Electroimpact, Inc.

The United States of America As Represented by the United States

John L Hartmann

Peter B Zieve

Scott Charles Tomchick

Michael D Assadi

Peter W Janicki

Dariush K Arasteh

Stephen E Selkowitz

Peter R Vogeli

A collar-swaging die includes two portions which are slidable relative to each other for alignment of the collar onto the exposed end of the bolt.

Electromagnetic bolt insertion and collar swaging system

The bolt insertion apparatus includes a driver which is partially contained within an interior volume defined by an inner cylindrical sleeve which is secured at its front end to a forward mass portion of the apparatus. An actuator coil is also positioned within the interior volume for electromagnetic actuation of the driver. An outer cylindrical sleeve includes a recoil mass at the rear end thereof, with the coil extending forwardly from the recoil mass into the interior volume of the inner sleeve. The outer sleeve is movable longitudinally relative to the inner sleeve. A spacer element is selectively removable between a forward end of the apparatus and a clamp-up nosepiece member. The apparatus is initially positioned such that there is a gap between a tool on the end of the driver and the head of the bolt. The collar-swaging apparatus includes a driver element mounted for longitudinal movement. A collar transfer arm is mounted for rotational movement into and out of the longitudinal axis of movement of the driver, for insertion of a collar onto a die which is attached to the driver. A collar-swaging die includes two portions which are slidable relative to each other for alignment of the collar onto the exposed end of the bolt. A collar-swaging apparatus includes an inner sleeve and an outer sleeve which are arranged relative to each other so that recoil of the recoil mass, with corresponding movement of the inner sleeve and a hardstop element, results in contact between the hardstop and the driver, and subsequent rearward movement of the driver results in the removal of swaging tool from the collar.

Electromagnetic bolt insertion system

The apparatus includes a riveting assembly (10) which includes a rivet die (18) having a concave configuration which is brought into contact with one end of a rivet to be upset. The die (18) is driven into a rivet end by a rivet ram (16) a first time, resulting in an interference fit between the rivet shank and the part being riveted. When the die (18) is withdrawn, the newly formed rivet head will in some instances expand outwardly away from the surface of the part, leaving a gap between the formed end of the rivet and the part. A second strike assembly includes an L-shaped second strike element (28) which is moved between the die (18) and the rivet head. The ram (16) is then driven a second time, forcing the second strike element (28) against the formed end of the rivet, forcing the formed end of the rivet to flow outwardly and toward the part, resulting in the filling of the gap between the rivet head and the surface of the part.

Apparatus and method to prevent rivet shanking

A two axis tracer (10) includes a back plate (34) and a front plate assembly (49) which includes a single sensing member (24) at the top end of which is a mushroom-shaped cap portion (28). Mounted on back plate (34) is a slider assembly (38) which moves in one direction between the front and rear edges of the back plate (34). The front plate assembly (49) is mounted to the slider assembly (38). A first air cylinder (60) operating a lever arm (52) provides movement of the sensing member (24) in the other direction, which is perpendicular to the one direction. A second air cylinder (68) includes an extendable rod, the end of which is secured to the back plate (34), providing movement of the front plate assembly (49) by action of the slider assembly (38). The top and peripheral edge of the cap portion (28) contact surfaces of the part to be worked in the two directions.

Two axis tracer for fastener operations

An improved insulated glazing unit is provided which can attain about R5 to about R10 thermal performance at the center of the glass while having dimensions about the same as those of a conventional double glazed insulated glazing unit. An outer glazing and inner glazing are sealed to a spacer to form a gas impermeable space. One or more rigid, non-structural glazings are attached to the inside of the spacer to divide the space between the inner and outer glazings to provide insulating gaps between glazings of from about 0.20 inches to about 0.40 inches. One or more glazing surfaces facing each thermal gap are coated with a low emissivity coating. Finally, the thermal gaps are filled with a low conductance gas such as krypton gas.

Growing community of inventors

Seattle, WA, United States of America

John L Hartmann