US4071153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical pusher plate for a horizontally discharging semi-trailer
Assignee: Individual
•
Filing: 1976-08-23
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Granted: 1978-01-31
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Expires: 1996-08-23
Abstract
Abstract A pusher plate for a horizontally discharging semi-trailer is formed with a forwardly and downwardly extending support on the material engaging face thereof arranged to slidably engage the floor of the semi-trailer so as to hold the pusher plate in a vertical position in the semi-trailer body in which it is movably positioned.
Inventors
- 👤 Howard Booher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:54
CPC Classifications
B; B65; B65F; B65F3/00; B65F3/24; B65F3/28; B60; B60P; B60P1/00; B60P1/006
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
240 words
A vertical pusher plate machanism for operation in a horizontally discharging semi-trailer having an elongated body with a floor and a discharge opening in one end, comprising: a vertically oriented pusher plate slidably mounted in the trailer body for movement toward and away from the discharge opening; a pusher plate moving means mounted to one side of said pusher plate on the trailer body, extending through said pusher plate and connected thereto on the other side of said pusher plate near the center of said pusher plate, said pusher plate moving means being oriented and connected to said pusher plate to apply horizontally directed force to said pusher plate near the center of said pusher plate; a pusher plate supporting means which includes a first elongate portion connected at one end thereof to said pusher plate other side near the center of said pusher plate to extend horizontally and outwardly from said pusher plate and a second elongate portion connected at one end thereof to the other end of said first elongate portion, said second elongate portion extending downwardly from said first elongate portion and having the other end thereof slidably contacting the trailer body floor at a location between said pusher plate and the discharge opening so that forces acting on said pusher plate tending to tilt same as said plate moves toward the trailer discharge opening are transmitted to the trailer body via said pusher plate supporting means.
Claim 2
Dependent Claim
240 words
A vertical pusher plate machanism for operation in a horizontally discharging semi-trailer having an elongated body with a floor and a discharge opening in one end, comprising: a vertically oriented pusher plate slidably mounted in the trailer body for movement toward and away from the discharge opening; a pusher plate moving means mounted to one side of said pusher plate on the trailer body, extending through said pusher plate and connected thereto on the other side of said pusher plate near the center of said pusher plate, said pusher plate moving means being oriented and connected to said pusher plate to apply horizontally directed force to said pusher plate near the center of said pusher plate; a pusher plate supporting means which includes a first elongate portion connected at one end thereof to said pusher plate other side near the center of said pusher plate to extend horizontally and outwardly from said pusher plate and a second elongate portion connected at one end thereof to the other end of said first elongate portion, said second elongate portion extending downwardly from said first elongate portion and having the other end thereof slidably contacting the trailer body floor at a location between said pusher plate and the discharge opening so that forces acting on said pusher plate tending to tilt same as said plate moves toward the trailer discharge opening are transmitted to the trailer body via said pusher plate supporting means.
Claim 3
Dependent Claim
33 words
The improvement in a vertical pusher plate for a horizontally discharging semi-trailer set forth in claim 1 and wherein the elongated body has a smooth floor and the support slidably engages the same.
Claim 4
Dependent Claim
49 words
The improvement in a vertical pusher plate for a horizontally discharging semi-trailer set forth in claim 1 and wherein the elongated body has a smooth floor and the support slidably engages the same and wherein a plastic shoe is positioned on said support in sliding arrangement with said floor.
Claim 5
Dependent Claim
61 words
The improvement in a vertical pusher plate for operation in a horizontally discharging semi-trailer set forth in claim 1 and wherein box rails are formed on the upper longitudinal edges of said elongated body and a roller assembly is positioned on each of the upper outer corners of said member with said rollers engaged in said box rails for guidance thereby.
Claim 6
Dependent Claim
83 words
The improvement in a vertical pusher plate for operation in a horizontally discharging semi-trailer set forth in claim 1 and wherein box rails are formed on the upper longitudinal edges of said elongated body and a roller assembly is positioned on each of the upper outer corners of said members with said rollers engaged in said box rails for guidance thereby and wherein secondary roller assemblies are mounted on the bottom of said member in supporting relation thereto with respect to said body.
Claim 7
Dependent Claim
79 words
The improvement in a vertical pusher plate for operation in a horizontally discharging semi-trailer set forth in claim 1 and wherein said means for moving the pusher plate toward and away from said discharge opening comprises a double acting multiple section telescopic hydraulic ram a portion of which is positioned through an opening in said pusher plate substantially centrally thereof and secured to said outwardly and downwardly extending support at a location in spaced relation to said pusher plate.
Claim 8
Dependent Claim
47 words
The improvement in a vertical pusher plate for a horizontally discharging semi-trailer set forth in claim 4 and wherein a tandem frame is pivoted to said upper outer corners of said member and said roller assembly consists of a pair of rollers journaled in said tandem frame.
Claim 9
Dependent Claim
34 words
The improvement in a vertical pusher plate for a horizontally discharging semi-trailer set forth in claim 7 and wherein said vertically standing member and said outwardly and downwardly extending support are integral and rigid.
Claim 10
Dependent Claim
34 words
The improvement in a vertical pusher plate for a horizontally discharging semi-trailer set forth in claim 4 and wherein said vertically standing member and said outwardly and downwardly extending support are integral and rigid.
References Cited (Backward Citations)
US3273728A
Cited
US2258988A
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US3572251A
Cited
US3901394A
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US3953170A
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US3913494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |