Abstract: Technologies are described herein for a drag recovery scheme. In various examples, a recovery engine is placed within a vortex flow of air caused by the impingement of air upon a nacelle of a main engine. The propeller of the recovery engine can use the vortex flow of air to provide additional thrust the aircraft, thus reducing the load on the main engines or providing an increased velocity.

Abstract: Systems and methods for controlling measurement units for a medical scale. One system includes a removable head unit configured to couple to a medical scale platform. The removable head unit includes a human machine interface (HMI) and an electronic processor coupled to the human machine interface. The electronic processor is configured to receive, via the HMI, a first user input selecting a permanent lock mode. The electronic processor is configured to, in response to receiving the user input, present a first authentication request and receive a second user input including a first authentication token. The electronic processor is configured to, when the first authentication token is valid, present a measurement unit selection prompt. The electronic processor is configured to receive a second user input selecting a measurement unit and, in response to receiving the second user input, activate the permanent lock mode based on the selected measurement unit.

Abstract: Systems and methods for electronic scale auto-zeroing. One example system includes a load cell coupled to a platform of the scale and an electronic processor coupled to the load cell. The processor is configured to receive an activation command activating the scale and, responsive to receiving the command, initiate a powerup zeroing function. The processor is configured to receive, from the load cell, a first signal indicative of a force applied to the platform and, responsive to receiving the first signal, determine whether the force applied to the platform of the scale exceeds a threshold. The processor is configured to, responsive to determining that the force exceeds the threshold: cancel the powerup zeroing function, and calculate a weight based on the first signal. The processor is configured to, responsive to determining that the force does not exceed the threshold, complete the powerup zeroing function.

Abstract: Systems and methods for controlling measurement units for a medical scale. One system includes a removable head unit configured to couple to a medical scale platform. The removable head unit includes a human machine interface (HMI) and an electronic processor coupled to the human machine interface. The electronic processor is configured to receive, via the HMI, a first user input selecting a permanent lock mode. The electronic processor is configured to, in response to receiving the user input, present a first authentication request and receive a second user input including a first authentication token. The electronic processor is configured to, when the first authentication token is valid, present a measurement unit selection prompt. The electronic processor is configured to receive a second user input selecting a measurement unit and, in response to receiving the second user input, activate the permanent lock mode based on the selected measurement unit.

Abstract: Systems and methods for controlling measurement units for a medical scale. One system includes a removable head unit configured to couple to a medical scale platform. The removable head unit includes a human machine interface (HMI) and an electronic processor coupled to the human machine interface. The electronic processor is configured to receive, via the HMI, a first user input selecting a permanent lock mode. The electronic processor is configured to, in response to receiving the user input, present a first authentication request and receive a second user input including a first authentication token. The electronic processor is configured to, when the first authentication token is valid, present a measurement unit selection prompt. The electronic processor is configured to receive a second user input selecting a measurement unit and, in response to receiving the second user input, activate the permanent lock mode based on the selected measurement unit.

Abstract: Systems and methods for controlling measurement units for a medical scale. One system includes a removable head unit configured to couple to a medical scale platform. The removable head unit includes a human machine interface (HMI) and an electronic processor coupled to the human machine interface. The electronic processor is configured to receive, via the HMI, a first user input selecting a permanent lock mode. The electronic processor is configured to, in response to receiving the user input, present a first authentication request and receive a second user input including a first authentication token. The electronic processor is configured to, when the first authentication token is valid, present a measurement unit selection prompt. The electronic processor is configured to receive a second user input selecting a measurement unit and, in response to receiving the second user input, activate the permanent lock mode based on the selected measurement unit.

Abstract: Systems and methods for controlling measurement units for a medical scale. One system includes a removable head unit configured to couple to a medical scale platform. The removable head unit includes a human machine interface (HMI) and an electronic processor coupled to the human machine interface. The electronic processor is configured to receive, via the HMI, a first user input selecting a permanent lock mode. The electronic processor is configured to, in response to receiving the user input, present a first authentication request and receive a second user input including a first authentication token. The electronic processor is configured to, when the first authentication token is valid, present a measurement unit selection prompt. The electronic processor is configured to receive a second user input selecting a measurement unit and, in response to receiving the second user input, activate the permanent lock mode based on the selected measurement unit.

Abstract: Systems and methods for controlling a scale. One system includes a first touchless button, a first visual indicator associated with the first touchless button, a second touchless button, coupled to an electronic processor. The electronic processor is configured to receive, from the first touchless button, a first signal indicative of a first gesture. The electronic processor is configured to, in response to receiving the first signal, switch second touchless button from a dormant mode to an active mode and activate the first visual indicator. The electronic processor is configured to receive, from the second touchless button, a second signal indicative of a second gesture. The electronic processor is configured to, in response to receiving the second signal, execute a function of the scale associated with the second touchless button. The electronic processor is configured to switch the second touchless button from the active mode to the dormant mode.

Abstract: A grip assembly includes a base member, an intermediate member and a first grip arm removably coupled to and independently positionable relative to the intermediate member. A second grip arm is also removably coupled to an independently positionable relative to the intermediate member.

Abstract: Systems and methods for controlling a scale. One system includes a first touchless button, a first visual indicator associated with the first touchless button, a second touchless button, coupled to an electronic processor. The electronic processor is configured to receive, from the first touchless button, a first signal indicative of a first gesture. The electronic processor is configured to, in response to receiving the first signal, switch second touchless button from a dormant mode to an active mode and activate the first visual indicator. The electronic processor is configured to receive, from the second touchless button, a second signal indicative of a second gesture. The electronic processor is configured to, in response to receiving the second signal, execute a function of the scale associated with the second touchless button. The electronic processor is configured to switch the second touchless button from the active mode to the dormant mode.

Abstract: A grip assembly includes a base member, an intermediate member and a first grip arm removably coupled to and independently positionable relative to the intermediate member. A second grip arm is also removably coupled to an independently positionable relative to the intermediate member.

Abstract: Systems and methods for controlling measurement units for a medical scale. One system includes a removable head unit configured to couple to a medical scale platform. The removable head unit includes a human machine interface (HMI) and an electronic processor coupled to the human machine interface. The electronic processor is configured to receive, via the HMI, a first user input selecting a permanent lock mode. The electronic processor is configured to, in response to receiving the user input, present a first authentication request and receive a second user input including a first authentication token. The electronic processor is configured to, when the first authentication token is valid, present a measurement unit selection prompt. The electronic processor is configured to receive a second user input selecting a measurement unit and, in response to receiving the second user input, activate the permanent lock mode based on the selected measurement unit.

Abstract: A method for producing a twist drill has the following steps. A blank is shaped to form a semi-finished product. The semi-finished product is formed from a core, coaxial with the drill axis, having a radius and a number of webs, arranged on the core, having a height. The semi-finished product has a constant cross section along the drill axis. The webs have a first portion which adjoins the core and in which a width of the web remains constant or decreases in the circumferential direction with increasing radial distance from the drill axis. The webs have a second portion which adjoins the first portion and in which the width of the web increases in the circumferential direction with increasing radial distance from the drill axis. The webs of the semi-finished product are shaped into helical segments using a plurality of rolling tools that annularly enclose the semi-finished product and roll on the webs along the drill axis. The rolling tools have teeth that are inclined with respect to the drill axis.

Abstract: The twist drill (1) has a drilling head (3), a continuous two-flute, three-flute to six-flute helix (4) and an insertion end (5) that are arranged consecutively on a drill axis (2). The helix (4) has a radial outer dimension (18) that varies periodically two, three to six times per revolution around the drill axis (2). The invention also relates to a production method for such a drill.

Abstract: A method for producing a twist drill has the following steps. A blank is shaped to form a semi-finished product. The semi-finished product is formed from a core, coaxial with the drill axis, having a radius and a number of webs, arranged on the core, having a height. The semi-finished product has a constant cross section along the drill axis. The webs have a first portion which adjoins the core and in which a width of the web remains constant or decreases in the circumferential direction with increasing radial distance from the drill axis. The webs have a second portion which adjoins the first portion and in which the width of the web increases in the circumferential direction with increasing radial distance from the drill axis. The webs of the semi-finished product are shaped into helical segments using a plurality of rolling tools that annularly enclose the semi-finished product and roll on the webs along the drill axis. The rolling tools have teeth that are inclined with respect to the drill axis.

Abstract: The twist drill (1) has a drilling head (3), a continuous two-flute, three-flute to six-flute helix (4) and an insertion end (5) that are arranged consecutively on a drill axis (2). The helix (4) has a radial outer dimension (18) that varies periodically two, three to six times per revolution around the drill axis (2). The invention also relates to a production method for such a drill.

Abstract: A concrete screw is disclosed. The concrete screw includes a shank and a thread disposed on the shank with a thread helix and a thread root. A cutting recess is disposed in a tip region of the shank where the cutting recess runs at least in sections within the thread root and without interrupting the thread helix. A rolling die for producing the concrete screw and a method for producing the concrete screw are also disclosed.

Abstract: A method for producing a concrete screw is disclosed. The lateral surface of the shaft includes, on the end of the shaft, at least one cut-out recess. A piece of rod is provided as a workpiece, at least one threaded coil is formed on the lateral surface in a thread rolling process in which two profiled rolling tools act on the workpiece, and at least one recess is formed in the lateral surface on an end area of the workpiece. The recess, when seen in the cross-section of the workpiece, is diametrically opposite an area of the workpiece free of recesses such that initially the recess is formed in the lateral surface and subsequently, the threaded coil is formed on the lateral surface of the workpiece, and at least one of the rolling tools also acts upon the end area with the recess during the thread rolling process.

Abstract: A method for producing a concrete screw is disclosed. The method includes providing a wire piece as a workpiece, forming a thread helix on a lateral surface of the workpiece, and providing a depression in the lateral surface of the workpiece by a forming process.

Abstract: An anchor bolt for an expansion anchor, and a method of producing the anchor bolt, is disclosed. The anchor bolt has an expansion body which is arranged coaxially with respect to an axis, where a circumferential surface of the expansion body has ribs and grooves in an alternating manner in a circumferential direction. Top surfaces of the ribs diverge from the axis in a direction along the axis. Bottom surfaces of the grooves converge in the direction of the axis.