IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0493584
(2012-06-11)
|
등록번호 |
US-8740191
(2014-06-03)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
13 |
초록
▼
A laboratory jack having a scissors-type jack assembly connected to upper and lower platforms includes guide members and thrust bearings or rollers, which provide improved stability across a longer stroke than previous laboratory jacks. One laboratory jack includes upper and lower tiers of scissor a
A laboratory jack having a scissors-type jack assembly connected to upper and lower platforms includes guide members and thrust bearings or rollers, which provide improved stability across a longer stroke than previous laboratory jacks. One laboratory jack includes upper and lower tiers of scissor assemblies comprised of scissor arms and guide rods disposed between the ends of each of the upper and lower scissor assemblies. The guide rods are carried by cross-brace members that are connected to and extend between opposing portions of the scissor assemblies, and the guide rods slide through a through bore in at least one of the cross-brace members. The scissor assemblies include rollers at the interface between laterally shifting ends of the scissor arms and an adjacent platform.
대표청구항
▼
1. A laboratory jack comprising: a first support plate;a second support plate;a scissors jack assembly disposed between and connected to the first and second support plates, the scissors jack assembly comprising at least a first scissor assembly and a second scissor assembly, the first and second sc
1. A laboratory jack comprising: a first support plate;a second support plate;a scissors jack assembly disposed between and connected to the first and second support plates, the scissors jack assembly comprising at least a first scissor assembly and a second scissor assembly, the first and second scissor assemblies being substantially identical, spaced apart, and parallel to each other, and first and second connection members spaced apart and connecting opposing positions on the first and second scissor assemblies, wherein the first connection member comprises a first mounting block fixedly attached to at least one of the first support plate and the second support plate;a linear drive operatively connected to the scissors jack assembly actuating the scissors jack assembly to drive the second support plate toward and away from the first support plate in a vertical direction; anda guide member extending from the first connection member to the second connection member, the guide member spaced between the first scissors assembly and the second scissors assembly, the guide member fixedly attached to the first connection member on one end and movably attached to the second connection member, wherein the second connection member slides along the guide member as the scissors jack assembly lowers or raises the second support plate. 2. The laboratory jack of claim 1, wherein the guide member extends through a bore hole associated with the second connection member. 3. The laboratory jack of claim 2, wherein the linear drive comprises the guide member. 4. The laboratory jack of claim 1, wherein the end of the guide member opposite the end that is fixedly attached to the first mounting block is attached to a second mounting block such that the second connection member slides between the first mounting block and the second mounting block. 5. The laboratory jack of claim 1, wherein the linear drive is substantially parallel to, spaced apart from and between the first and second scissor assemblies, and in the same linear plane as the guide member. 6. A laboratory jack comprising: a base platform;a load platform;a scissors jack assembly disposed between and connected to the base platform and the load platform for lowering and raising the load platform from the base platform in a vertical direction, the scissors jack assembly comprising a first linear actuator column spaced apart from a second linear actuator column, the first linear actuator column comprising a first upper scissor assembly operatively connected to a first lower scissor assembly, the second linear actuator column comprising a second upper scissor assembly operatively connected to a second lower scissor assembly, and first and second cross-brace members spaced apart and connecting the first linear actuator column with the second linear actuator column at the connections of the lower scissor assemblies to the upper scissor assemblies;a linear drive associated with the scissors jack assembly and aligned transverse to the vertical direction, wherein actuation of the linear drive causes the scissors jack assembly to raise or lower the load platform;a first guide member extending from the first cross-brace member to the second cross-brace member, the first guide member fixedly attached to the first cross-brace member and extending through a bore hole associated with the second cross-brace member, wherein the second cross-brace member slides along the first guide member as the scissors jack assembly lowers or raises the load platform; anda second guide member extending from the first cross-brace member to the second cross-brace member parallel to and spaced apart from the first guide member, the second guide member fixedly attached to the first cross-brace member and extending through a second bore hole associated with the second cross-brace, wherein the second cross-brace member slides along the second guide member as the scissors jack assembly lowers or raises the load platform; and wherein the linear drive is carried by the first and second cross-brace members. 7. The laboratory jack of claim 6, wherein the linear drive is disposed between and parallel to the first and second guide members. 8. The laboratory jack of claim 6, wherein the linear drive comprises a worm gear that urges the first cross-brace member toward and away from the second cross-brace member. 9. The laboratory jack of claim 6, wherein the base platform comprises a first array of connectors for connecting to a load, the first array spaced apart in a first measurement system, and a support platform comprises a second array of connectors for connecting to a load, the second array spaced apart in a second measurement system. 10. The laboratory jack of claim 9, wherein the laboratory jack is substantially symmetrical about a horizontal center plane between the base platform and the load platform, whereby the laboratory jack is functionally operational when inverted about the horizontal center plane for supporting a load on either the support platform or the base platform. 11. The laboratory jack of claim 6, wherein one or more connections between the upper and lower scissor assemblies comprise thrust bearings. 12. The laboratory jack of claim 6, comprising a roller carried by opposing movable ends of the first and second lower scissor assemblies, the roller engaging the base platform, wherein the movable ends of the first and second lower scissor assemblies travel laterally across the base platform on the roller. 13. A laboratory jack comprising: a first support plate;a second support plate;a scissors jack assembly disposed between and connected to the first and second support plates, the scissors jack assembly comprising at least a first scissor assembly and a second scissor assembly, the first and second scissor assemblies being substantially identical, spaced apart, and parallel to each other and connected by a first cross-brace member and a second cross-brace member, wherein the first cross-brace member is adjacent the first support plate and connects a non-translating end of the first scissor assembly with a non-translating end of the second scissor assembly and connects opposing positions on the first and second scissor assemblies, wherein the second cross-brace member adjacent the first support plate and connecting a translating end of the first scissor assembly with translating end of the second scissor assembly, and a guide rod connected to the first cross-brace member and extending through a through bore associated with the second cross-brace member, and wherein the guide rod is spaced apart from the first support plate;a drive member for actuating the scissors jack assembly to drive the second support plate toward and away from the first support plate in a vertical direction; anda roller associated with the first scissor assembly, the roller disposed at a laterally translating interface between the first scissor assembly and the first support plate, wherein the scissor assembly rolls across the first support plate on the roller, and wherein the roller is carried by the second cross-brace member.
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