[특허]Patient lifting table

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60P-001/48
출원번호	US-0465580 (1983-02-10)
우선권정보	AU-198006168 (1980-10-22)
발명자 / 주소	Coates, Simon T. E.
출원인 / 주소	Coates Management Pty. Ltd.
대리인 / 주소	Litman, Day and McMahon
인용정보	피인용 횟수 : 41 인용 특허 : 5

초록 ▼

A patient lifting table includes upper and lower platforms with a connecting scissors linkage mechanism providing straight upward and downward movement of the upper platform. The scissors linkage mechanism has first and second link arms pivotally connected at intermediate portions and which form an

A patient lifting table includes upper and lower platforms with a connecting scissors linkage mechanism providing straight upward and downward movement of the upper platform. The scissors linkage mechanism has first and second link arms pivotally connected at intermediate portions and which form an X when extended. The lower end of one of the link members has a bell crank arm extending therefrom and situated on the underside of the lower platform. An extensible and retractible ram is also mounted generally below the lower platform and is pivotally connected to the bell crank arm whereby operation of the ram causes the link members to swing relative to each other and cause the upper platform to raise and lower. All of the ram and bell crank assembly is mounted below the generally planar, obstruction free upper surface of the lower platform for ease of cleaning, thereby making the lifting table particularly suited for hospital and veterinary operations.

대표청구항 ▼

1. A veterinary table comprising: (a) an upper platform having a planar, patient supportive upper surface and an underside including track means; (b) a lower platform positioned below and aligned with said upper platform and having a generally planar, obstruction free upper surface for said uppe

1. A veterinary table comprising: (a) an upper platform having a planar, patient supportive upper surface and an underside including track means; (b) a lower platform positioned below and aligned with said upper platform and having a generally planar, obstruction free upper surface for said upper platform to rest upon and an underside; (c) wheels mounted to said lower platform for movement over a floor surface; (d) a track means mounted in said lower platform underside; (e) a scissor linkage mechanism extending between and connected to said upper and lower platforms to provide straight upward and downward movement of said upper platform relative to said lower platform; said scissor linkage mechanism including a center link member having an upper end pivotally affixed to said upper platform underside and a lower end slidable in said lower platform track means, and spaced link members with said center link member extending therebetween; said spaced link members having upper ends slidable in said upper platform track means and lower ends pivotally affixed to said lower platform underside; said center link member and said spaced link members having pivotally interconnected mid-portions; (f) said lower ends of said spaced link members being mounted below said lower platform upper surface and having bell crank arms extending angularly thereform and supporting a rod extending transversely between said bell crank arms; (g) a power fluid ram mounted in said lower platform and aligned with said lower platform track means, said ram having one end pivotally connected to said lower platform and a second end pivotally connected to said rod, said rod being extensible and retractible to cause upward and downward swinging of said spaced link members and raising and lowering of said upper platform; said ram being mounted entirely below said lower platform upper surface for concealment and whereby said upper platform may rest against said lower platform; and (h) a manual pump and relief valve mounted on said lower platform adjacent said ram. 2. The veterinary lift table set forth in claim 1 including: (a) a stop secured to said lower platform and having lever means therewith operable to remove weight from some of said wheels to stop movement over said floor surface. 3. A veterinary lift table comprising: (a) a rectangular, patient supportive upper platform having a substantially planar upper surface, opposite ends and an underside frame having spaced, longitudinal channels forming tracks; (b) a rectangular lower platform of substantially equal dimensions to said upper platform and having a generally planar, obstruction free upper surface, opposite ends and an underside frame having spaced longitudinal channels forming tracks; (c) wheels mounted on said lower platform for movement over a ground surface; (d) stop means mounted on said lower platform and engageable with said ground surface for selectively inhibiting movement; (e) a scissor linkage mechanism extending between and connected to said upper and lower platforms to provide straight upward and downward movement of said upper platform relative to said lower platform; said scissor linkage mechanisms including a center link arm having an upper end pivotally affixed to said upper platform frame and a lower end having wheels rotatably connected thereto and received in said lower platform tracks; and spaced link arms having upper ends with wheels rotatably connected thereto and received in said upper platform tracks and lower ends pivotally affixed to said lower platform frame; said center link arm and said spaced link arms crossing and having pivotally interconnected mid-portions; (f) bell crank arms connected to and extending angularly from said spaced link arms lower ends, said bell crank arms having a rod extending therebetween and positioned below said spaced link rams lower ends; (g) an extensible and retractible power fluid ram positioned in said lower platform below and concealed by the surface thereof and having one end pivotally affixed to said frame and a second end pivotally affixed to said rod for swinging said spaced link arms upwardly and downwardly upon respective extension and retraction of said ram; and (h) a foot operated pump mounted on said lower platform at one end of said lower platform adjacent said ram and having a cover concealing said pump; (i) a relief valve mounted at said one end of said lower platform and having a foot operable lever thereon to release pressure in said ram and facilitate lowering of said upper platform against said lower platform. 4. A veterinary table comprising: (a) an upper platform having a planar, patient supportive, upper surface; (b) a lower platform positioned below and aligned with said upper platform and having a generally planar, obstruction free, upper surface, for said upper platform to rest upon; (c) a scissors linkage mechanism extending between and connected to said upper and lower platforms to provide straight upward and downward movement of said upper platform relative to said lower platform; said scissors linkage mechanism including a center link member having an upper end pivotally affixed to said upper platform and a lower end slidably mounted on said lower platform, and spaced link members with said center link member extending therebetween; said spaced link members having upper ends slidably mounted on said upper platform and lower ends pivotally affixed to said lower platform; one of said spaced link members having a lower end with a lever arm affixed thereto and extending therefrom; (d) actuation means engaging said scissors linkage mechanism and operable to vary an extension of same and to cause selected raising and lowering of said upper platform relative to said lower platform; (i) said actuation means including a power fluid ram pivotally connected to, and extending between, said lower platform and said lever arm and extensible and retractable to selectively cause said raising and lowering of said upper platform with respect to said lower platform. 5. The table as set forth in claim 4 wherein: (a) said lower platform has a frame and an underside; said lower platform having first and second end positions; (b) said ram has one end pivotally connected to said lower platform frame at said first end; and (c) said ram is positioned entirely below said upper surface. 6. The lifting table set forth in claim 5 wherein: (a) said lower platform has opposite ends, spaced sides, and a generally planar surface; (b) an elongate opening extends through said lower platform; and, said scissors linkage mechanism has lower end portions extending through said opening; (c) said ram is mounted at one of said ends of said lower platform and extends under said planar surface; (d) said actuation means includes a pump mounted at said one of said ends of said lower platform; (e) said pump includes a pump lever extending above said planar surface of said lower platform; and (f) said pump lever has a pad thereon for foot actuation for raising of said upper platform.

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