An apparatus for friction welding a workpiece to a substrate, comprising an actuator producing a linear oscillating motion, a platform for supporting the workpiece, and a slide mechanism between the actuator and the platform. The slide mechanism converts the linear oscillating motion of the actuator into an arcuate oscillating motion of the platform. The slide could comprise a base and a guide engaging the platform.
An example diffusion bonding machine includes a support structure configured to receive first and second die sets. A heat transfer device is arranged near the support structure and is configured to transfer heat relative to the die sets. A mechanism is configured to separate the die sets from one another during heat transfer. In one example method of diffusion bonding, heat is transferred relative to a space between die sets. The die sets are supported on the support structure, and a load is applied to the die sets to diffusion bond a component within each of the die sets.
United Technologies Corporation - Hartford CT, US Richard D. Trask - Simsbury CT, US
Assignee:
UNITED TECHNOLOGIES CORPORATION - Hartford CT
International Classification:
B23K 20/02
US Classification:
228193
Abstract:
An example diffusion bonding machine includes a support structure configured to receive first and second die sets. A heat transfer device is arranged near the support structure and is configured to transfer heat relative to the die sets. A mechanism is configured to separate the die sets from one another during heat transfer. In one example method of diffusion bonding, heat is transferred relative to a space between die sets. The die sets are supported on the support structure, and a load is applied to the die sets to diffusion bond a component within each of the die sets.
Method For Linear Friction Welding And Product Made By Such Method
Herbert L. Walker - Glastonbury CT Stephen A. Hilton - Vernon CT JoAnn Barbieri - Vernon CT John P. Fournier - Portland CT Richard D. Trask - Simsbury CT
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
F01D 530
US Classification:
416213R
Abstract:
A process for joining a base for an airfoil to a disk for an integrally bladed rotor stage in a gas turbine engine includes providing a disk having a radially outer rim with a slot defined therein by a recessed surface, and further includes providing a base having a longitudinally extending root portion facing opposite a longitudinally extending support portion for supporting the airfoil. The root portion has a root surface and the support portion has an outer surface. The process further includes bringing the root surface of the root portion into contact with the recessed surface bounding the slot, applying pressure and relative movement between the base and the rim to achieve during welding, substantial contiguity between the root surface and the recessed surface over the area of the recessed surface, resulting in a substantially continuous linear friction weld between the base and the rim.
Richard D. Trask - Simsbury CT Susan H. Goetschius - Marlborough CT Stephen A. Hilton - Vernon CT
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
B23K 2012 B23K 3704
US Classification:
228212
Abstract:
A linear friction welding process provides two members to be joined together into a final product, where each of the members has a major outer surface, where one of the two members is a stub which is surrounded, at least in part, on its outer major surface by a collar. The stub is generally restrained without substantial restraining contact on its outer major surface by tooling, thereby eliminating the risk that tooling will cause physical or chemical damage to the final shape. Thereafter, pressure and relative movement are applied between said members to linear friction weld the members together. A collar comprises a major inner surface surrounding a portion of a major outer (lateral) surface of a member to be linear friction welded, and further comprises a radially outer surface which extends a surface to be interfaced of the member. The collar has an outer lateral surface which may be curved in order to prevent stress and cracking of the collar during linear friction welding. The inner and outer lateral collar surfaces may be generally parallel to each other, making the area of the outer radial surface of the collar small, so that less process input energy is needed to overcome the friction contributed by the collars, and so that the collars experience smaller loads during linear friction welding, making them easier to secure.
Method For Linear Friction Welding And Product Made By Such Method
Herbert L. Walker - Glastonbury CT Stephen A. Hilton - Vernon CT JoAnn Barbieri - Vernon CT John P. Fournier - Portland CT Richard D. Trask - Simsbury CT
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
B23P 1500
US Classification:
2988921
Abstract:
A process for joining a base for an airfoil to a disk for an integrally bladed rotor stage in a gas turbine engine includes providing a disk having a radially outer rim with a slot defined therein by a recessed surface, and further includes providing a base having a longitudinally extending root portion facing opposite a longitudinally extending support portion for supporting the airfoil. The root portion has a root surface and the support portion has an outer surface. The process further includes bringing the root surface of the root portion into contact with the recessed surface bounding the slot, applying pressure and relative movement between the base and the rim to achieve during welding, substantial contiguity between the root surface and the recessed surface over the area of the recessed surface, resulting in a substantially continuous linear friction weld between the base and the rim.
They were trying to get rid of the legacy, said Richard Trask, Danvers archivist. He said that just a few decades later, Salem started selling its connection to the trials largely nominal, with the exception of the only space still standing that is directly related to the incident, the so-calle
Date: Oct 28, 2014
Category: Entertainment
Source: Google
Salem witch trials document up for auction, expected to fetch up to $35000
Richard Trask, the Danvers town archivist and a leading expert on the trials, tells The Salem News (http://bit.ly/x2RBmQ) its just the third time in a 50-year career he can recall a witchcraft document being sold.
Lincoln University, PAWith over 7 years experience in the Digital Signage industry and over 25 years experience in the software industry, Mr. Trask brings his experience and skills... With over 7 years experience in the Digital Signage industry and over 25 years experience in the software industry, Mr. Trask brings his experience and skills to ADS Global Media Systems Corporation, an innovative company dedicated to creating a virtual conduit that connects Digital Signage networks...