Abstract: A reinforcement for a hub ratchet base comprising a chain-ring and a ratchet ring. The chain-ring is made of an aluminum material having a chain-ring socket and an assembly shaft. The ratchet ring is made of a metal material with high hardness which can be the titanium alloy material or the chrome-molybdenum steel material. The ratchet ring has an engaging slot corresponding to the assembly shaft of the chain-ring. There are at least three connecting slots disposed on the ratchet ring for accepting at least three ratchet members and at least three corresponding elastic members. Each of the connecting slots of the ratchet ring has a pivoting portion on an end for engaging with a ratchet member and an engaging portion on another end for engaging with an elastic member such that the elastic member pushes against a bottom portion of the ratchet member.

Abstract: A bicycle hub apparatus may comprise a hub body, a freewheel shell and an elastic spacer. The hub body has an axial hub axle, and an end of the hub body comprises an open-ended connecting space. A driving ring having a plurality of first driving teeth is installed inside the connecting space. The freewheel shell mounted on the hub axle of the hub body has an open-ended connecting recess, and a coupling ring received inside the connecting recess comprises a plurality of second driving teeth which are configured to engage with the first driving teeth. The elastic spacer secured in the connecting recess is coupled with an inner surface of the coupling ring. With the elastic spacer, the second driving teeth can firmly engage with the first driving teeth of the driving ring when a bicyclist pedaling in the forward direction.

Abstract: An improved wheel hub may include a hub body, a freewheel unit, a connecting sleeve and an external freewheel. The connecting sleeve connects to the ratchet sleeve of the hub body in order to provide more space for the external freewheel. With the design of the connecting sleeve and the external freewheel unit, the hub body loaded with more smaller freewheels provides more pedaling speeds for a bicycle travelling downhill. When cycling downhill by using the smaller diameters of the sprockets, the smaller sprockets of the external freewheel can help a cyclist to maintain an optimum pedaling speed in a slopy terrain, and the speed of the bicycle can be easily controlled.

Abstract: A bicycle hub apparatus may include a hub body and a freewheel body, and a first driving ring, a second driving ring, and third driving ring are sequentially located between the hub body and the freewheel body. The second driving ring is coupled inside the first driving ring to rotate around a shaft of the hub body simultaneously. A second lateral surface of the second driving ring facing to the third driving ring has a plurality of first engaging teeth, and a plurality of second engaging teeth protruding from a first surface of the third driving ring which faces to the second driving ring is configured to engage with the first engaging teeth of the second driving ring. The number of the second engaging teeth is a multiple of the first engaging teeth, to improve the engagement between the first engaging teeth and the second engaging teeth.

Abstract: A bicycle hub apparatus may include a hub body, a driving ring, a freewheel body, and a ratchet unit. A plurality of driving teeth are sequentially formed around an inner periphery of the driving ring. Since the separated distances between two adjacent driving teeth is smaller, the driving ring comprises more driving teeth, and the number thereof is up to 155 teeth. Also, the ratchet unit comprises a plurality of engaging pieces, and each of the engaging pieces has numerous engaging teeth, and the sizes thereof are corresponding to the driving teeth. As a result, the bicycle hub apparatus in the present invention improves the efficiency of engaging process between the engaging teeth and the driving teeth, and further lowers the possibility of missing step and the risk of use.

Abstract: An improved knife sharpener may include a hub body, a freewheel unit, a connecting sleeve and an external freewheel. The connecting sleeve connects to the ratchet sleeve of the hub body in order to provide more space for the external freewheel. With the design of the connecting sleeve and the external freewheel unit, the hub body loaded with more smaller freewheels provides more pedaling speeds for a bicycle travelling downhill. When cycling downhill by using the smaller diameters of the sprockets, the smaller sprockets of the external freewheel can help a cyclist to maintain an optimum pedaling speed in a slopy terrain, and the speed of the bicycle can be easily controlled.

Abstract: A battery module for an electric vehicle includes an external case, a battery box, a fixing mechanism, and a rotatable pull tab. The external case is fixed in the electric vehicle, and includes an accommodation space and a first fixing part. The battery box is detachably installed in the accommodation space. The fixing mechanism is disposed on the battery box. When the battery box is installed in the accommodation space, the fixing mechanism engages or disengages the first fixing part to selectively lock or unlock the battery box. When the battery box is locked, the battery box is securely fixed in the accommodation space. When the battery box is unlocked, the battery box is removable from the accommodation space. The rotatable pull tab is detachably inserted into the fixing mechanism. By rotating the rotatable pull tab the battery box is selectively locked or unlocked.

Abstract: A battery module configuration structure for an articulated electric bus includes a vehicle body, a plurality of wheel shafts and a plurality of battery modules. The wheel shafts are respectively disposed on a bottom of the vehicle body. The battery modules are disposed in an interior of the vehicle body and correspondingly located at an upper area of at least one of the wheel shafts.

Abstract: A bicycle hub assembly includes a hub shell defining a toothed drive member mounting hole and a locating groove, a locating member having a positioning portion accommodated in the locating groove of the hub shell, and a toothed drive member having a first locating portion fastened to the positioning portion of the locating member and a plurality of teeth. In an alternate form of the invention, the bicycle hub assembly includes a hub shell defining therein a toothed drive member mounting hole and a plug hole; a locating member having a positioning portion and a plug portion that is plugged into the plug hole of the hub shell, and a toothed drive member having a first locating portion fastened to the positioning portion of the locating member and a plurality of teeth formed therein.

Abstract: A method of performing optical proximity correction for preparing a mask projected onto a wafer by photolithography includes the following steps. An integrated circuit layout design including a first feature and a second feature is obtained, wherein the first feature overlaps a first boundary of two structures in the wafer. An edge of the first feature close to the second feature pertaining to a specific trend section of an experimental chart having trend sections is recognized. An optical proximity correction value is evaluated for the edge through a computer system according to a rule corresponding to the specific trend section. The layout design is compensated with the optical proximity correction value.

Abstract: A method of making a photomask layout is provided. A graphic data of a photomask is provided. The graphic data includes at least one rectangular pattern. A correction step is performed to the graphic data by using a computer. The correction step includes adding a substantially ring-shaped pattern inside the rectangular pattern. A method of forming a photomask by using the photomask layout obtained by the said method is also provided. In an embodiment, the photomask is suitable for defining micro-lenses of a solid-state image sensor.

Abstract: A battery module configuration structure for an articulated electric bus includes a vehicle body, a plurality of wheel shafts and a plurality of battery modules. The wheel shafts are respectively disposed on a bottom of the vehicle body. The battery modules are disposed in an interior of the vehicle body and correspondingly located at an upper area of at least one of the wheel shafts.

Abstract: A method of performing optical proximity correction for preparing a mask projected onto a wafer by photolithography includes the following steps. An integrated circuit layout design including a first feature and a second feature is obtained, wherein the first feature overlaps a first boundary of two structures in the wafer. An edge of the first feature close to the second feature pertaining to a specific trend section of an experimental chart having trend sections is recognized. An optical proximity correction value is evaluated for the edge through a computer system according to a rule corresponding to the specific trend section. The layout design is compensated with the optical proximity correction value.

Abstract: A method of making a photomask layout is provided. A graphic data of a photomask is provided. The graphic data includes at least one rectangular pattern. A correction step is performed to the graphic data by using a computer. The correction step includes adding a substantially ring-shaped pattern inside the rectangular pattern. A method of forming a photomask by using the photomask layout obtained by the said method is also provided. In an embodiment, the photomask is suitable for defining micro-lenses of a solid-state image sensor.

Abstract: A method of performing optical proximity correction for preparing a mask projected onto a wafer by photolithography includes the following steps. An integrated circuit layout design comprising a first feature and a second feature is obtained, wherein the first feature overlaps a first boundary of two structures in the wafer. An edge of the first feature close to the second feature pertaining to a specific trend section of an experimental chart having trend sections is recognized. An optical proximity correction value is evaluated for the edge through a computer system by a rule corresponding to the specific trend section. The layout design is compensated with the optical proximity correction value.

Abstract: A tea brewing machine includes: an upper cup having an aperture, a sealing plate movable vertically in the upper cup between a sealing position whereat the aperture is sealed by the sealing plate, and a non-sealing position whereat the aperture is not sealed by the sealing plate; a pushing unit disposed under the upper cup unit such that, when the pushing unit is in the non-pushing state, the sealing plate is at the sealing position, and when pushing unit is in the pushing state, the sealing plate is at the non-sealing position; a rotary knob; and a driving block disposed on the rotary knob. When the rotary knob is rotated in a timing direction, the driving block comes into contact with the pushing unit to convert the pushing unit into the pushing state.

Abstract: A battery module for an electric vehicle includes an external case, a battery box, a fixing mechanism, and a rotatable pull tab. The external case is fixed in the electric vehicle, and includes an accommodation space and a first fixing part. The battery box is detachably installed in the accommodation space. The fixing mechanism is disposed on the battery box. When the battery box is installed in the accommodation space, the fixing mechanism engages or disengages the first fixing part to selectively lock or unlock the battery box. When the battery box is locked, the battery box is securely fixed in the accommodation space. When the battery box is unlocked, the battery box is removable from the accommodation space. The rotatable pull tab is detachably inserted into the fixing mechanism. By rotating the rotatable pull tab the battery box is selectively locked or unlocked.

Abstract: A bicycle hub assembly includes an axle, a first axle bearing having an inner race sleeved on the axle and an outer race, a second axle bearing having an inner race sleeved on the axle and an outer race, an axle sleeve unit including first and second inner race stopping portions respectively stopped against the inner race of the first axle bearing and the inner race of the second axle bearing, one of both of the first and second inner race stopping portions being made in the form of a flange, a hub shell unit including a hub shell connected to the outer race of the first axle bearing and a driven portion, and a driving unit connected to the outer race of the second axle bearing and including a driving member for rotating the driven portion of the hub shell unit.

Abstract: A bicycle hub assembly includes a hub shell defining a toothed drive member mounting hole and a locating groove, a locating member having a positioning portion accommodated in the locating groove of the hub shell, and a toothed drive member having a first locating portion fastened to the positioning portion of the locating member and a plurality of teeth. In an alternate form of the invention, the bicycle hub assembly includes a hub shell defining therein a toothed drive member mounting hole and a plug hole; a locating member having a positioning portion and a plug portion that is plugged into the plug hole of the hub shell, and a toothed drive member having a first locating portion fastened to the positioning portion of the locating member and a plurality of teeth formed therein.