IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0976604
(2007-10-25)
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등록번호 |
US-7798371
(2010-10-11)
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우선권정보 |
CA-2569194(2006-11-29) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Riches, McKenzie & Herbert LLP
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
5 |
초록
▼
A simplified arrangement for the translation of movement as, for example, arcuate movement as from a lever into movement which is different as for example, in a linear direction with a slide element preferably comprising a piston in a piston pump. In accordance with a preferred aspect, the present i
A simplified arrangement for the translation of movement as, for example, arcuate movement as from a lever into movement which is different as for example, in a linear direction with a slide element preferably comprising a piston in a piston pump. In accordance with a preferred aspect, the present invention provides a bridging element which is disposed intermediate a pivoting lever and a linearly sliding slide element with the bridging member being retained in engagement with camming surfaces having an arcuate portion at a constant distance from the pivot axis of the lever and tangentially merging into a linear portion which is parallel to a longitudinal axis along which the slide element is slidable. The bridging member is slidable relative to the camming surface with the bridging member deforming to assume the shape of the camming surface where the bridge member engages the camming surface. Movement of the lever about the pivot axis moves a first end of the bridge member in an arcuate path where it engages the arcuate portion of the camming surfaces and moves a second end of the bridging member connected to the slide element in a linear direction along the linear portion of the camming surfaces.
대표청구항
▼
I claim: 1. A dispenser comprising: a housing, a dispensing mechanism including a slide element mounted to the housing for cyclical reciprocal movement in a linear direction about a straight longitudinal axis relative the housing between an extended position and a retracted position to dispense a f
I claim: 1. A dispenser comprising: a housing, a dispensing mechanism including a slide element mounted to the housing for cyclical reciprocal movement in a linear direction about a straight longitudinal axis relative the housing between an extended position and a retracted position to dispense a flowable material, a lever member pivotally mounted to the housing for pivotal movement about a pivot axis, the pivot axis substantially normal to the longitudinal axis, the housing having a camming surface disposed at a constant radius from the pivot axis, a flexible bridge member having a first end, a second end, a first side edge, a second side edge, and a cammed face, the bridge member coupled to the housing between the slide element and the lever with the first end of the bridge member engaging the lever, the second end of the bridge member engaging the element, and the cammed face of the bridge member urged into sliding engagement with the camming surface of the housing such that the bridge member between its first end and second end is deformed to assume the shape of the camming surface of the housing where the cammed face of the bridge member engages the camming surface of the housing, the bridge member slidable with the cammed face of the bridge member in engagement with the camming surface of the housing between: (a) a first position in which the slide element is in the extended position and the lever is in a first rotational position relative the pivot axis and, (b) a second position in which the slide element is in the retracted position and the lever is in a second rotational position rotated from the first rotational position about the pivot axis. 2. A dispenser as claimed in claim 1 wherein the camming surface extending from a first end to a second end, the camming surface having an arcuate portion and a linear portion, the arcuate portion extending from the first end to where it merges into the linear portion, the linear portion extending from the arcuate portion to the second end, over the arcuate portion the camming surface disposed at a constant radius from the pivot axis, over the linear portion the camming surface being parallel to the longitudinal axis and directed to intersect with the slide element, the camming surface over the linear portion comprising a tangential extension of the camming surface where the arcuate portion merges with the linear portion. 3. A dispenser as claimed in claim 2 wherein in the first position in which the slide element is in the extended position, the cammed face is entirely engaged with the linear portion of the camming surface and, in the second position in which the slide element is in the retracted position, the cammed face is entirely engaged with the arcuate portion of the camming surface. 4. A dispenser as claimed in claim 3 wherein in moving between the first position and the second position, the cammed face of the bridge member sliding relative the camming surface from being either fully engaged with the arcuate portion or the linear portion, respectively, to intermediate positions in which the cammed face is partially engaged with the arcuate portion and partially engaged with the linear portion. 5. A dispenser as claimed in claim 4 wherein the cammed face having a first end and a second end, in the first position, the first end of the cammed face is engaged with the arcuate portion of the camming surface proximate the first end of the camming surface and the second end of the cammed face is engaged with the linear portion of the camming surface spaced from the second end of the camming surface and, in the second position, the first end of the cammed face is engaged with the arcuate portion of the camming surface spaced farther from the first end of the camming surface than in the first position and the second end of the cammed face is engaged with the linear portion of the camming surface closer to the second end of the camming surface than in the first position. 6. A dispenser as claimed in claim 1 wherein the first end of the bridge member engaging the lever at a location on the lever at a distance from the pivot axis equal to the constant radius. 7. A dispenser as claimed in claim 6 wherein (i) movement of the lever member pivotally about the pivot axis in a first rotational direction from the first rotational position towards the second rotational position slides the bridge member with its cammed faces in engagement with the camming surface moving the second end of the bridge member parallel to the linear portion of the camming surface and applying forces substantially merely parallel to the longitudinal axis to the slide element to move the slide element linearly to the extended position, and (ii) movement of the lever member pivotally about the pivot axis in a second rotational direction opposite to the first rotational direction from the second rotational position towards the first rotational position slides the bridge member with its cammed faces in engagement with the camming surface moving the second end of the bridge member parallel to the linear portion of the camming surface and applying forces substantially merely parallel to the longitudinal axis to the slide element to move the slide element linearly to the retracted position. 8. A dispenser as claimed in claim 1 wherein the camming surface comprises an outer camming surface directed toward the pivot axis and the cammed face comprises an inner cammed face directed away from the pivot axis for engagement with the outer camming surface. 9. A dispenser as claimed in claim 8 wherein the outer camming surface over the arcuate portion is concave as directed toward the pivot axis, and the outer cammed face assumes a corresponding convex shape directed away from the pivot axis where the outer cammed face engages the arcuate portion. 10. A dispenser as claimed in claim 8 wherein the camming surface further comprises an inner camming surface directed away from the pivot axis and the cammed face comprises an inner cammed face directed toward the pivot axis for engagement with the outer camming surface, the inner camming surface to engage the inner cammed face on the bridge member to assist in maintaining the outer cammed face in engagement with the outer camming surface, the inner camming surface disposed toward the pivot axis relative the outer camming surface, the bridge member being disposed between the outer camming surface and the inner camming surface. 11. A dispenser as claimed in claim 1 wherein the bridge member has an inherent bias to assume an inherent shape condition in which the cammed face is in a particular shape, the bridge member being resiliently deformable from its inherent shape condition have its cammed face assume different shape configurations corresponding to the shape of the camming surface with which the cammed face is in engagement. 12. A dispenser as claimed in claim 11 wherein in its inherent shape condition, the bridge member assumes an inherent flat condition in which the cammed face is flat and planar. 13. A dispenser as claimed in claim 11 wherein in its inherent shape condition, the bridge member assumes an inherent curved condition in which the cammed face is at a constant radius from the pivot axis corresponding to the camming surface over the curved portion. 14. A dispenser as claimed in claim 1 wherein the bridge member extends in a longitudinal direction between its first end and its second, the bridge extending in a transverse direction normal to the longitudinal direction between its first side edge and its second side edge, the cammed surface being disposed in a plane which in the transverse direction is parallel to the pivot axis. 15. A dispenser as claimed in claim 14 wherein the bridge member comprises a planar member having a first face and a second face bordered by the first end, second end, the first side edge and the second side edge, the cammed face comprising one or both of the first face and second face. 16. A dispenser as claimed in claim 15 wherein the planar member is not compressible or stretchable along its longitudinal direction or its transverse direction, the planar member is flexible in directions normal to its longitudinal direction and its transverse direction. 17. A dispenser comprising: a housing, a dispensing mechanism including a slide element mounted for cyclical reciprocal movement in a linear direction about a straight longitudinal axis relative the housing between an extended position and a retracted position to dispense a flowable material, a lever member pivotally mounted to the housing for pivotal movement about a pivot axis, the pivot axis substantially normal to the longitudinal axis, the housing having a pair of spaced first and second side walls on either side of the element, each side wall generally disposed in a plane normal to the pivot axis, each side wall having a slotway defined between an inner camming surface and an outer camming surface extending in the plane of its respective side wall from a first end of the slotway to a second end of the slotway, each slotway being parallel to the other slotway, each slotway having a constant width between the between the inner camming surface and the outer camming surface, each slotway having an arcuate portion and a linear portion, the arcuate portion extending from the first end to where it merges into the linear portion, the linear portion extending tangentially from the arcuate portion to the second end, in the arcuate portion the inner camming surface is disposed at a first radius from the pivot axis and the outer camming surface disposed at a second radius from the pivot axis greater than the first radius, in the linear portion the inner camming surface and the outer camming surface are straight and linear and each extends parallel to the longitudinal axis, the inner camming surface over the linear portion comprising a tangential extension of the inner camming surface where the arcuate portion merges with the linear portion, the inner camming surface over the linear portion being parallel to the longitudinal axis, the outer camming surface over the linear portion comprising a tangential extension of the outer camming surface where the arcuate portion merges with the linear portion, the outer camming surface over the linear portion being parallel to the longitudinal axis, a bridge member comprising a planar member having a first face, a second face, a first end, a second end, a first side edge and a second side edge, the bridge member spanning between the side walls of the housing with portions of the bridge member proximate the first side edge received in the slotway of the first side wall for longitudinal sliding in the slotway of the first side wall and with portions of the bridge member proximate the second side edge received in the slotway of the second side wall for longitudinal sliding in the slotway of the second side wall, the bridge member longitudinally slidable in each slotway between: (a) a first position in which the first end of the bridge member is in the arcuate portion of the slotways proximate the first end of the slotways and the second end of the bridge member is in the slotways spaced towards the second end of the slotways from the first end of the bridge member, and (b) a second position in which the second end of the bridge member is in the linear portion proximate the second end of the slotways and the first end of the bridge member is in the slotways spaced towards the first end of the slotways from the second end of the bridge member, in moving from the first position to the second position, flexible portions of the bridge member moving from being within the arcuate portions of the slotways to being within the linear portions of the slotway, and in moving from the second position to the first position, the flexible portions of the bridge member moving from being within the linear portions of the slotways to being within the arcuate portions of the slotway, the flexible portions of the bridge member conforming to the shape of the section of the slotway in which it is disposed in by engagement between the inner surfaces of the slotways with the first face the bridge member and/or by engagement between the outer surfaces of the slotways with the second face the bridge member, the first end of the bridge member engaging the lever at a location on the lever at a distance from the pivot axis at or between the first radius and the second radius, the second end of the bridge member engaging the slide element, wherein: (i) movement of the lever member pivotally about a pivot axis in a first rotational direction slides the first end of the bridge member in the arcuate portions of the slotway and slides the second end of the bridge member in the linear portion of the slotways applying forces substantially merely parallel to the longitudinal axis to the slide element to move the slide element linearly to a first of the extended position and the retracted position, and (ii) movement of the lever member pivotally about a pivot axis in a second rotational direction opposite to the first rotational direction slides the first end of the bridge member in the arcuate portions of the slotway and slides the second end of the bridge member in the linear portion of the slotways applying forces merely parallel to the longitudinal axis to the slide element to move the slide element linearly to the other of the extended position and the retracted position. 18. A dispenser as claimed in claim 17 wherein (a) in the first position in which the first end of the bridge member is in the arcuate portion of the slotways proximate the first end of the slotways, the second end of the bridge member is in the linear portion spaced from the second end of the slotways, and (b) in the second position in which the second end of the bridge member is in the linear portion proximate the second end of the slotways, the first end of the bridge member is in the arcuate portion of the slotways spaced farther from the first end of the slotways than in the first position. 19. A dispenser as claimed in claim 18 wherein the flexible portion of the bridge member comprises a planar sheet material which is flexible for deformation by forces applied normal to its faces but not compressible by forces applied to its ends normal to its faces at the ends. 20. A dispenser as claimed in claim 1 wherein the dispensing mechanism comprises a piston pump including a piston chamber forming member, the slide element comprising a piston coaxially reciprocally movable in a piston chamber forming member. 21. A dispenser comprising: a housing, a dispensing Mechanism including a slide element mounted for cyclical reciprocal movement in a linear direction about a straight longitudinal axis relative the housing between an extended position and a retracted position to dispense a flowable material, a lever member pivotally mounted to the housing for pivotal movement about a pivot axis, the pivot axis substantially normal to the longitudinal axis, the housing having a pair of spaced first and second side walls on either side of the element, each side wall generally disposed in a plane normal to the pivot axis, each side wall having a slotway defined between an inner camming surface and an outer camming surface extending in the plane of its respective side wall from a first end of the slotway to a second end of the slotway, each slotway being parallel to the other slotway, each slotway having a constant width between the between the inner camming surface and the outer camming surface, each slotway having an arcuate portion, in the arcuate portion the inner camming surface is disposed at a first radius from the pivot axis and the outer camming surface disposed at a second radius from the pivot axis greater than the first radius, a bridge member comprising a planar member having a first face, a second face, a first end, a second end, a first side edge and a second side edge, the bridge member spanning between the side walls of the housing with portions of the bridge member proximate the first side edge received in the slotway of the first side wall for longitudinal sliding in the slotway of the first side wall and with portions of the bridge member proximate the second side edge received in the slotway of the second side wall for longitudinal sliding in the slotway of the second side wall, the bridge member longitudinally slidable in each slotway with the flexible portions of the bridge member conforming to the shape of the arcuate portion of the slotway in which it is disposed in by engagement between the inner surfaces of the slotways with the first face the bridge member and/or by engagement between the outer surfaces of the slotways with the second face the bridge member, the first end of the bridge member engaging the lever at a location on the lever at a distance from the pivot axis at or between the first radius and the second radius, the second end of the bridge member engaging the slide element, wherein: (i) movement of the lever member pivotally about a pivot axis in a first rotational direction slides the first end of the bridge member in the arcuate portions of the slotway and slides the second end of the bridge member to move the slide element linearly to a first of the extended position and the retracted position, and (ii) movement of the lever member pivotally about a pivot axis in a second rotational direction opposite to the first rotational direction slides the first end of the bridge member in the arcuate portions of the slotway and slides the second end of the bridge member to move the slide element linearly to the other of the extended position and the retracted position.
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