A vacuum-assisted pole sander includes a sanding means attached at the end of the main pole, which in turn is supported in its middle section by a support pole. Both the support pole and the main pole are hollow and adjustable in length. The vacuum is transmitted from the sanding means of the device through the main pole to the vacuum connector in the supporting pole such that a vacuum can be attached on to ensure dust removal during operation. The combination of the support pole and the main po...

A variable camber sanding board includes a generally planar and flexible sanding base, which is adapted to receive abrasive sheet material. A front frame is pivotably linked to a mid handle via a front pivot connection. The front pivot connection includes a pin passing through coaxial bores formed in the mid handle and front frame. A mid handle includes a slotted attachment member which is pivotably secured to a trigger link, forming a middle pivot connection. The trigger link is pivotably secur...

Process for the production of optically-active di-[3-chloro-2-oxy-propyltrimethylammonium]-tartrate. Racemic 3-chloro-2-oxy-propyltrimethylammonium-chloride is converted by racemate resolution with optically-active tartaric acid into the optically-active di-[3-chloro-2-oxy-propyltrimethylammonium]-tartrate. Such optically-active tartrate compound is dissociated in tartaric acid to optically-active 3-chloro-2-oxy-propyltrimethylammonium-chloride and the latter is converted with inorganic cyanides...

A vacuum-assisted sanding block having a swiveling connection tube for connecting the dust removal channels of the sanding block top and bottom plates to a vacuum system. The manual sanding block also includes a plate system for suctioning away dust and other particulate matter created during the sanding process. This plate system includes a top plate for connecting the swiveling connection tube, a channeled bottom plate having apertures for suctioning away the sanding dust, and a center separat...

A vacuum attachment assembly is provided for use in combination with a corner sanding tool comprising a replaceable sander block of resilient foam material having a transverse cross section of the form of an isosceles triangle. The block is removably mounted on a carrier member which is inserted into a close-fitting chamber within the block body through a narrow entrance passage, the carrier being connected to a handle. The vacuum attachment comprises a C-shaped body having two parallel end port...

A bifurcated hose junction is provided for a pole mounted abrading device with vacuum assisted particulate removal. The junction is actuated by the movement of the sanding pad assembly. When a. short side of the rectangular sanding pad assembly is moved toward the tubular handle, the bifurcated hose junction is displaced laterally in relation to the linear axis of the handle. When a long side of the sanding pad assembly is moved toward the tubular handle, the bifurcated hose junction rotates in ...

Apparatus and methods allow difficulty accessible sites of a structure to be sand-blasted. Preferred sand-blasting systems are provided which include a sand-blasting fixture to support the a sand-blasting nozzle and a distal portion of the supply hose in such a manner that the spray of grit particulates may be directed against the difficultly accessible site of the structure. The fixture most preferably includes rigid proximal and distal support tubes joined to one another so as to establish an ...

A motor-driven hand band grinder has a frame, a movable grinding band defining a grinding plane, and an abutment having a plate part which determines a further plane, the plate part having a window-shaped opening provided over an edge of the grinding band and forming a guiding handle.

A grindstone having a vacuum system is applied to a pin chuck stepper. The vacuum system has a vacuum tube attached on the edge of the grindstone. When the grindstone moves on a pin chuck stage on the pin chuck stepper, the vacuum tube vacuums the pin chuck stage to free particles on the pin chuck stage.

A protective guard for use on a pneumatic tool known as a board file which includes a handle assembly and a board assembly that reciprocates back and forth relative to the handle assembly. The board assembly is held together by a nut and bolt located near each end thereof, and the handle assembly consists of a front handle and a rear handle mounted on a housing. A pinch point exists between a forward end of the housing and the forwardmost nut and bolt that holds the board assembly together. The ...