Patent application number | Description | Published |
20120134862 | SCROLL PUMP - The present invention relates to a scroll pump ( | 05-31-2012 |
20120134863 | SCROLL PUMP - The present application relates to a scroll pump ( | 05-31-2012 |
20120141311 | SCROLL PUMP - The present application relates to a scroll compressor comprising a scroll pumping mechanism which comprises an orbiting scroll ( | 06-07-2012 |
20130089419 | PUMP - The present invention relates to a pump ( | 04-11-2013 |
20140017062 | VACUUM PUMP WITH LONGITUDINAL AND ANNULAR SEALS - A multi-stage vacuum pump may include first and second half-shell components defining a plurality of pumping chambers and for assembly together along respective longitudinal extending faces; first and second end stator components for assembly at respective longitudinal seals for sealing between the first and second half-shell stator components when assembled together at the longitudinally extending faces; and annular seals for sealing between the first and second end stator components and the first and second half-shell stator components when assembled; wherein the longitudinal seals have end portions which abut against the annular seals for sealing therebetween and the first and second half-shell stator components have formations for resisting movement of the end portions away from the annular seals when the end portions are compressed between the first and second half-shell stator components. | 01-16-2014 |
20140154123 | Scroll Pump - The present invention relates to a scroll pump with two scrolls that are co-operable for pumping fluid from an inlet to an outlet on relative orbiting motion of the scrolls. Each scroll comprises a scroll base from which a scroll wall extends generally axially towards the base of the opposing scroll. A gas conduit having an inlet at a first location of the pumping channel and an outlet at a second location of the pumping channel allows over-compression at the first location of the pumping channel to be exhausted to the second location of the pumping channel. A one-way valve located in the gas conduit allows the passage of gas through the conduit from the conduit inlet to the conduit outlet when a predetermined pressure differential between the first and second locations of the pumping channel is generated during roughing when the scroll inlet is at or close to atmosphere. | 06-05-2014 |
20140286806 | MULTI-STAGE VACUUM PUMP - A multi-stage vacuum pump may include a sealing arrangement for sealing between the stator components of the pump. The end seals of the arrangement comprise an annular portion for sealing between end stator components and shell components and axial portions which extend from the annular portion and together with separate axial seals seal between the shell components. | 09-25-2014 |
20150192125 | SCROLL PUMP - The present invention is a scroll pump comprising two intermeshing scrolls arranged so that on relative orbital movement of the scrolls gas is pumped from an inlet to an outlet. The scrolls have a plurality of successive scroll wraps I, II, II, IV, V, VI between the inlet and the outlet. There is a single-start condition in which fluid is pumped from the inlet to the outlet along a single flow path extending through each of the scroll wraps in succession and a multi-start condition in which fluid is pumped from the inlet along a plurality of flow paths which extend in parallel through radially adjacent scroll wraps and converge to a single flow path prior to the outlet. A valve arrangement is operable for switching the scroll pump between the single-start and the multi-start conditions. | 07-09-2015 |
Patent application number | Description | Published |
20140326541 | MATERIALS HANDLING VEHICLE ESTIMATING A SPEED OF A MOVABLE ASSEMBLY FROM A LIFT MOTOR SPEED - A materials handling vehicle is provided including: a support structure including a fixed member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further includes lift apparatus to effect movement of the movable assembly relative to the support structure fixed member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve associated with the at least one ram/cylinder assembly. The control structure may estimate a speed of the movable assembly from a speed of the motor and calculate an updated pump volumetric efficiency using the estimated movable assembly speed and a determined movable assembly speed. | 11-06-2014 |
20140326542 | MATERIALS HANDLING VEHICLE MEASURING ELECTRIC CURRENT FLOW INTO/OUT OF A HYDRAULIC SYSTEM MOTOR - A materials handling vehicle is provided comprising: a support structure including a fixed member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further comprises lift apparatus to effect movement of the movable assembly relative to the support structure fixed member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve associated with the at least one ram/cylinder assembly. The control structure may measure an electric current flow into and/or out of the hydraulic system motor and reduce an operating speed of the hydraulic system motor if the electric current flow into and/or out of the hydraulic system motor is greater than or equal to a predetermined threshold value. | 11-06-2014 |
20140330488 | MATERIALS HANDLING VEHICLE MONITORING A PRESSURE OF HYDRAULIC FLUID WITHIN A HYDRAULIC STRUCTURE - A materials handling vehicle is provided comprising: a support structure including a fixed member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further comprises lift apparatus to effect movement of the movable assembly relative to the support structure fixed member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve associated with the at least one ram/cylinder assembly. The control structure may estimate a speed of the movable assembly from a speed of the motor and control the operation of the at least one valve using the estimated movable assembly speed. | 11-06-2014 |
20150344278 | MATERIALS HANDLING VEHICLE ESTIMATING A SPEED OF A MOVABLE ASSEMBLY FROM A LIFT MOTOR SPEED - A materials handling vehicle is provided comprising: a support structure including a first member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further comprises lift apparatus to effect movement of the movable assembly relative to the support structure first member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve associated with the ram/cylinder assembly. The control structure may estimate a speed of the movable assembly from a speed of the motor and may control the operation of the at least one valve using a comparison involving the estimated movable assembly speed and a determined speed, and the comparison may not involve use of an operator commanded speed. | 12-03-2015 |
Patent application number | Description | Published |
20110169900 | Process, Dispersions and Use - A process for preparing an encapsulated pigment dispersion suitable for use in an ink jet printing ink comprising the following steps in the order I) followed by II):
| 07-14-2011 |
20120065293 | Process, Pigment and Ink - A process for preparing an encapsulated carbon black pigment comprising cross-linking a dispersant with a cross-linking agent in the presence of a carbon black pigment and a liquid medium, thereby encapsulating the carbon black pigment within the cross-linked dispersant, wherein:
| 03-15-2012 |
20130265375 | Process, Dispersion and Ink - A dispersion of an encapsulated particulate solid is described, which is obtained by a process comprising the steps of providing a dispersion comprising a particulate solid, a liquid medium and a dispersant which is obtained or obtainable by copolymerising a monomer composition; and cross-linking the dispersant in the presence of the particulate solid and the liquid medium, thereby encapsulating each particulate solid particle within a cross-linked dispersant shell. | 10-10-2013 |
20150042732 | Polymeric Dispersants, Dispersions, Processes for Preparing Dispersions and the Use of Polymeric Dispersants - A polymeric dispersant obtained or obtainable by copolymerising a monomer composition comprising at least the components: i) benzyl (meth)acrylate; ii) propylene glycol (meth)acrylate; wherein the weight ratio of component i) to component ii) is greater than 10:1. | 02-12-2015 |
20150240095 | Process, Dispersions and Use - A process for preparing an encapsulated pigment dispersion suitable for use in an ink jet printing ink comprising the following steps in the order I) followed by II):
| 08-27-2015 |