IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0276887
(2014-05-13)
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등록번호 |
US-9346501
(2016-05-24)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Leydig, Voit & Mayer, Ltd.
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인용정보 |
피인용 횟수 :
0 인용 특허 :
15 |
초록
▼
A machine tread including a first and second pair of plates. The plates have corresponding first ends and second ends, and the second ends of the first pair include elliptical bores with elliptical plate bearing surfaces. The first ends of the second pair include aligned bushing bores. The first end
A machine tread including a first and second pair of plates. The plates have corresponding first ends and second ends, and the second ends of the first pair include elliptical bores with elliptical plate bearing surfaces. The first ends of the second pair include aligned bushing bores. The first ends of the second pair fit between the second ends of the first pair. Ends of a bushing including an inner bore with an interior surface and a cylindrical bearing surface engage the bushing bores forming a pin bore through the inner and elliptical bores. A retention pin fits in the segmented pin bore. The first pair has a tensioned position when a force acts in a direction away from the second pair. In the tensioned position, the elliptical plate bearing surfaces and the interior bushing surface abut the cylindrical bearing surface.
대표청구항
▼
1. A machine with a continuous tread comprising: a first pair of plates in spaced relation to one another and each aligned substantially parallel to a longitudinal axis, the plates having corresponding first ends and second ends, the second ends including coaxially aligned elliptical pin bores there
1. A machine with a continuous tread comprising: a first pair of plates in spaced relation to one another and each aligned substantially parallel to a longitudinal axis, the plates having corresponding first ends and second ends, the second ends including coaxially aligned elliptical pin bores therethrough and having elliptical plate bearing surfaces surrounding the elliptical pin bores, wherein the elliptical pin bores each have a major diameter that is greater than a minor diameter, the major diameter being aligned substantially parallel to the longitudinal axis;a second pair of plates in spaced relation to one another, the plates having corresponding first and second ends, the first ends including coaxially aligned bushing bores therethrough, wherein the second pair of plates is disposed adjacent the first pair of plates such that the first ends of the second pair of plates are disposed between the second ends of the first pair of plates;a tubular bushing including an inner pin bore having an elliptical shape between opposite ends of the tubular bushing and having an interior bushing surface surrounding the inner pin bore, the ends of the bushing being disposed in the bushing bores of the first end of the second pair of plates to form a segmented pin bore through the inner pin bore and the elliptical pin bores; anda retention pin disposed in the segmented pin bore to pivotally connect the first pair of plates to the second pair of plates, the retention pin having a cylindrical bearing surface and having a retention pin diameter that is less than the major diameter of the elliptical pin bore;wherein the first pair of plates has a tensioned position when a force acts upon the first pair of plates along the longitudinal axis in a direction away from the second pair of plates, the elliptical plate bearing surfaces being disposed in abutting relation with end portions of the cylindrical bearing surface when the first pair of plates is in the tensioned position, the interior bushing surface being in abutting relation with a body portion of the cylindrical bearing surface when the first pair of plates is in the tensioned position. 2. The machine of claim 1 further comprising a plate protrusion on one of the elliptical plate bearing surfaces and a pin depression in the cylindrical bearing surface, wherein the plate protrusion engages the pin depression when the first pair of plates is in the tensioned position so as to limit axial movement of the retention pin relative to the first and second pair of plates. 3. The machine of claim 2 wherein the first pair of plates has a relaxed position when the force is not acting upon the first pair of plates, the plate protrusion being disengaged from the pin depression in the cylindrical bearing surface when the first pair of plates is in the relaxed position to allow removal of the retention pin from the segmented pin bore. 4. The machine of claim 1 further comprising a pair of plate protrusions, each plate protrusion on one of the elliptical plate bearing surfaces, and a pair of pin depressions in the cylindrical bearing surface, wherein each plate protrusion engages one of the pin depressions when the first pair of plates is in the tensioned position so as to limit axial movement of the retention pin relative to the first and second pair of plates. 5. The machine of claim 4 wherein the first pair of plates has a relaxed position when the pulling force is not acting upon the first pair of plates, the plate protrusions being disengaged from the pin depressions in the cylindrical bearing surface when the first pair of plates is in the relaxed position to allow removal of the retention pin from the segmented pin bore. 6. The machine of claim 1 further comprising a plate protrusion on one of the elliptical plate bearing surfaces and a pin depression in the cylindrical bearing surface, wherein the plate protrusion engages the pin depression when the first pair of plates is in the tensioned position to limit axial movement of the retention pin relative to the first and second pairs of plates. 7. The machine of claim 1 further comprising a pair of plate protrusions, each plate protrusion on one of the elliptical plate bearing surfaces, and a pair of pin depressions in the cylindrical bearing surface, wherein each plate protrusion engages one of the pin depressions when the first pair of plates is in the tensioned position so as to limit axial movement of the retention pin relative to the first and second pair of plates. 8. A machine with a continuous tread comprising: a first link including a first pair of plates in spaced relation to one another and each aligned substantially parallel to a longitudinal axis, the first pair of plates having corresponding first ends and second ends, the second ends including coaxially aligned elliptical pin bores surrounded by elliptical plate bearing surfaces, wherein at least one of the elliptical plate bearing surfaces includes a plate protrusion;a second link including a second pair of plates in spaced relation to one another, the second pair of plates having corresponding first and second ends, the first ends including coaxially aligned bushing bores therethrough, wherein the second link is disposed adjacent the first link such that the first ends of the second link are disposed between the second ends of the first link;a tubular bushing including an inner pin bore having an elliptical shape between opposite ends of the tubular bushing, the ends of the bushing being disposed in the bushing bores of the first ends of the second link to form a segmented pin bore through the inner pin bore and the elliptical pin bores; anda retention pin disposed in the segmented pin bore to pivotally connect the first link to the second link, the retention pin having a cylindrical bearing surface that includes a pin depression;wherein the first and second links have:a tensioned position when a force acts upon the first link along the longitudinal axis in a direction away from the second link, wherein the elliptical pin bores are not coaxially aligned with the inner pin bore and the plate protrusion and the pin depression are in engaged relation so as to limit axial movement of the retention pin relative to the first and second links, anda relaxed position when no force acts upon the first link in a direction away from the second link, wherein the elliptical pin bores are coaxially aligned with the inner pin bore and the plate protrusion is disengaged from the pin depression in the relaxed position. 9. The machine of claim 8, wherein the retention pin is removable from the segmented pin bore when the first and second links are in the relaxed position. 10. The machine of claim 8, wherein the first link includes a plate protrusion on each of the elliptical plate bearing surfaces and the retention pin has a pair of pin depressions in the cylindrical bearing surface, the plate protrusions each engaging with one of the pin depressions when the first and second links are in the tensioned position. 11. The machine of claim 8, wherein the elliptical pin bores each have a major diameter that is greater than a minor diameter, the major diameter being aligned substantially parallel to the longitudinal axis. 12. The machine of claim 11, wherein the retention pin has a retention pin diameter that is less than the major diameter of the elliptical pin bore. 13. The machine of claim 8, wherein the tubular bushing includes an interior bushing surface surrounding the inner pin bore, and wherein the elliptical plate bearing surfaces are disposed in abutting relation with end portions of the cylindrical bearing surface when the first and second links are in the tensioned position, the interior bushing surface being in abutting relation with a body portion of the cylindrical bearing surface when the first and second links are in the tensioned position. 14. A continuous tread for a machine, the tread comprising: a first pair of plates in spaced relation to one another and each aligned substantially parallel to a longitudinal axis, the plates having corresponding first ends and second ends, the second ends including coaxially aligned elliptical pin bores therethrough and having elliptical plate bearing surfaces surrounding the elliptical pin bores, wherein the elliptical pin bores each have a major diameter that is greater than a minor diameter, the major diameter being aligned substantially parallel to the longitudinal axis;a second pair of plates in spaced relation to one another, the plates having corresponding first and second ends, the first ends including coaxially aligned bushing bores therethrough, wherein the second pair of plates is disposed adjacent the first pair of plates such that the first ends of the second pair of plates are disposed between the second ends of the first pair of plates;a tubular bushing including an inner pin bore having an elliptical shape between opposite ends of the tubular bushing and having an interior bushing surface surrounding the inner pin bore, the ends of the bushing being disposed in the bushing bores of the first end of the second pair of plates to form a segmented pin bore through the inner pin bore and the elliptical pin bores; anda retention pin disposed in the segmented pin bore so as to pivotally connect the first and second pair of plates, the retention pin having a cylindrical bearing surface and having a retention pin diameter that is less than the major diameter of the elliptical pin bore, the retention pin having a pin depression in the cylindrical bearing surface;wherein the continuous tread has a tensioned position in which the elliptical plate bearing surfaces press against end portions of the cylindrical bearing surface in a first direction along the longitudinal axis, the interior bushing surface press against a body portion of the cylindrical bearing surface in a second direction opposite the first direction, and a plate protrusion on at least one of the elliptical plate bearing surfaces engages the pin depression in the cylindrical bearing surface so as to limit axial movement of the retention pin relative to the first and second pair of links; andwherein the continuous tread has a relaxed position in which the plate protrusion is disengaged from the pin depression in the cylindrical bearing surface to permit removal of the retention pin from the segmented pin bore. 15. The tread of claim 14, wherein the continuous tread is in the tensioned position when a force acts upon the first pair of plates along the longitudinal axis in a first direction away from the second pair of plates, and the continuous tread is in the relaxed position when the force is not acting upon the first pair of plates. 16. The tread of claim 14, wherein a plate protrusion is on each of the elliptical plate bearing surfaces and the retention pin has a pair of pin depressions in the cylindrical bearing surface, the pair of plate protrusions engaging the pair of pin depressions when the continuous tread is in the tensioned position. 17. The tread of claim 14, wherein a plate protrusion is on each of the elliptical plate bearing surfaces and the retention pin has a pair of pin depressions in the cylindrical bearing surface, the pair of plate protrusions engaging the pair of pin depressions when the continuous tread is in the tensioned position.
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