Abstract: A handheld power tool (40) is disclosed comprising a power source (38) configured to power a tool (30) of the handheld power tool (40) and a lubrication pump (1). The lubrication pump (1) comprises a pump chamber unit (4) comprising a pump chamber (4?) with an inlet (11) connected to the lubricant tank (2) and an outlet (12) connected to the lubrication portion (3), a pump member (5?) arranged inside the pump chamber unit (4), and an electric motor unit (6) configured to rotate the pump member (5?) relative to the pump chamber unit (4) such that the pump member (5?) pumps lubricant from the inlet (11) to the outlet (12). The handheld power tool (40) further comprises a sensor assembly (7) configured to provide data indicative of the rotational position of the pump member (5?) relative to the pump chamber unit (4).

Abstract: The present disclosure relates to a lubrication monitoring system configured to monitor a supply of lubricant in a hand-held cutting tool having a cutting unit. A lubricant tank and a conduit are configured to duct a flow of lubricant from the tank to the cutting unit. The lubrication monitoring system comprises a heating element and a sensor arrangement, the heating element being configured to heat the lubricant flow. The sensor arrangement comprises a first sensor located at the flow, upstream of the heating element, and a second sensor located at said flow, downstream of the heating element. The lubrication monitoring system outputs a monitoring signal based on a sensed temperature difference between the first and second sensors.

Abstract: The present disclosure relates to a lubrication monitoring system (15) configured to monitor a supply of lubricant in a hand-held cutting tool (1) having a cutting unit (3, 5). A lubricant tank (41) and a conduit (45) are configured to duct a flow of lubricant from the tank (41) to the cutting unit (3, 5). The lubrication monitoring system (15) comprises a heating element (29) and a sensor arrangement (31, 33), the heating element (29) being configured to heat the lubricant flow. The sensor arrangement comprises a first sensor (31) located at the flow, upstream of the heating element (29), and a second sensor (33) located at said flow, downstream of the heating element. The lubrication monitoring system outputs a monitoring signal based on a sensed temperature difference between the first and second sensors (31, 33).

Abstract: The present disclosure relates to a battery-powered chainsaw (1) comprising a cutting tool in the form of a saw chain (4) running on a guide bar, a front handle (7) at least partially extending transverse to the elongation of the guide bar and a rear handle (5) extending, at least partially, approximately in the elongated direction of the guide bar. A battery-operated heating unit comprising a first heating element (15) in the rear handle, a second heating element (13) in the front handle, and a temperature sensor (17) located in either of the rear or front handle. The heating unit (19) is configured to provide power to the first and second heating element based on a reading from the temperature sensor (17). Upon activation, a temporary power boost is provided to the first and second heating elements and subsequently a steady state power, lower than the power of the power boost.

Abstract: The present disclosure relates to a lubrication monitoring system (15) configured to monitor a supply of lubricant in a hand-held cutting tool (1) having a cutting unit (3, 5). A lubricant tank (41) and a conduit (45) are configured to duct a flow of lubricant from the tank (41) to the cutting unit (3, 5). The lubrication monitoring system (15) comprises a heating element (29) and a sensor arrangement (31, 33), the heating element (29) being configured to heat the lubricant flow. The sensor arrangement comprises a first sensor (31) located at the flow, upstream of the heating element (29), and a second sensor (33) located at said flow, downstream of the heating element. The lubrication monitoring system outputs a monitoring signal based on a sensed temperature difference between the first and second sensors (31, 33).