Patent US4232874A successfully refreshed from Google Patents.
US4232874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank mounted on back of four-wheel drive tractor
Assignee: Individual
•
Filing: 1978-11-17
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Granted: 1980-11-11
•
Expires: 1998-11-17
Abstract
Abstract A tank attached with a mounting bracket to the rear drive unit of a four-wheel drive tractor. The tank has a one-piece plastic body providing a chamber for accommodating a liquid. The top of the body is covered with a rearwardly and downwardly sloping plastic top wall to enhance the visibility of the tractor operator. A plurality of ribs on the bottom wall and top wall project into the chamber on opposite sides of upright baffle plates. A liquid return structure located in the chamber and mounted on the back wall of the body discharges return liquid to opposite end sections of the chamber.
Inventors
- 👤 Stuart Ystebo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:52
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/30; A; A01; A01M; A01M7/00; A01M7/0082; A01M7/0085
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
361 words
A tank mountable on a rear drive unit of a tractor with a mounting bracket, said drive unit having rear drive wheels comprising: a one-piece body of plastic material reinforced with fibers having a chamber for storing liquid, said body comprising a bottom wall having a front transverse portion, a rear transverse portion, and a plurality of first ribs projected upwardly into the chamber, each first rib extended from the front portion to the rear portion of the bottom wall, each first rib having a bead of foamed plastic covered with plastic material, a front wall joined to the front transverse portion, a rear wall joined to the rear transverse portion, said front wall having a height greater than the height of the rear wall, side walls joined to the bottom wall and front and rear walls, a top wall joined to the front wall, rear wall, and side walls to cover the top of the body and close the top of the chamber, said top wall being generally flat and sloping downward and rearward from the front wall toward the rear wall, said top wall being made of plastic material reinforced with fibers and having a plurality of laterally spaced second ribs projected downwardly into the chamber, each second rib extended from the front wall to the rear wall, each second rib having a bead of foamed plastic covered with plastic material, a plurality of upright baffle plates located in the chamber, each plate extended from the front wall to the rear wall and engageable with the bottom wall and top wall, means mounted on the top wall providing an inlet passage open to the chamber, said bottom wall and rear wall having central sections providing a downwardly directed well, second means mounted on the bottom wall providing an outlet passage in the lower portion of the well open to the chamber, and means mounted on the rear wall for receiving liquid and discharging liquid into the tank chamber, said means mounted on the rear wall including tubular means located in the chamber for carrying liquid toward the end walls and discharging liquid to the end sections of the chamber.
Claim 2
Dependent Claim
361 words
A tank mountable on a rear drive unit of a tractor with a mounting bracket, said drive unit having rear drive wheels comprising: a one-piece body of plastic material reinforced with fibers having a chamber for storing liquid, said body comprising a bottom wall having a front transverse portion, a rear transverse portion, and a plurality of first ribs projected upwardly into the chamber, each first rib extended from the front portion to the rear portion of the bottom wall, each first rib having a bead of foamed plastic covered with plastic material, a front wall joined to the front transverse portion, a rear wall joined to the rear transverse portion, said front wall having a height greater than the height of the rear wall, side walls joined to the bottom wall and front and rear walls, a top wall joined to the front wall, rear wall, and side walls to cover the top of the body and close the top of the chamber, said top wall being generally flat and sloping downward and rearward from the front wall toward the rear wall, said top wall being made of plastic material reinforced with fibers and having a plurality of laterally spaced second ribs projected downwardly into the chamber, each second rib extended from the front wall to the rear wall, each second rib having a bead of foamed plastic covered with plastic material, a plurality of upright baffle plates located in the chamber, each plate extended from the front wall to the rear wall and engageable with the bottom wall and top wall, means mounted on the top wall providing an inlet passage open to the chamber, said bottom wall and rear wall having central sections providing a downwardly directed well, second means mounted on the bottom wall providing an outlet passage in the lower portion of the well open to the chamber, and means mounted on the rear wall for receiving liquid and discharging liquid into the tank chamber, said means mounted on the rear wall including tubular means located in the chamber for carrying liquid toward the end walls and discharging liquid to the end sections of the chamber.
Claim 3
Dependent Claim
22 words
The tank of claim 1 wherein: the front wall has a height greater than two times the height of the rear wall.
Claim 4
Dependent Claim
40 words
The tank of claim 1 wherein: the top wall has a downwardly extended peripheral flange engageable with upper portions of the front wall, rear wall, and end walls of the body, and means securing the flange to said upper portions.
Claim 5
Dependent Claim
22 words
The tank of claim 3 wherein: the flange overlaps said upper portions of the front, rear, and end walls of the body.
Claim 6
Dependent Claim
36 words
The tank of claim 1 wherein: the bottom wall and rear wall having central sections providing a downwardly directed well, said second means providing an outlet passage being mounted on a lower portion of the well.
Claim 7
Dependent Claim
98 words
The tank of claim 1 including: means joined to the bottom wall adapted to be connected to the mounting bracket to support the tank on the rear drive unit of the tractor above the rear drive wheels, said means including first flange means located adjacent the rear transverse portion of the bottom wall in general vertical alignment with the rear wall, and second flange means located adjacent the front transverse portion of the bottom wall in general vertical alignment with the front wall mounted on the rear wall for receiving liquid and discharging liquid into the tank chamber.
Claim 8
Dependent Claim
27 words
The tank of claim 1 including: sight gauge means mounted on the bottom wall and top wall for monitoring the level of liquid in the tank chamber.
Claim 9
Dependent Claim
15 words
The tank of claim 7 wherein: the sight gauge means includes an upright tubular member.
Claim 10
Dependent Claim
37 words
The tank of claim 1 including: means joined to the bottom wall adapted to be connected to the mounting bracket to support the tank on the rear drive unit of the tractor above the rear drive wheels.
Claim 11
Dependent Claim
41 words
The tank of claim 9 wherein: the means joined to the bottom wall includes first flange means located adjacent the rear transverse portion of the bottom wall, and second flange means located adjacent the front transverse portion of the bottom wall.
Claim 12
Dependent Claim
31 words
The tank of claim 1 wherein: each baffle plate has an opening in a lower portion thereof, said tubular means having separate portions extended through the openings in the baffle plates.
Claim 13
Dependent Claim
37 words
The tank of claim 1 wherein: the bottom wall has a plastic core, a plastic outer layer, and a plastic inner layer, each first rib having a foam plastic bead located between the core and inner layer.
Claim 14
Dependent Claim
34 words
The tank of claim 1 wherein: the top wall has a plastic outer layer, and a plastic inner layer, each second rib having a foam plastic bead located between the inner and outer layers.
Claim 15
Dependent Claim
161 words
A tank having a chamber for storing liquid comprising: a body having a bottom wall, a front wall, a rear wall, and end walls providing a chamber for storing liquid, said bottom wall having a plurality of upwardly directed first ribs extended into the chamber, a top wall joined to the front wall, rear wall and end walls to cover the top of the body, said top wall sloping downward from the front wall toward the rear wall, said top wall having a plurality of downwardly directed second ribs extended into the chamber, first means providing an inlet passage open to the chamber, second means providing an outlet passage open to the chamber, and means mounted on the rear wall for receiving liquid and discharging liquid into the tank chamber, said means mounted on the rear wall including tubular means located in the chamber for carrying liquid toward the end walls and discharging liquid to the end sections of the chamber.
Claim 16
Dependent Claim
161 words
A tank having a chamber for storing liquid comprising: a body having a bottom wall, a front wall, a rear wall, and end walls providing a chamber for storing liquid, said bottom wall having a plurality of upwardly directed first ribs extended into the chamber, a top wall joined to the front wall, rear wall and end walls to cover the top of the body, said top wall sloping downward from the front wall toward the rear wall, said top wall having a plurality of downwardly directed second ribs extended into the chamber, first means providing an inlet passage open to the chamber, second means providing an outlet passage open to the chamber, and means mounted on the rear wall for receiving liquid and discharging liquid into the tank chamber, said means mounted on the rear wall including tubular means located in the chamber for carrying liquid toward the end walls and discharging liquid to the end sections of the chamber.
Claim 17
Dependent Claim
36 words
The tank of claim 14 wherein: the bottom wall and rear wall have central sections providing a downwardly directed well, said second means providing an outlet passage being mounted on a lower portion of the well.
Claim 18
Dependent Claim
53 words
The tank of claim 15 including: at least one baffle plate located in the chamber and extended from the front wall to the rear wall and engageable with the bottom wall and top wall, said baffle plate having an opening in the lower portion thereof for accommodating a portion of the tubular means.
Claim 19
Dependent Claim
17 words
The tank of claim 16 wherein: the baffle plate has an opening in the upper portion thereof.
Claim 20
Dependent Claim
19 words
The tank of claim 14 wherein: the body and top wall are made of plastic material having reinforcing fibers.
Claim 21
Dependent Claim
37 words
The tank of claim 18 wherein: the bottom wall has a plastic core, a plastic outer layer, and a plastic inner layer, each first rib having a foam plastic bead located between the core and inner layer.
Claim 22
Dependent Claim
34 words
The tank of claim 18 wherein: the top wall has a plastic outer layer, and a plastic inner layer, each second rib having a foam plastic bead located between the inner and outer layers.
Claim 23
Dependent Claim
15 words
The tank of claim 18 wherein: the first and second ribs each include a bead.
Claim 24
Dependent Claim
12 words
The tank of claim 21 wherein: the bead is a foamed plastic.
Claim 25
Dependent Claim
14 words
The tank of claim 14 wherein: the bottom wall has a downwardly directed well.
Claim 26
Dependent Claim
34 words
The tank of claim 14 including: at least one baffle plate located in the chamber and extended from the front wall to the rear wall and engageable with the bottom wall and top wall.
Claim 27
Dependent Claim
27 words
The tank of claim 24 wherein: the baffle plate has a first opening in an upper portion thereof, and a second opening in a lower portion thereof.
Claim 28
Dependent Claim
38 words
The tank of claim 25 including: tubular means located in the chamber for receiving liquid and discharging liquid into the tank chamber, said tubular means having a portion thereof extended through the second opening in the baffle plate.
Claim 29
Dependent Claim
22 words
The tank of claim 14 wherein: the front wall has a height greater than two times the height of the rear wall.
Claim 30
Dependent Claim
40 words
The tank of claim 14 wherein: the top wall has a downwardly extended peripheral flange engageable with upper portions of the front wall, rear wall, and end walls of the body, and means securing the flange to said upper portions.
Claim 31
Dependent Claim
22 words
The tank of claim 28 wherein: the flange overlaps said upper portions of the front, rear, and end walls of the body.
Claim 32
Dependent Claim
27 words
The tank of claim 14 including: sight gauge means mounted on the bottom wall and top wall for monitoring the level of liquid in the tank chamber.
Claim 33
Dependent Claim
15 words
The tank of claim 30 wherein: the sight gauge means includes an upright tubular member.
Claim 34
Dependent Claim
20 words
The tank of claim 14 including: means joined to the bottom wall adapted to be connected to a mounting bracket.
Claim 35
Dependent Claim
41 words
The tank of claim 32 wherein: the means joined to the bottom wall includes first flange means located adjacent the rear transverse portion of the bottom wall, and second flange means located adjacent the front transverse portion of the bottom wall.
Claim 36
Dependent Claim
57 words
The tank of claim 32 wherein: the means joined to the bottom wall includes first flange means located adjacent a rear transverse portion of the bottom wall in general vertical alignment with the rear wall, and second flange means located adjacent a front transverse portion of the bottom wall in general vertical alignment with the front wall.
Claim 37
Dependent Claim
130 words
A tank having a chamber for storing liquid comprising: a body having a bottom wall, a front wall, a rear wall, and end walls providing a chamber for storing liquid, a top wall joined to the front wall, rear wall, and end walls to cover the top of the body and enclose the chamber, said top wall sloping downwardly from the front wall toward the rear wall, first means providing an inlet passage open to the chamber, second means providing an outlet passage open to the chamber, and means mounted on the body for receiving liquid and discharging liquid into the tank chamber, said means including tubular means located in the chamber for carrying liquid toward the end walls and discharging liquid into the opposite end sections of the chamber.
Claim 38
Dependent Claim
130 words
A tank having a chamber for storing liquid comprising: a body having a bottom wall, a front wall, a rear wall, and end walls providing a chamber for storing liquid, a top wall joined to the front wall, rear wall, and end walls to cover the top of the body and enclose the chamber, said top wall sloping downwardly from the front wall toward the rear wall, first means providing an inlet passage open to the chamber, second means providing an outlet passage open to the chamber, and means mounted on the body for receiving liquid and discharging liquid into the tank chamber, said means including tubular means located in the chamber for carrying liquid toward the end walls and discharging liquid into the opposite end sections of the chamber.
Claim 39
Dependent Claim
48 words
The tank of claim 35 wherein: the bottom wall has a downwardly directed central well and baffle means located in said chamber on opposite sides of said well, said baffle means having lower openings, said tubular means having portions extended through said lower openings in the baffle means.
Claim 40
Dependent Claim
20 words
The tank of claim 35 wherein: the front wall has a height greater than the height of the rear wall.
Claim 41
Dependent Claim
55 words
The tank of claim 35 including: means joined to the bottom wall adapted to be connected to a mounting bracket, said means joined to the bottom wall including first flange means located adjacent a rear transverse portion of the bottom wall and second flange means located adjacent a front transverse portion of the bottom wall.
Claim 42
Dependent Claim
35 words
The tank of claim 38 wherein: the first flange means is located in general vertical alignment with the rear wall and the second flange means is located in general vertical alignment with the front wall.
Claim 43
Dependent Claim
312 words
A tank mountable on a rear drive unit of a tractor with a mounting bracket, said drive unit having rear drive wheels comprising: a one-piece body of plastic material reinforced with fibers having a chamber for storing liquid, said body comprising a bottom wall having a front transverse portion, a rear transverse portion, and a plurality of first ribs projected upwardly into the chamber, each first rib extended from the front portion to the rear portion of the bottom wall, each first rib having a bead of foamed plastic covered with plastic material, a front wall joined to the front transverse portion, a rear wall joined to the rear transverse portion, said front wall having a height greater than the height of the rear wall, side walls joined to the bottom wall and front and rear walls, a top joined to the front wall, rear wall, and side walls to cover the top of the body and close the top of the chamber, said top wall being generally flat and sloping downwardly and rearwardly from the front wall toward the rear wall, said top wall being made of plastic material reinforced with fibers and having a plurality of laterally spaced second ribs projected downwardly into the chamber, each second rib extended from the front wall to the rear wall, each second rib having a bead of foamed plastic covered with plastic material, a plurality of upright baffle plates located in the chamber, each plate extended from the front wall to the rear wall and engageable with the bottom wall and top wall, means mounted on the top wall providing an inlet passage into the chamber, said bottom wall and rear wall having central sections providing a downwardly directed well, and second means mounted on the bottom wall providing an outlet passage into the lower portion of the well open to the chamber.
Claim 44
Dependent Claim
312 words
A tank mountable on a rear drive unit of a tractor with a mounting bracket, said drive unit having rear drive wheels comprising: a one-piece body of plastic material reinforced with fibers having a chamber for storing liquid, said body comprising a bottom wall having a front transverse portion, a rear transverse portion, and a plurality of first ribs projected upwardly into the chamber, each first rib extended from the front portion to the rear portion of the bottom wall, each first rib having a bead of foamed plastic covered with plastic material, a front wall joined to the front transverse portion, a rear wall joined to the rear transverse portion, said front wall having a height greater than the height of the rear wall, side walls joined to the bottom wall and front and rear walls, a top joined to the front wall, rear wall, and side walls to cover the top of the body and close the top of the chamber, said top wall being generally flat and sloping downwardly and rearwardly from the front wall toward the rear wall, said top wall being made of plastic material reinforced with fibers and having a plurality of laterally spaced second ribs projected downwardly into the chamber, each second rib extended from the front wall to the rear wall, each second rib having a bead of foamed plastic covered with plastic material, a plurality of upright baffle plates located in the chamber, each plate extended from the front wall to the rear wall and engageable with the bottom wall and top wall, means mounted on the top wall providing an inlet passage into the chamber, said bottom wall and rear wall having central sections providing a downwardly directed well, and second means mounted on the bottom wall providing an outlet passage into the lower portion of the well open to the chamber.
Claim 45
Dependent Claim
22 words
The tank of claim 40 wherein: the front wall has a height greater than two times the height of the rear wall.
Claim 46
Dependent Claim
22 words
The tank of claim 40 including: means mounted on the body for receiving liquid and discharging the liquid into the tank chamber.
Claim 47
Dependent Claim
36 words
The tank of claim 42 wherein: said means mounted on the body includes tubular means located in the chamber for carrying liquid toward the end walls and discharging liquid into the end sections of the chamber.
Claim 48
Dependent Claim
37 words
The tank of claim 42 including: means joined to the bottom wall adapted to be connected to the mounting bracket to support the tank on the rear drive unit of the tractor above the rear drive wheels.
Claim 49
Dependent Claim
41 words
The tank of claim 44 wherein: the means joined to the bottom wall include first flange means located adjacent the rear transverse portion of the bottom wall, and second flange means located adjacent a front transverse portion of the bottom wall.
Claim 50
Dependent Claim
35 words
The tank of claim 45 wherein: the first flange means is located in general vertical alignment with the rear wall, and said second flange means is located in general vertical alignment with the front wall.
Claim 51
Dependent Claim
48 words
The tank of claim 40 wherein: each baffle plate has an opening in the lower portion thereof, and tubular means mounted on the body for receiving liquid and discharging the liquid into the tank, said tubular means having separate portions extended to the openings in the baffle plate.
Claim 52
Dependent Claim
34 words
The tank of claim 40 wherein: the top wall has a plastic outer layer, and a plastic inner layer, each second rib having a foamed plastic bead located between the inner and outer layers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |