US3923175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hitch for portable conveyor
Assignee: Individual
•
Filing: 1974-07-22
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Granted: 1975-12-02
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Expires: 1994-07-22
Abstract
Abstract This dump truck and portable conveyor hitch includes a pair of hingedly connected plates, one being pivotally connected to the conveyor, and the other being connected to the dump truck by means of a link member extending between the hinge and the truck. The link member is pivotally connected to both the hinge and the truck to permit the conveyor to be rotated about a shifting vertical pivot axis so that the hitch end of the conveyor can be maintained substantially under the dump truck discharge hatch to compensate for the side angling of the conveyor relative to the truck. The conveyor can be locked in specific side angled positions relative to the dump truck and can be rotated about its own axis and held in a horizontal position to compensate for lateral tilting of the truck.
Inventors
- 👤 Henry W Landvatter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:50
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/36
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
221 words
In a dump truck and portable conveyor combination: a. a portable conveyor including a hitch attachment means defining a longitudinal pivot axis, b. a dump truck including a hitch attachment means defining a generally vertical pivot axis, c. support means supporting the conveyor, d. hitch means including: 1. first and second hingedly connected hinge plate means, 2. pivot means connecting said first hinge plate means to the conveyor hitch attachment means for rotational movement of the conveyor about said longitudinal pivot axis thereof, 3. link means extending between said second hinge plate means and the truck hitch attachment means, said link means including substantially parallel first and second spaced pivot axes, 4. first pivot means connecting said link means to said second hinge plate means for rotational movement of said second hinge plate means and said conveyor relative to the link means about the first pivot axis, 5. second pivot means connecting said link means to said dump truck hitch attachment means for rotational movement of said link means relative to said truck hitch attachment means about said second pivot axis, and 6. the second pivot means permitting lateral shifting of the first pivot means tending to compensate for lateral movement of points on the conveyor spaced from said first pivot means when the conveyor rotates about said first pivot axis.
Claim 2
Dependent Claim
221 words
In a dump truck and portable conveyor combination: a. a portable conveyor including a hitch attachment means defining a longitudinal pivot axis, b. a dump truck including a hitch attachment means defining a generally vertical pivot axis, c. support means supporting the conveyor, d. hitch means including: 1. first and second hingedly connected hinge plate means, 2. pivot means connecting said first hinge plate means to the conveyor hitch attachment means for rotational movement of the conveyor about said longitudinal pivot axis thereof, 3. link means extending between said second hinge plate means and the truck hitch attachment means, said link means including substantially parallel first and second spaced pivot axes, 4. first pivot means connecting said link means to said second hinge plate means for rotational movement of said second hinge plate means and said conveyor relative to the link means about the first pivot axis, 5. second pivot means connecting said link means to said dump truck hitch attachment means for rotational movement of said link means relative to said truck hitch attachment means about said second pivot axis, and 6. the second pivot means permitting lateral shifting of the first pivot means tending to compensate for lateral movement of points on the conveyor spaced from said first pivot means when the conveyor rotates about said first pivot axis.
Claim 3
Dependent Claim
18 words
first and second hingedly connected hinge plates having a hinge axis transversely disposed of the conveyor longitudinal axis,
Claim 4
Dependent Claim
18 words
first and second hingedly connected hinge plates having a hinge axis transversely disposed of the conveyor longitudinal axis,
Claim 5
Dependent Claim
41 words
A combination as defined in claim 1, in which: e. locking means selectively locks said first hinge plate means against rotation relative to the conveyor about the pivot means connecting said first hinge plate means to said conveyor hitch attachment means.
Claim 6
Dependent Claim
26 words
pivot means connecting said first hinge plate means to the conveyor hitch attachment means for rotational movement of the conveyor about said longitudinal pivot axis thereof,
Claim 7
Dependent Claim
26 words
pivot means connecting said first hinge plate means to the conveyor hitch attachment means for rotational movement of the conveyor about said longitudinal pivot axis thereof,
Claim 8
Dependent Claim
27 words
link means extending between said second hinge plate means and the truck hitch attachment means, said link means including substantially parallel first and second spaced pivot axes,
Claim 9
Dependent Claim
27 words
link means extending between said second hinge plate means and the truck hitch attachment means, said link means including substantially parallel first and second spaced pivot axes,
Claim 10
Dependent Claim
46 words
A combination as defined in claim 2, in which: f. said pivot means connecting said first hinge plate means to said conveyor hitch attachment means includes a friction fastener means, and g. said locking means is provided at least in part by said friction fastener means.
Claim 11
Dependent Claim
48 words
pivot and holding means connecting the first hinge plate to the conveyor end plate for rotational movement of the conveyor about the longitudinal pivot axis thereof and selectively holding the first hinge plate to the conveyor end plate at a selected angle of relative rotation of the conveyor,
Claim 12
Dependent Claim
48 words
pivot and holding means connecting the first hinge plate to the conveyor end plate for rotational movement of the conveyor about the longitudinal pivot axis thereof and selectively holding the first hinge plate to the conveyor end plate at a selected angle of relative rotation of the conveyor,
Claim 13
Dependent Claim
24 words
a link member extending between the second hinge plate and the truck hitch attachment means including substantially parallel first and second spaced pivot axes,
Claim 14
Dependent Claim
24 words
a link member extending between the second hinge plate and the truck hitch attachment means including substantially parallel first and second spaced pivot axes,
Claim 15
Dependent Claim
97 words
A combination as defined in claim 2, in which: f. said conveyor hitch attachment means includes an end plate means disposed in face-to-face relation with said first hinge plate means, g. said pivot means includes a fastener means extending between said end plate means and said first hinge plate means, h. one of said latter two plate means includes a plurality of apertures arcuately disposed about said pivot means, and i. said locking means includes a locking pin extending from the other of said latter two plate means and being selectively received within one of said apertures.
Claim 16
Dependent Claim
35 words
first pivot means connecting said link means to said second hinge plate means for rotational movement of said second hinge plate means and said conveyor relative to the link means about the first pivot axis,
Claim 17
Dependent Claim
35 words
first pivot means connecting said link means to said second hinge plate means for rotational movement of said second hinge plate means and said conveyor relative to the link means about the first pivot axis,
Claim 18
Dependent Claim
34 words
second pivot means connecting said link means to said dump truck hitch attachment means for rotational movement of said link means relative to said truck hitch attachment means about said second pivot axis, and
Claim 19
Dependent Claim
34 words
second pivot means connecting said link means to said dump truck hitch attachment means for rotational movement of said link means relative to said truck hitch attachment means about said second pivot axis, and
Claim 20
Dependent Claim
40 words
first link pivot means longitudinally spaced from the hopper and connecting said link member to the second hinge plate for rotational movement of said second hinge plate and said conveyor relative to the link member about the first pivot axis,
Claim 21
Dependent Claim
40 words
first link pivot means longitudinally spaced from the hopper and connecting said link member to the second hinge plate for rotational movement of said second hinge plate and said conveyor relative to the link member about the first pivot axis,
Claim 22
Dependent Claim
76 words
In a dump truck and portable conveyor combination: a. a portable conveyor including a hitch attachment means providing an end plate defining a longitudinal pivot axis, and including a hopper in the vicinity of the hitch attachment means, b. a dump truck including a hitch attachment means defining a generally vertical pivot axis, and including a rear wall having a discharge hatch therein disposed above the conveyor hopper to deposit material therein, c. hitch means including:
Claim 23
Dependent Claim
76 words
In a dump truck and portable conveyor combination: a. a portable conveyor including a hitch attachment means providing an end plate defining a longitudinal pivot axis, and including a hopper in the vicinity of the hitch attachment means, b. a dump truck including a hitch attachment means defining a generally vertical pivot axis, and including a rear wall having a discharge hatch therein disposed above the conveyor hopper to deposit material therein, c. hitch means including:
Claim 24
Dependent Claim
110 words
A combination as defined in claim 5, in which: d. said second hinge plate includes a plurality of apertures disposed in arcuate relation about said first link pivot axis, e. said locking means includes a locking pin carried by said link member and engageable within one of said apertures and cooperating with said first link pivot means to provide a couple precluding said relative rotation of said link member and said second hinge plate, and f. said truck hitch attachment means includes stop means spaced from said second link pivot axis and engageable with said link member to limit rotation of said link member about said second link pivot axis.
Claim 25
Dependent Claim
34 words
second link pivot means connecting said link member to said dump truck hitch attachment means for rotational movement of said link member relative to said truck hitch attachment means about said second pivot axis,
Claim 26
Dependent Claim
34 words
second link pivot means connecting said link member to said dump truck hitch attachment means for rotational movement of said link member relative to said truck hitch attachment means about said second pivot axis,
Claim 27
Dependent Claim
38 words
the second pivot means permitting lateral shifting of the first pivot means tending to compensate for lateral movement of points on the conveyor spaced from said first pivot means when the conveyor rotates about said first pivot axis.
Claim 28
Dependent Claim
38 words
the second pivot means permitting lateral shifting of the first pivot means tending to compensate for lateral movement of points on the conveyor spaced from said first pivot means when the conveyor rotates about said first pivot axis.
Claim 29
Dependent Claim
35 words
said second pivot means permitting lateral shifting of the first pivot means tendIng to compensate for lateral movement of the hopper away from the hatch when the conveyor rotates about the first pivot axis, and
Claim 30
Dependent Claim
35 words
said second pivot means permitting lateral shifting of the first pivot means tendIng to compensate for lateral movement of the hopper away from the hatch when the conveyor rotates about the first pivot axis, and
Claim 31
Dependent Claim
57 words
A combination as defined in claim 5, in which: e. said pivot and holding means connecting the first hinge plate to the conveyor end plate includes a sling transversely disposed across the conveyor and providing a laterally variable point of connection for the flexible tension element to hold said conveyor at said selected angle of relative rotation.
Claim 32
Dependent Claim
19 words
locking means selectively locking said link member against relative rotational movement about at least one of said pivot axes.
Claim 33
Dependent Claim
19 words
locking means selectively locking said link member against relative rotational movement about at least one of said pivot axes.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |