Stockholm, Sweden
Stockholm, Sweden

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Patent
Husqvarna | Date: 2017-01-17

A robotic work tool system, comprising a robotic work tool, said robotic work tool comprising a controller being configured to cause said robotic work tool to operate in a first operating mode, which first operating mode is based on a current position, said current position being determined based on signals received from a position determining device, such as Global Navigation Satellite System device; determine that said received signals are not reliable, and in response thereto cause said robotic work tool to operate according to second operating mode, which second operating mode is not based on a current position being determined based on said received signals.


Patent
Husqvarna | Date: 2017-03-15

A power tool (100), such as a chainsaw, comprising means (230) for driving said power tool (100) and a controller (210). The power tool comprises a movement sensor (220) and the controller (210) is configured to receive a signal from said movement sensor (220), determine if said signal is a signal indicating a movement, determine a time wherein no signal indicating a movement is received, determine if said time exceeds a time period, and if so, disable said driving means (230).


Patent
Husqvarna | Date: 2017-05-03

A robotic work tool system (200) comprising a charging station (210) and a robotic work tool (100), said robotic work tool (100) comprising a position determining device (190) and a controller (210), wherein said controller (210) is configured to determine a current position for the robotic work tool (100) based on the position determining device (190), determine a first distance from the current position to said charging station (210), cause said robotic work tool (100) to travel a predetermined distance or for a predetermined time, determine a new current position for the robotic work tool (100) based on the position determining device (190), determine a second distance from the new current position to said charging station (210), determine if the second distance is larger than the first distance; and if so, cause the robotic work tool (100) to turn towards the charging station (210).


Method for optimizing the current A/F settings when accelerating the engine over at least one defined speed interval, the method comprising comparing at least two acceleration times of different A/F ratio that each encompasses at least one defined speed interval. Adjusting the A/F ratio based on the comparison.


Patent
Husqvarna | Date: 2017-01-25

A water application device (10, 100) may include a main body (20, 110) graspable along a handle portion (22, 119) thereof by an operator, an operable member (30, 140), and a flow channel. The main body (20, 110) may house a flow control assembly (50) configured to enable the device to execute a control function relative to flow of water through the device. The operable member (30, 140) may be operably coupled to the main body to interface with the flow control assembly (50) to alternately provide flow and stop flow through the device. The flow channel may be formed inside the main body to define a flow path between an inlet portion (26, 114) and an outlet portion (24, 112) of the device. The flow channel may define a plurality of critical areas in which water is enabled to collect when the water application device is not applying water. At least a first compensator (302) may be provided in a first critical area and at least a second compensator (302, 304, 308) may be provided in a second critical area. The first and second compensators (302, 304, 306, 308) may include compressible material configured to enable the first and second compensators to be compressed within the first and second critical areas, respectively, to increase an effective volume of the first critical area and the second critical area.


Patent
Husqvarna | Date: 2017-01-25

A water distribution system (10) may include a pump assembly (30) and a controller (60) that controls operation of the pump assembly. The controller (60) may be configured to control cycling of the pump assembly on and off based on pressure and flow conditions detected in the system, track a first period of time, count a number of on/off cycles of the pump assembly, determine whether to make a state change based on the number of on/off cycles and the first period of time, and, in response to determining to make the state change, set a timer configured to count a second period of time that is longer than the first period of time and counting on/off cycles during discrete periods of time for the second period of time to initiate a fault response in response to a predetermined number of on/off cycles being detected during each discrete period of time during the second period of time or if the second period of time has lapsed, or initiate a recovery from the state change in response to the predetermined number of on/off cycles not being detected during at least one discrete period of time during the second period of time.


Patent
Husqvarna | Date: 2017-03-01

A blower (100) may include a housing (110), a blower tube (150), a fan assembly (160) and an eyelet (190). The housing (110) may include a handle portion (144) defining a handle aperture (145). The blower tube (150) may extend forward from the housing (110) and define a tube axis (152). The fan assembly (160) may be operably coupled to the blower tube (150) to force air through the blower tube (150) responsive to operation of a motor (120). The eyelet (190) may be disposed on a side portion of the housing (110) proximate to the handle aperture (145).


Patent
Husqvarna | Date: 2017-01-11

A hose coupling device (100) comprising:a main body (110) defining a through channel (112) for water flow between a first end (114) of the device (100) to a second end (116) of the device (100), the through channel (112) extending along an axis (118) of the device (100), the main body (110) further defining a coupler receiver portion (140) disposed at the first end (114) of the device (100) and a hose coupling portion (150) disposed at the second end (116) of the device (100); a sleeve portion (120) slidably engaging the main body (110) to releasably engage a coupler received in the coupler receiver portion (140) based on movement of the sleeve portion (120) in an axial direction (152); and a screw nut (130) disposed proximate to the hose coupling portion (150) to selectively facilitate engagement of the hose coupling portion (150) with a hose (170) inserted at the hose coupling portion (150) by exerting a clamping force on the hose (170) responsive to tightening of the screw nut (130), wherein the screw nut (130) comprises an annular body having first end (200) and a second end (210), wherein an internal periphery of the annular body includes a threaded portion (212) at the first end (200) of the annular body, wherein an external periphery of the annular body includes a haptic region (180) extending around the external periphery, the haptic region (180) being disposed at a portion of the external periphery that is spaced apart from both the first end (200) and the second end (210) of the annular body, the haptic region (180) extending over less than half of a length of the screw nut (130 in the axial direction (152).


A cutting and dust or slurry collecting assembly that comprises: a) a circular saw blade (4) b) a blade guard (5) c) a cover device (6), and the cover device (6) has a front end (31), a rear end (32), a top surface (34), a bottom surface (36), elongated sidewalls (35), and a longitudinal passage (45,46) for the saw blade, d) the blade guard (5) and the cover device (6) being pivotally connected or connectable to one another via a hinge (40) in or adjacent to a lower rear corner of the blade guard (5), such that the cover device and the blade guard can be turned in relation to each other, e) a discharge member (52) is provided at the rear of said hinge and has an outlet (58) which can be connected to a vacuum source, f) a connection member (12) connects the discharge member (52) with at least one of the longitudinal passage (45, 46) and the cut created rear of the longitudinal passage, g) that the direction of rotation of the saw blade (4) is such that a circumferential part of the blade which has passed beyond the bottom surface of the cover device will move in a direction upwards-rearward towards the bottom surface In particular a rear arm distance (LR) between the hinge (40) and the rear end (32) is bigger than 0.2R and preferably bigger than 0.25R, thereby enabling a turning of the cover device (6) by pressing the rear end (32) towards the structure to be cut.


Grant
Agency: European Commission | Branch: H2020 | Program: IA | Phase: NMP-02-2015 | Award Amount: 8.65M | Year: 2016

Wear and corrosion of materials causes losses of 3-4% of GDP in developed countries and billions of Euros are spent annually on capital replacement and control methods for wear and corrosion infrastructure. As a result many important industries are dependent on surface engineering of protective coatings, making it one of the main critical technologies underpinning the competitiveness of EU industry. There are 2 main techniques that dominate the protective coatings sector: hard chromium (HC) plating and thermal spray (TS). However, HC plating faces a series of issues with most important the extremely negative health and environmental impact leading to the EC restriction of this method for using Cr\6 by the end of 2017. Similarly, recent toxicity studies concerning Co-WC cermet applied by TP have revealed that Co-WC particles are toxic in a dose/time-dependent manner. Consequently, there is the necessity of finding new, less hazardous methods and materials exhibiting the same or better performance compared to existing ones. The PROCETS project will took advantage of the use of nano-particles for production of composite coatings with superior properties compared to those of HC produced by electroplating or to Co-WC produced by TS. These novel nano-particles will be incorporated into existing production lines after appropriate modifications. The new procedures will be easily transferred by minor adaption to the present electroplating and TS facilities, and will combine flexibility and mass customization abilities, restrict environmental and health hazards and finally be available at acceptable cost. Thus, PROCETS main target is to deliver protective coatings covering a wide range of applications such as automotive, aerospace, metal-working, oil and gas and cutting tools industries via thermal spray and electroplating methods by utilizing more environmental friendly materials, compared to the currently used.

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