IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0082932
(2008-04-15)
|
등록번호 |
US-8113315
(2012-02-14)
|
발명자
/ 주소 |
- Farley, Herbert M.
- Lauwers, Andrew V.
- Mencer, III, Marion D
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
7 |
초록
▼
A ladder assembly for accessing an elevated platform of a work machine such as an agricultural combine includes an upper ladder portion connected to an upstanding handrail of the elevated platform for upward and downward movement, and a combination lower ladder portion and handle assembly carried on
A ladder assembly for accessing an elevated platform of a work machine such as an agricultural combine includes an upper ladder portion connected to an upstanding handrail of the elevated platform for upward and downward movement, and a combination lower ladder portion and handle assembly carried on the lower end of the upper ladder portion and pivotable between a stowed position generally vertically coextensive with at least a portion of the upper ladder portion, and a deployed position extending downwardly. A latch mechanism holds the lower ladder portion in the stowed position. The handle is positioned for use to move the ladder down and up, is manipulable to release the latch, and pivots out of the way when the ladder is deployed. The lower ladder portion can also carry a trim panel which covers a portion of the ladder when stowed.
대표청구항
▼
1. A ladder assembly for accessing an elevated platform of a work machine, comprising: (a) an upper ladder portion including an upper end in connection with an element of the elevated platform for generally upward and downward movement of the upper ladder portion relative to the platform, the upper
1. A ladder assembly for accessing an elevated platform of a work machine, comprising: (a) an upper ladder portion including an upper end in connection with an element of the elevated platform for generally upward and downward movement of the upper ladder portion relative to the platform, the upper ladder portion having a lower end coupled to a pivot bracket, wherein the pivot bracket pivots about the lower end relative to the upper ladder portion between a stowed position and a deployed position;(b) a handle assembly and a lower ladder portion fixedly connected to the pivot bracket, such that the handle assembly extends in a first direction and the lower ladder portion extends in a second direction, the second direction is opposite to the first direction, wherein the first and second directions are parallel to each other, wherein when the pivot bracket is in the stowed position, the lower ladder portion extends upwardly from the lower end of the upper ladder portion and a handle of the handle assembly extends downwardly therefrom, and when the pivot bracket is in the deployed position, the lower ladder portion extends downwardly from the lower end of the upper ladder portion and the handle extends generally upwardly in relation thereto; and(c) a latch mechanism disposed on the pivot bracket is configured for latching and holding the lower ladder portion in the stowed position, the latch mechanism including a latch release element disposed and configured to be movable in a predetermined manner for releasing and allowing pivotal movement of the lower ladder portion from the stowed position, and an element in connection with the handle disposed and configured when the lower ladder portion is in the stowed position so as to be movable by a predetermined movement of the handle to cooperatively contact and move the latch release element in the predetermined manner to release the lower ladder portion. 2. The ladder assembly of claim 1, wherein the handle is configured and connected to the lower ladder portion such that the predetermined movement of the handle comprises an upward movement relative to the lower ladder portion. 3. The ladder assembly of claim 2, wherein the upward movement relative to the lower ladder portion comprises about a 5 to 15 degree rotation of the handle relative to the lower ladder portion. 4. The ladder assembly of claim 1, wherein the handle is U-shaped. 5. The ladder assembly of claim 1, wherein the handle assembly comprises a bracket supporting the handle for limited outward movement relative to the lower ladder portion. 6. The ladder assembly of claim 1, wherein the handle assembly comprises a bracket supporting the handle and carrying a trim panel disposed so as to face outwardly from the work machine in covering relation to the latch mechanism when the lower ladder portion is in the stowed position. 7. The ladder assembly of claim 6, wherein the trim panel is disposed so as to face the work machine when the lower ladder portion is in the deployed position. 8. The ladder assembly of claim 1, wherein the work machine comprises an agricultural combine and the elevated platform comprises an engine service platform of the combine. 9. A ladder assembly for an elevated platform of an agricultural combine, comprising: (a) an upper ladder portion including an upper end in connection with an element of the elevated platform for upward and downward movement of the upper ladder portion relative to the platform, and simultaneous pivotal movement of a lower end of the upper ladder portion toward and away from the platform, the upper ladder portion having a lower end coupled to a pivot bracket, wherein the pivot bracket pivots about the lower end relative to the upper ladder portion between a stowed position and a deployed position;(b) a lower ladder portion and handle assembly fixedly connected to the pivot bracket, such that the handle assembly extends in a first direction and the lower ladder portion extends in a second direction, the second direction is opposite to the first direction, wherein the first and second directions are parallel to each other, wherein when the pivot bracket is in the stowed position, the lower ladder portion extends upwardly along the lower end of the upper ladder portion and a handle of the handle assembly extends generally downwardly therefrom, and when the pivot bracket is in the deployed position, the lower ladder portion extends downwardly from and forms an extension of the lower end of the upper ladder portion and the handle is disposed generally between the ladder assembly and the combine; and(c) a latch mechanism disposed on the pivot bracket for latching the lower ladder portion when in the stowed position to the lower end of the upper ladder portion, the latch mechanism including a release element disposed and configured to be movable in a predetermined manner for releasing and allowing pivotal movement of the lower ladder portion from the stowed position, and the handle being disposed and configured such that when the lower ladder portion is in the stowed position the handle can be manipulated to bring an element of the handle assembly to bear against and move the release element to release the lower ladder portion. 10. The ladder assembly of claim 9, wherein the handle assembly comprises an element supporting the handle for limited outward movement relative to the lower ladder portion. 11. The ladder assembly of claim 9, wherein the handle assembly comprises a bracket supporting the handle and carrying a trim panel disposed so as to face outwardly from the combine in covering relation to the latch mechanism when the lower ladder portion is in the stowed position and which will rotate about the lower end of the upper ladder portion to a position between the combine and the ladder assembly when the lower ladder portion is moved to the deployed position. 12. A ladder assembly for accessing an elevated platform of an agricultural combine, comprising: (a) an upper ladder portion connected to an upstanding handrail of the elevated platform for upward and downward movement relative thereto between a raised position generally vertically coextensive with the handrail, and a lowered position extending downwardly therefrom, the upper ladder portion having a lower end coupled to a pivot bracket, wherein the pivot bracket pivots about the lower end relative to the upper ladder portion between a stowed position and a deployed position;(b) a lower ladder portion and handle assembly fixedly connected to the pivot bracket, such that the handle assembly extends in a first direction and the lower ladder portion extends in a second direction, the second direction is opposite to the first direction, wherein the first and second directions are parallel to each other, when the pivot bracket is in the stowed position, the lower ladder portion extends upwardly from the lower end of the upper ladder portion and is generally vertically coextensive with at least a portion of the upper ladder portion and a handle of the handle assembly extends generally downwardly therefrom, when the pivot bracket is in the deployed position, the lower ladder portion extends downwardly from the lower end of the upper ladder portion and the handle extends generally upwardly and is disposed generally between the ladder assembly and the combine; and(c) a latch mechanism disposed on the pivot bracket is configured for latching and holding the lower ladder portion in the stowed position, the latch mechanism including a release element disposed and configured to be movable in a manner for releasing and allowing pivotal movement of the lower ladder portion from the stowed position, and the handle being disposed and configured such that when the lower ladder portion is in the stowed position the handle can be manipulated to bring an element of the handle assembly to bear against and move the release element to release the lower ladder portion. 13. The ladder assembly of claim 12, wherein the handle assembly comprises an element supporting the handle for limited outward movement relative to the lower ladder portion. 14. The ladder assembly of claim 12, wherein the handle assembly comprises a bracket supporting the handle and carrying a trim panel disposed so as to face outwardly from the combine in covering relation to the latch mechanism when the lower ladder portion is in the stowed position and which will rotate about the lower end of the upper ladder portion to a position between the combine and the ladder assembly when the lower ladder portion is moved to the deployed position.
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