable on said axis relative to said lower boom section between a travel position wherein said upper section extends generally at right angles to and beyond the upper side of said lower section and a service position wherein said sections are longitudinally aligned, said lower boom section being swingable on said second axis between a travel position wherein said lower sections extends generally at right angles to said third axis and a service position wherein said third axis and the under side of said lower section define an acute included angle, and conveyor means within said boom including an endless conveyor member for moving material from said infeed opening to said outfeed opening.
Claim 2
Dependent Claim
206 words
An unloading boom for a bulk material handling vehicle comprising: upper and lower boom sections having upper outfeed and lower infeed openings respectively and normally upper and lower ends, first hinge means pivotally joining said sections on a first transverse hinge axis of said boom, second hinge means for pivotally mounting the lower end of said lower boom section on one end of said vehicle on a second hinge axis parallel to said first axis and a third normally horizontal hinge axis normal to said second hinge axis, said upper boom section being swingable on said axis relative to said lower boom section between a travel position wherein said upper section extends generally at right angles to and beyond the upper side of said lower section and a service position wherein said sections are longitudinally aligned, said lower boom section being swingable on said second axis between a travel position wherein said lower sections extends generally at right angles to said third axis and a service position wherein said third axis and the under side of said lower section define an acute included angle, and conveyor means within said boom including an endless conveyor member for moving material from said infeed opening to said outfeed opening.
Claim 3
Dependent Claim
70 words
An unloading boom according to claim 1 wherein: said conveyor member extends about said first hinge means in said travel position of said upper boom section, said conveyor means includes rollers at the upper and lower ends of said boom around which said conveyor member passes, and means for effecting adjustment of said roller endwise of said boom during rotation of said boom sections between their travel and service positions.
Claim 4
Dependent Claim
107 words
An unloading boom according to claim 1 wherein: said conveyor member has spaced conveyor paddles and upper and lower runs, said boom sections include longitudinal rail sections for supporting said upper run, said rail sections have adjacent ends which are beveled to form ramp surfaces for camming said conveyor paddles from between said ramp ends during rotation of said boom sections to their aligned service positions, and guide means extending about said first hinge axis for engaging and supporting an adjacent paddle to prevent said adjacent paddle from entering between the abutting ends of said boom sections during rotation of the latter to their aligned service positions.
Claim 5
Dependent Claim
46 words
An unloading boom according to claim 3 wherein: said first hinge means comprises a hinge pin, and said guide means comprises a guide member on said hinge pin haVing a surface extending circularly about the axis of said hinge pin and engaging said lower conveyor run.
Claim 6
Dependent Claim
128 words
An unloading boom according to claim 1 wherein: said boom sections have longitudinal partitions dividing the interior of said sections into upper and lower channels extending lengthwise of said sections, said conveyor member includes spaced conveyor paddles and has an upper run movable through said upper channel and a lower run movable through said lower channel, and said conveyor means includes means for driving said conveyor member in a direction to cause upward travel of said upper run through said upper channel, the height of said upper channel being substantially greater than the height of said paddles to provide a clearance space between said paddles and the upper wall of said upper channel, and said lower channel being dimensioned to receive said paddles with a relatively close fit.
Claim 7
Dependent Claim
127 words
An unloading boom according to claim 1 wherein: said second hinge means comprises a member adapted for attachment to said vehicle, a hinge plate containing said infeed opening, a hinge connection between said member and plate, said plate providing said third hinge axis, and a second hinge connection between said plate and the lower end of said lower boom section providing said second hinge axis, said second hinge axis is located substantially in the plane of said plate along one side of said infeed opening, said third hinge axis is located substantially in the plane of said plate along another side of said opening and generally normal to said second hinge axis, and means communicating said infeed opening to the lower end of said lower boom section.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |