Abstract: A miniature cooling system includes a base metal sheet, a flow channel layer, a piezoelectrically actuated metal sheet, a piezoelectric boundary compression layer and two piezoelectric ceramic vibrators. The flow channel layer is located on the base metal sheet and includes a first chamber, a second chamber, an inlet channel, a linking channel and an outlet channel. The inlet channel links the outside environment to the first chamber. The linking channel links the first chamber and the second chamber. The outlet channel links the second chamber to the outside environment. The piezoelectrically actuated metal sheet is located on the flow channel layer. The piezoelectric boundary compression layer is located on the piezoelectrically actuated metal sheet. The piezoelectric boundary compression layer includes two containing areas, and the two containing areas are respectively located above the first chamber and the second chamber.

Abstract: A linear piezoelectric motor and a slider drive system thereof are disclosed. The linear piezoelectric motor includes a piezoelectric ceramic element and a base structure. The piezoelectric ceramic element includes a first region, a second region and an interval region located between the first and the second region, wherein the first and the second region may be formed by a first and a second power signal supplied by a power supply to form a first and a second standing wave, respectively. The interval region is a quarter wavelengths. The first and the second standing wave have a phase difference so as to form a traveling wave. The base structure disposes the piezoelectric ceramic element and has a pectinate structure to increase the amplitude of the first and the second standing wave, thereby enabling the piezoelectric motor to be driven.

Abstract: A miniature cooling system includes a base metal sheet, a flow channel layer, a piezoelectrically actuated metal sheet, a piezoelectric boundary compression layer and two piezoelectric ceramic vibrators. The flow channel layer is located on the base metal sheet and includes a first chamber, a second chamber, an inlet channel, a linking channel and an outlet channel. The inlet channel links the outside environment to the first chamber. The linking channel links the first chamber and the second chamber. The outlet channel links the second chamber to the outside environment. The piezoelectrically actuated metal sheet is located on the flow channel layer. The piezoelectric boundary compression layer is located on the piezoelectrically actuated metal sheet. The piezoelectric boundary compression layer includes two containing areas, and the two containing areas are respectively located above the first chamber and the second chamber.

Abstract: A linear piezoelectric motor and a slider drive system thereof are disclosed. The linear piezoelectric motor includes a piezoelectric ceramic element and a base structure. The piezoelectric ceramic element includes a first region, a second region and an interval region located between the first and the second region, wherein the first and the second region may be formed by a first and a second power signal supplied by a power supply to form a first and a second standing wave, respectively. The interval region is a quarter wavelengths. The first and the second standing wave have a phase difference so as to form a traveling wave. The base structure disposes the piezoelectric ceramic element and has a pectinate structure to increase the amplitude of the first and the second standing wave, thereby enabling the piezoelectric motor to be driven.

Abstract: A sun hat has a curve visor, two supporting members secured on the visor, two sliding members, and a pair of eyeglasses; each supporting member has a holding recess on a rear side, and an elongate hole right in front of communicating with the holding recess; each sliding member is linearly displaceable along a respective elongate hole with a base part thereof being held in the holding recess, and with a hollow protruding part sticking through the elongate hole; the eyeglasses have a curved front part, and a connecting part on each temple thereof, and they are connected to the sliding members in an angularly displaceable manner with the connecting parts being held in respective hollow protruding parts of the sliding members; therefore, the eyeglasses can be pivoted from an in-use position to a not-in-use one, and adjusted in position.

Abstract: A sun hat has a curve visor, two supporting members secured on the visor, two sliding members, and a pair of eyeglasses; each supporting member has a holding recess on a rear side, and an elongate hole right in front of communicating with the holding recess; each sliding member is linearly displaceable along a respective elongate hole with a base part thereof being held in the holding recess, and with a hollow protruding part sticking through the elongate hole; the eyeglasses have a curved front part, and a connecting part on each temple thereof, and they are connected to the sliding members in an angularly displaceable manner with the connecting parts being held in respective hollow protruding parts of the sliding members; therefore, the eyeglasses can be pivoted from an in-use position to a not-in-use one, and adjusted in position.

Abstract: A sun hat includes a main body, a curve visor, two supporting members, and a pair of eyeglasses; the supporting members each have a holding portion, and a folded fixing portion extending from one end of the holding portion; the holding portions have tooth-shaped protrusions on an inner side; the supporting members are secured to the visor with two opposed parts of the folded fixing portions being tightly pressed on two sides of the visor; the eyeglasses have a sleeve part on each of two ends thereof, which has outer tooth-shaped protrusions; the eyeglasses are supported on the supporting members with the sleeve parts being held in the holding portions, and with the tooth-shaped protrusions of the sleeve parts engaging the tooth-shaped protrusions of the holding portions such that the eyeglasses can be pivoted from an in-use position to a not-in-use one, and adjusted in position.