Abstract: A lapping system includes a shaft. A stabilizing member is coupled to the shaft. A lapping tool is coupled to the shaft and spaced apart on the shaft from the stabilizing member. An adjustable force device is coupled to the shaft, the stabilizing member, and the lapping tool. The adjustable force device is operable to be adjusted in order to cause the stabilizing member to support at least some of the weight of the lapping tool. The lapping system may be coupled to a valve body having a valve face to ensure alignment of the lapping tool and the valve face while providing a controlled, vertical force from the lapping tool to the valve face.

Abstract: An abrading device features a flexible abrading membrane supported by two supports. The device may be used in either linear or rotary configurations. The device can be used in conjunction with devices that impart continuous or vibratory linear or rotary motion.

Abstract: Portable sander, in particular an orbital sander, having an abrasive sheet carrier (1) and having clamping means (3) for firmly clamping opposite abrasive sheet ends of an abrasive sheet (21) which can be supported on the abrasive sheet carrier (1), wherein first clamping means (3) together with an abrasive sheet end clamped thereon can be moved away from the other abrasive sheet end, clamped by means of second clamping means (3), for tensioning the abrasive sheet (21), and the first clamping means (3) have spring elasticity. Provision is made for the first clamping means (3) to come against a rigid stop element (9) with prestress in an end clamping position.

Abstract: An abrading device features a flexible abrading membrane supported by two supports. The device may be used in either linear or rotary configurations. The device can be used in conjunction with devices that impart continuous or vibratory linear or rotary motion.

Abstract: A hand sanding block accepts the continuous sanding belts that are normally used on electrically powered belt sanders. Shoulder stops and biasing springs within the device allow for two positions of the block and keep the movable tensioning arm from coming apart from the block. One position, the withdrawn position, allows for easy removal, replacement, or adjustment of the continuous sanding belt. A second, or extended position, tensions the sanding belt to keep it in place on the sanding block.

Abstract: A tool for co-operating with a fixing device wherein the tool comprises a tool body in the form of a circular disk, with a central opening and a radially inwardly facing locking surface. The fixing device comprises at least one radially outwardly facing projection of a locking element, which can be actuated manually and with which the fixing device can be releasably connected to the tool. In the locking position the at least one radially outwardly facing projection of the fixing device engages over the inwardly facing locking surface of the tool. The tool body is axially secured and held non-rotatably relative to the fixing device. The at least one radially outwardly facing projection of the fixing device and a support for the tool are arranged axially displaceably relative to each other, wherein the axial displacement travel is blockable by a centrifugal force device.

Abstract: A hand-held, manually-operated, sanding tool for use with a replaceable sheet-like abrasive material, such as sandpaper, includes a base member and clamping mechanisms pivotally connected with opposed ends of the base member. The clamping mechanisms include tensioning members arranged to slidably engage angled contact surfaces provided on the ends of the base member opposite the clamping mechanisms to tighten the sheet-like abrasive material as it is installed on the tool.

Abstract: Disclosed is a grinding tool for a grinder comprising a rotary oscillating drive, the output shaft of which is driven so as to oscillate back and forth about its longitudinal axis and is configured for securing the grinding tool thereon. The grinding tool comprises a grinding pad which is made of a resilient material and encompasses at least one grinding surface that runs straight in one direction of extension and parallel to a tangent to the output shaft of the rotary oscillating drive.

Abstract: A power grinder, in particular an oscillating grinder (10), includes a platelike grinding sheet holder (14), on whose working face (15) a grinding sheet (16) can be braced. Secure clamping of the grinding sheet and easy changing of the grinding sheet are provided, because the grinding sheet (16) can be inserted between the clamping jaw (22) and the grinding sheet holder (14)—counter to the elastic prestressing of the clamping jaw (22)—and is firmly held increasingly strongly counter to the insertion direction in proportion to the tensile force engaging it.

Abstract: A resilient sanding mechanism is provided for sanding the contours of a working surface, such as an aircraft body. The mechanism comprises an elongate frame having a frame axis, a sander mechanism pivotally engaged to the frame and having a sanding surface disposed distal to the frame. A resilient biasing apparatus is engageable to the sander mechanism and to the frame, for biasing the sander mechanism sanding surface in a predetermined orientation with respect to the frame axis.

Abstract: A sanding block includes a generally rectangular base housing upon which a multiply contoured generally convex hand grip is secured. The hand grip further defines inwardly extending concave portions which facilitate easy and secure grip by the user. An over-center lever clamp mechanism is operative at each end of the sanding block to secure the opposed ends of a sandpaper sheet in a releasable attachment.

Abstract: A clamping sander for receiving and holding a sheet of sandpaper, including a chassis plate having an upper surface and a lower surface, and a clamp plate having an upper surface and a lower surface. The clamp plate is coupled to the chassis plate and movable between a released position, spaced from the chassis plate, and a clamped position with the lower surface engaging the upper surface of the chassis plate. A clamping mechanism is carried by the chassis plate and the clamp plate for moving the clamp plate between the released position and the clamped position.

Abstract: A sanding block includes a generally rectangular base housing upon which a multiply contoured generally convex hand grip is secured. The hand grip further defines inwardly extending concave portions which facilitate easy and secure grip by the user. An over-center lever clamp mechanism is operative at each end of the sanding block to secure the opposed ends of a sandpaper sheet in a releasable attachment.

Abstract: A rotary finishing tool, such as a buffing pad, utilizes a connector assembly for demountable attachment to a powered rotary backing plate. The finishing tool is attached to the front face of a backing disc and the rear face of the backing disc includes a first piece of the connector assembly, the second piece of which is carried by the backing plate. The first and second connector pieces include complementary driving surfaces and complementary locking surfaces which respectively interengage in response to linear movement bringing the two connector pieces together and relative radial movement between the locking surfaces which are preferably resiliently biased.

Abstract: The invention relates to a device for sharpening knives, scissors or other cutting tools with at least on abrasive grinding element which is arranged in a housing pushing against a resilient force. The aim of the invention is to provide a device that is simple in its design and that is characterized by its versatility. To this end, the grinding element is configured as a strip structure and is arranged on blade-shaped support which in turn is resiliently guided along the housing.

Abstract: An attachment for an oscillatory sanding or abrading device has a pair of flexible support members for supporting the sanding or abrading material. The initial radius of curvature of the flexible support member may be adjusted by a spring loaded adjustment mechanism. An opposing pair of circular recesses formed in opposing faces of the flexible sheets allows for replacement of the springs. The recesses can be formed at both ends of the flexible sheets. Adjustment of the initial radius of curvature is accomplished by inserting springs of varying sizes into one or both pairs of recesses. The radius of curvature of the flexible support member during the sanding process is then a function of the spring constant of the spring used and the applied pressure. The device thus uses a series of discrete adjustments each of which covers a range of contoured shapes.

Abstract: A clamping device a sanding tool is comprised of a fixing body, a spring, a clamping plate, a pressing block and a buffer body; wherein, the fixing body is a rectangular base on the proper position of the center of which is installed with a high projected handle, while grooves are installed on the two sides of the base near the edge portion, a fixing stud is installed between the handle and the grooves, a buffer body is adhered on the bottom of the base, a spring and a clamping plate are attached on the stud; the distal end of the fixing stud is installed with a pin for engaging with said pressing block; by the upwards or downwards pressing force of the pressing block, the sand paper may be fixed.

Abstract: A finishing tool useful in sanding, abrading and like activities. The tool comprises a block having slots of a predetermined size and shape disposed in opposite ends of the block. The slots are adapted to receive matching holding elements so that a predetermined length of finishing material, such as sandpaper, may be placed across the support surface of the block, the ends of sandpaper being inserted and securely held between the surfaces of the holding elements and the slots. The holding elements are pulled inwardly by retraction elements such as one or more lengths of an elastic material such as a rubber hose interconnecting the holding elements. Passages are provided in the block for housing such elastic members.

Abstract: A hand sanding block is formed with two blocks, which may be of equal or unequal lengths of like cross section and disposed in coplanar relationship with opposed inner ends. The blocks are freely movable towards and away from each other almost to the point of separation, by means of a pair of spaced dowel pins projecting from one block for telescopic engagement in corresponding spring loaded sockets in the other block and are normally held apart in spaced relationship by the springs in the sockets. For mounting and removing an endless sanding belt the blocks are pressed together so the inner ends are in abutting relationship and once the belt is in place, the holding pressure is released so the blocks can move apart to provide tension on the belt.