Abstract: An apparatus for detecting an endpoint of a grinding process includes a connecting device, a timer and a controller. The connecting device is connected to a sensor that periodically senses an interface of a reconstructed wafer comprising a plurality of dies of at least two types to generate a thickness signal comprising thicknesses from a surface of an insulating layer of the reconstructed wafer to the interface of the reconstructed wafer. The timer is configured to generate a clock signal having a plurality of pulses with a time interval. The controller is coupled to the sensor and the timer, and configured to filter the thickness signal according to the clock signal to output a thickness extremum among the thicknesses in the thickness signal within each time interval, wherein the thickness signal after the filtering is used to determine the endpoint of the grinding process being performed on the reconstructed wafer.

Abstract: The present disclosure relates to a bicycle quick release device. The bicycle quick release device includes: an inner shaft; a lever connected to one end of the inner shaft, the lever being reciprocatively swingable between a release position and an urge position; an outer sleeve provided for the inner shaft to pass through, an outer circumferential face of the outer sleeve being provided with a sleeve body, an abutting portion disposed on one end of the sleeve body and an expansion portion disposed on the other end of the sleeve body, the expansion portion being provided with a plurality of axially extending sectioned grooves; an urging unit disposed between the lever and the abutting portion of the outer sleeve; and a tapered expansion unit connected to the other end of the inner shaft, an outer circumferential face of the tapered expansion unit being provided with a conical face.

Abstract: The present disclosure relates to a bicycle quick release device. The bicycle quick release device includes: an inner shaft; a lever connected to one end of the inner shaft, the lever being reciprocatively swingable between a release position and an urge position; an outer sleeve provided for the inner shaft to pass through, an outer circumferential face of the outer sleeve being provided with a sleeve body, an abutting portion disposed on one end of the sleeve body and an expansion portion disposed on the other end of the sleeve body, the expansion portion being provided with a plurality of axially extending sectioned grooves; an urging unit disposed between the lever and the abutting portion of the outer sleeve; and a tapered expansion unit connected to the other end of the inner shaft, an outer circumferential face of the tapered expansion unit being provided with a conical face.

Abstract: A handle-hidden quick-release structure has: an outer shaft lever having a shaft lever external thread on an outer circumferential surface of one end thereof, at least one clamping slot on the other end face thereof and an axially extending receiving hole, wherein a wall of the receiving hole has a step surface; an internally hidden rotating handle having a first rod body and a second rod body, wherein the first rod body is disposed in the receiving hole of the outer shaft lever, a stop portion radially protrudes outwards from the first rod body, the second rod body has a rod body and a rod head, the rod body is disposed in the receiving hole, one end of the rod body is pivoted to the first rod body, the other end of the rod body is connected with the rod head.

Abstract: A quick-release structure has: a shaft lever having a shaft lever external thread at one end thereof and a shaft lever internal thread at the other end thereof; a fixed seat sheathed on the shaft lever in a non-rotatable manner relative to each other. The fixed seat has an annular fixed seat engaging tooth on one end face thereof; a movable seat having an axially penetrating perforation, wherein the movable seat has an annular movable seat engaging tooth on one end face thereof, and the movable seat engaging tooth faces the fixed seat engaging tooth of the fixed seat; a spring abutting between the fixed seat and the movable seat; a spanner rod having a pivoting hole; and a connecting shaft, one end of which abuts on the spanner rod, and the other end of which has a connecting shaft external thread.

Abstract: A quick-release structure has: a shaft lever having a shaft lever external thread at one end thereof and a shaft lever internal thread at the other end thereof; a fixed seat sheathed on the shaft lever in a non-rotatable manner relative to each other. The fixed seat has an annular fixed seat engaging tooth on one end face thereof; a movable seat having an axially penetrating perforation, wherein the movable seat has an annular movable seat engaging tooth on one end face thereof, and the movable seat engaging tooth faces the fixed seat engaging tooth of the fixed seat; a spring abutting between the fixed seat and the movable seat; a spanner rod having a pivoting hole; and a connecting shaft, one end of which abuts on the spanner rod, and the other end of which has a connecting shaft external thread.

Abstract: A handle-hidden quick-release structure has: an outer shaft lever having a shaft lever external thread on an outer circumferential surface of one end thereof, at least one clamping slot on the other end face thereof and an axially extending receiving hole, wherein a wall of the receiving hole has a step surface; an internally hidden rotating handle having a first rod body and a second rod body, wherein the first rod body is disposed in the receiving hole of the outer shaft lever, a stop portion radially protrudes outwards from the first rod body, the second rod body has a rod body and a rod head, the rod body is disposed in the receiving hole, one end of the rod body is pivoted to the first rod body, the other end of the rod body is connected with the rod head.

Abstract: The utility model discloses an anti-disengagement fine-adjustable quick-detachable structure, which comprises a shaft lever, a spanner rod and a fine-adjustable unit; wherein the shaft lever has a small-diameter portion and a large-diameter portion, an anti-disengagement end face is formed at a junction between the small-diameter portion and the large-diameter portion, and the spanner rod is screwed to one end of the shaft lever; and the fine-adjustable unit has an inner sleeve and an outer sleeve, the inner sleeve has an axially penetrating through hole and a fine-adjustable external thread, the outer sleeve is hollow annular, a small-diameter hole and a large-diameter hole communicated with the small-diameter hole are arranged on an inner circumferential surface of the outer sleeve, a fine-adjustable internal thread is arranged on a hole wall of the small-diameter hole, the fine-adjustable internal thread of the outer sleeve is screwed onto the fine-adjustable external thread of the inner sleeve such that t

Abstract: A quick-release device for use on a bicycle includes a lever, an axle rotatably received in the lever, a shaft extending through the axle, a force device sleeved on the shaft, at least one spring sleeved on the shaft and a nut screwed onto the shaft. The axle includes an indentation defined therein and a first abutment formed on a bottom of the indentation. The shaft includes a shank and a head formed one end of the shank such that a second abutment is formed between the shank and the head. The head is received and engaged in the indentation such that the shank can not be rotated relative to the axle and the connected of the quick-quick device in promoted.

Abstract: A quick-release device for use on a bicycle includes a lever, an axle rotatably received in the lever, a shaft extending through the axle, a force device sleeved on the shaft, at least one spring sleeved on the shaft and a nut screwed onto the shaft. The axle includes an indentation defined therein and a first abutment formed on a bottom of the indentation. The shaft includes a shank and a head formed one end of the shank such that a second abutment is formed between the shank and the head. The head is received and engaged in the indentation such that the shank can not be rotated relative to the axle and the connected of the quick-quick device in promoted.

Abstract: A quick-release device includes a tubular structure and a flange radially extends from a second end of the tubular structure. A ring is sleeved on the tubular structure and selectively engaged to the flange and a sleeve is co-axially and securely connected to the ring. A shaft is co-axially connected to the tubular structure. A washer is received in the sleeve and abutting the flange of the sleeve, wherein the shaft extends through the washer. A pivot is mounted to a distal end of the second portion of the shaft. A lever is pivotally mounted onto the pivot. The lever includes a handle having a pair of ears formed on one end of the handle, wherein each ear has a pivot hole defined therein for rotatably receiving two opposite ends of the pivot and a raised portion formed thereon for selectively inwardly forcedly push the washer when fastening the quick-release.

Abstract: A quick-release device includes a shank and a flange radially extending from one end of the shank. A ring is sleeved on the shank and engaged to the flange. A sleeve is co-axially connected and engaged to the ring. A washer is received in the sleeve. A shaft is co-axially connected to the shank and sequentially extending through the ring, the sleeve and the washer. A pivot is transversely mounted to a distal end of the shaft and abutting the washer. A lever is pivotally mounted onto the pivot for selectively forcedly and inwardly pushing the washer and engaged to the sleeve.

Abstract: A quick-release device includes a shank and a flange radially extending from one end of the shank. A ring is sleeved on the shank and engaged to the flange. A sleeve is co-axially connected and engaged to the ring. A washer is received in the sleeve. A shaft is co-axially connected to the shank and sequentially extending through the ring, the sleeve and the washer. A pivot is transversely mounted to a distal end of the shaft and abutting the washer. A lever is pivotally mounted onto the pivot for selectively forcedly and inwardly pushing the washer and engaged to the sleeve.

Abstract: A quick-release device includes a tubular structure and a flange radially extends from a second end of the tubular structure. A ring is sleeved on the tubular structure and selectively engaged to the flange and a sleeve is co-axially and securely connected to the ring. A shaft is co-axially connected to the tubular structure. A washer is received in the sleeve and abutting the flange of the sleeve, wherein the shaft extends through the washer. A pivot is mounted to a distal end of the second portion of the shaft. A lever is pivotally mounted onto the pivot. The lever includes a handle having a pair of ears formed on one end of the handle, wherein each ear has a pivot hole defined therein for rotatably receiving two opposite ends of the pivot and a raised portion formed thereon for selectively inwardly forcedly push the washer when fastening the quick-release.

Abstract: A quick release device includes a cam portion and a lever connected to the cam portion, a cooperation unit with which the cam portion is pivotably engaged, a rod having a first threaded section at a first end thereof and the threaded section extending through the cooperation unit and into the cam portion and threadedly connected with a pin which transversely extends through the cam portion, a second end of the rod including a second threaded section which extends through a biasing unit and is connected with an adjustment member in the biasing unit. The biasing unit pulls rod in a direction away from the operation member. The biasing unit is a tubular member which accommodates the spring and the adjustment member therein.

Abstract: A quick release device includes a cam portion and a lever connected to the cam portion, a cooperation unit with which the cam portion is pivotably engaged, a rod having a first threaded section at a first end thereof and the threaded section extending through the cooperation unit and into the cam portion and threadedly connected with a pin which transversely extends through the cam portion, a second end of the rod including a second threaded section which extends through a biasing unit and is connected with an adjustment member in the biasing unit. The biasing unit pulls rod in a direction away from the operation member. The biasing unit is a tubular member which accommodates the spring and the adjustment member therein.