摘要:
A paint composition comprising an aqueous resin having photo-curable functional groups in a molecule, a photoinitiator, and a crosslinker is suitable for use on golf balls since the composition is fully adherent to molded parts of ionomer resins and urethane resins commonly used in golf ball covers, eliminates a need for pre-treatment of the ball surface, and forms a cured coating having a high bond strength to the ball surface. The composition which is photo-curable ensures efficient operation in the golf ball manufacturing process. In a golf ball coated with the paint composition, the coating has abrasion durability.
摘要:
A radio communications system includes radio devices, and antenna and an array antenna. The radio devices communicate a prescribed signal via the antenna and the array antenna in a system of transmission and reception at a single frequency, such as time division duplex, as the array antenna changes the in directivity to form a plurality of directivities. The radio devices detect a plurality of received radio waves' strength to produce receive signal profiles, respectively, indicating a plurality of strength profiles. The radio devices multivalue strength of the receive signal profiles, and generate private keys having the multivalued plurality of values serving as a bit pattern.
摘要:
An array antenna apparatus includes a dielectric substrate, a feeder element, a parasitic element, and a directivity control unit. The feeder element and the parasitic element have an equal length. The feeder element and the parasitic element are arranged such that they intersect with each other at a substantially central portion of the parasitic element and a feeder unit of the feeder element and such that the parasitic elements are arranged symmetrically around the feeder element. An interval between the feeder element and the parasitic element is not larger than half wavelength of a radio wave. The parasitic element has a varactor diode serving as a variable capacitance element loaded. The directivity control unit supplies a control voltage to the varactor diode, and switches directivity of the array antenna apparatus.
摘要:
A receiver includes an array antenna, terminals, switches, a receiving circuit, a switch control unit and a reactance setting unit. Receiving circuit determines a received frequency and a received signal quality of a received signal by demodulating the received signal provided from the array antenna. The receiving circuit provides the received frequency to the reactance setting unit as a frequency setting signal, and provide the received signal quality to the switch control unit and the reactance setting unit. The reactance setting unit sets a set of the reactances corresponding to the received frequency in the terminals for each frequency, and the switch control unit switches connections in the switches to provide the received signal quality equal to or greater than the threshold.
摘要:
A coating composition comprising a two-part curable urethane paint consisting essentially of a polyol and a polyisocyanate, a metal chelating agent having a boiling point of up to 200° C., and an organometallic compound as a curing catalyst is easy to apply to golf balls because of a long pot life and a short curing time.
摘要:
A coating composition for a golf ball which comprises a non-yellowing polyisocyanate and a hydroxyl group-containing polyester obtained by reacting a polyhydric alcohol, at least a part of which has an alicyclic structure in the molecule, with a polybasic acid component, and a golf ball whose body is coated with the above coating composition. When said coating composition is used, a high durability is achieved even when a white enamel coating is omitted from the lower layer part of the coating and the coating step can be shortened.
摘要:
A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which contains a diene polymer having an aluminum catalyst residue content of not more than 650 ppm.
摘要:
A golf ball endowed with a good rebound and an excellent flight performance can be obtained using a golf ball composition of good workability which contains a diene polymer having a peak top molecular weight (Mp) on a molecular weight distribution curve measured using gel permeation chromatography (GPC) of at least 40×104 and not more than 100×104.
摘要:
To provide a parking support device for easily and quickly moving or rotating a target parking frame to an appropriate position. The parking support device includes a target parking position setting unit configured to set a target parking position at which a vehicle is to be parked with a target parking frame superimposed on an actual image displaying an area surrounding the vehicle. The parking support device guides the vehicle to the target parking position set by the target parking position setting unit. The target parking position setting unit moves the target parking frame initially displayed on a touch display to a position indicated by a coordinate point determined by a touch operation.
摘要:
The invention provides a method of manufacturing golf balls having covers of very high transparency, which method includes, prior to formation of the cover, a preformed body fabricating step wherein a material that develops a specific color when exposed to ultraviolet radiation is included in or coated onto the preformed body. In this way, a preformed body that matches the cover to be formed can be easily and reliably identified from among a plurality of types of preformed bodies stored at a temporary storage place. The invention also provides golf balls having a construction suitable for carrying out such a manufacturing method. The invention enables golf balls of excellent visibility and stylishness to be efficiently produced.