Other

University of California

John H Wynne

David J Reinkensmeyer

A peelable stenciling ink for imprinting indicia such as letters, numbers and symbols on a surface of an article such as a sport ball made of leather or a synthetic polymer, e.g., a thermoplastic material, consists of a solvent, a dye dispersed in the solvent, and a film-forming polymer soluble in the dye-solvent solution to form a thick paste and hardenable into a solid, flexible film upon evaporation of the solvent from a thin layer of ink applied to an article surface. A method of using the ink comprises the steps of temporarily adhering a stencil sheet in fluid-tight contact to an article surface by a pressure-sensitive adhesive layer, smearing a layer of the ink on the obverse surface area of the stencil sheet through indicia-shaped openings through the sheet onto the article surface, allowing sufficient time for dye in the ink to penetrate the article surface, and for the solvent to evaporate and cause the film-forming substance to harden into a solid film peelable from the article surface, and peeling the stencil sheet and solid film off the article surface, thereby leaving indicia markings imprinted on and dye-penetrated beneath the article surface, thus making the markings resistant to obliteration by scuffing or abrasion.

Peelable stenciling ink and method of using

A peelable stenciling ink for imprinting indicia such as letters, numbers and symbols on a surface of an article such as a sport ball made of leather or a synthetic polymer, e.g., a thermoplastic material, consists of a solvent, a dye dispersed in the solvent, and a film-forming polymer soluble in the dye-solvent solution to form a thick paste and hardenable into a solid, flexible film upon evaporation of the solvent from a thin layer of ink applied to an article surface. A method of using the ink comprises the steps of temporarily adhering a stencil sheet in fluid-tight contact to an article surface by a pressure-sensitive adhesive layer, smearing a layer of the ink on the obverse surface area of the stencil sheet through indicia-shaped openings through the sheet onto the article surface, allowing sufficient time for dye in the ink to penetrate the article surface, and for the solvent to evaporate and cause the film-forming substance to harden into a solid film peelable from the article surface, and peeling the stencil sheet and solid film together from the article surface, thereby leaving indicia markings imprinted on and dye-penetrated beneath the article surface, thus making the markings resistant to obliteration by scuffing or abrasion.

A stencil apparatus includes an elongated stencil support strip having at least one longitudinally extruding severance line, and at least one stencil support area between the severance line and the edge of the stencil support strip. Stencil elements with pressure sensitive adhesive on their lower surfaces are releasably mounted on the stencil support areas, arrangements are provided for permitting the removal of material underlying the stencil elements. The stencil apparatus may be formed of either one or two layers and have upper and lower support strips.

Versatile, aligning stencil structure

A backdriveable device for manipulating and measuring limb movement, and a method of use thereof. The device comprises a plurality of forcers, at least one linear guide for constraining the forcers to reciprocate along respective linear trajectories, and a linkage for attachment to a limb of a user, the linkage rotatably connected between the forcers and including two bars rotatably connected together at a vertex. Movement of the forcers along their linear trajectories results in movement of the vertex along a spatial trajectory. In specific embodiments, the forcers are moving coils of a linear motor. The movement and forces applied by the coils can be controlled through a computer interface, providing robotic control of limb movement.

Growing community of inventors

Long Beach, CA, United States of America

John H Wynne