Branson Ultrasonics Corporation

Ad Technology Corporation

Clark A Denslow

Walter T Ackermann

First and second complementary snap-fastener components locally and in-situ molded to the same side of a single flexible porous substrate and at relatively short spacing from each other, such that the substrate can be folded between these complementary components to permit their selective mutual engagement and disengagement. One of these formations is a stud component and the other is a socket component, and the sizing of their engageable formations is such that a predetermined clearance characterizes a loose fit when in mutually engaged relation. The looseness of this fit bears a predetermined relation to the thickness and flexible deformability of another flexible member or tie element which is interposed between the snap-fastener elements to secure a given selected location of snap-fastener retention to the tie element. Several embodiments are described.

Snap fastener construction

A flexible cover, blind or shade is fabricated from thermoplastic rod or tubular members which are spaced from another on a support. The free-standing side is engaged by an ultrasonic resonator to bond the members to one another. The pressure exerted during bonding is of such magnitude as to compress and flatten the members to cause a thin web joining juxtaposed members, the web forming a flexible joint.

Method of fabricating a flexible cover by ultrasonic vibrations

Metallic workpieces, such as the terminals of a direct current motor armature winding, are welded to a slot, such as a commutator slot, using high frequency vibratory energy. A half wavelength resonator including a tip having a cutting surface is disposed opposite a slot containing the workpieces. As an applied force urges the tip into relative motion with respect to the slot, the cutting surface cleaves a sliver from the slot wall, the sliver being urged by the tip into intimate contact with the workpieces to be welded. When the resonator is rendered resonant for undergoing high frequency vibratory motion in a direction normal to the applied force the sliver and workpieces are welded together and to a surface of the slot.

Method of welding metallic conductors using vibratory energy

A resonator dimensioned to be resonant along its longitudinal axis at a predetermined frequency of vibration includes a liquid retaining recess therein disposed at or near an antinodal region of longitudinal motion. An electroacoustic converter coupled to one end of the resonator renders the resonator resonant at its predetermined high frequency for activating a liquid, such as molten solder, disposed in the liquid retaining means to effect soldering a workpiece immersed in the liquid of the retaining means. Means move said resonator between a storage tank, whereat to charge said recess, and working position whereat to effect said workpiece treatment.

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Wilton, CT, United States of America

Clark A Denslow