Abstract: A device for preventing jamming of a fibrous material subject to a compressive treatment in a stuffing chamber defined by a feed roll and a retard roll. The device includes an impact blade and a stabilizing apparatus. The impact blade is rigid and interchangeable. The stabilizing apparatus stabilizes the impact blade against moving away from the feed roll to prevent the jamming of the fibrous material between the feed roll and the impact blade during the compressive treatment of the fibrous material.

Abstract: A manually switching dual-mode hearing protector including an active hearing protection device that does not only provide for acoustic attenuation of ambient sound in order to protect hearing of a user in a noisy environment but in addition provides electro-acoustically bypassing of this acoustic attenuation function in order to provide the user with a communication function in order to enable the user to perceive speech signals even when wearing the manually switching dual-mode hearing protector in a noisy environment.

Abstract: A spring steel slip sheet for a compactor and for extending into a compression zone defined by a feed roll and a retard roll for shrinking a fabric. The slip sheet is for the compactor, extends into the compression zone defined by the feed roll and the retard roll for shrinking the fabric, and is made of spring steel. The slip sheet is sheet-like and includes a mounting portion and a compressing portion. The compressing portion extends from the mounting portion at an interface line. The mounting portion usually is flat and the compressing portion usually is arcuate. The compressing portion curves similarly as the feed roll of the compactor does, and presses the fabric against the feed roll of the compactor as the fabric enters the compression zone of the compactor.

Abstract: A vacuum drying apparatus of a circulative preheating type comprises a working area, containing a material-filling-preheating sub-area, a heating sub-area, a drying sub-area, and a material-discharging sub-area; a rotatable frame, rotatably installed in the working area and having four accommodating spaces corresponding to the sub-areas of the working area, respectively; four cylinders, installed in the accommodating spaces of the rotatable frame and corresponding to the sub-areas of the working area; and a driving assembly, connected to and thereby driving the rotatable frame to rotate; wherein when the rotatable frame rotates, each of the cylinders is moved from a currently corresponding sub-area to an adjacent said sub-area. Thereby, since the cylinders have been preheated in the material-filling-preheating sub-area before receiving a heating procedure in the heating sub-area, a required duration of the heating procedure can be reduced.

Abstract: An attachment for clutchingly covering a major portion of a handle of a plunger, enhancing grip of the handle of the plunger, and absorbing shock from repeated thrusts of the plunger. The attachment includes an end cap and a sleeve. The end cap covers the free end of the handle of the plunger and absorbs the shock from the repeated thrusts of the plunger. The sleeve depends from the end cap, clutchingly covers the major portion of the handle of the plunger, and enhances the grip of the handle of the plunger.

Abstract: A cotton candy machine includes a housing and a stick grabbing device mounted in the housing. A stick rotating device is mounted in the housing and aside corresponds to the stick grabbing device. A feeding device is mounted in the housing and a sugar floss maker is horizontally mounted in the housing under the stick rotating device. The stick grabbing device provides stick one by one and conveys the stick to the stick rotating device. The stick rotating temporarily holds the stick, rotates the stick and makes the stick longitudinally insert into the sugar floss maker for coiling the sugar floss from the sugar floss maker after the feeding device providing sugar material into the sugar floss maker.

Abstract: A treadmill is provided with a security apparatus. The security apparatus includes a plug and a socket. The plug includes a casing and a conductive card. The conductive card includes a first portion disposed in the casing and a second portion extended from the casing. The socket includes a casing and two conductive elements. The casing includes a slot defined therein. The conductive elements are disposed in the casing so that the conductive elements are isolated from each other normally but connected to each other through the conductive card when the conductive card is inserted into the casing through the slot.

Abstract: A snap hook includes a channel and an orifice of different height formed in an attaching end of a hook member and a latching cavity formed in a receiving end of the hook member, a pivotal gate having one end attached to the attaching end with an axle, and a latch member attached to the other end for engaging with the latching cavity of the hook member, the axle includes one or more flat surfaces for engaging into the narrower channel of the hook member and for selectively moving the latch member to engage with the latching cavity of the hook member and to lock the pivotal gate to the hook member, and for preventing the pivotal gate from being unlocked or opened inadvertently.

Abstract: A scooter has a folding device provided to selectively pivotally connect to a T-shaped handle bar and a platform. The folding device for scooters comprises a pair of side plates respectively secured to a lower portion of a T-shaped handle bar, a seat secured between the pair of side plates and an engaging unit mounted onto an underside of the platform. The engaging unit is selectively engaged to the seat to fix the relative connection between the handle bar and the platform.

Abstract: A push-type ratchet wrench may be easily operated. At least one end of a handle has a head, in which a driving body for rotating a workpiece and an engaging block capable of selectively switching the rotation direction of the driving body are provided. Also, a control member for actuating the engaging block is provided on the head. The control member includes a base disposed in the head, and an actuating block pivotally mounted on the base. The actuating block has an actuating sheet passing through the base and extending toward the engaging block. A clamping slot is formed at a location corresponding to the engaging block so that the actuating sheet can be clamped by the engaging block, and the user can press the actuating block leftward/rightward to achieve the object of switching and to prevent the conventional problems of easily breaking and uneasily actuating.

Abstract: An improved apparatus for correcting deflection in small diameter feed and retard rolls of an open width stabilizer so as to create a straight line nip with uniform pressure across the nip. The improved apparatus provides apparatus for adjusting deflection of the rolls to thereby maintain a desired size to a passageway between them so as to optimize compaction of a fabric web material. A wedge-like member is disposed between, and in moving relationship to, feed and retard roller bearings. The wedge-like member is asymmetrical, has feed and retard sides that engage the feed and retard roller bearings, respectively, and exerts reaction forces against each of the respective bearings. Improvement resides in the reaction forces causing the rolls the rolls to not deflect downwardly.

Abstract: A ball screw device includes an elongated screw shaft and a ball nut having helical grooves for receiving ball bearing members, a housing is attached to the ball nut and includes a bore for receiving the screw shaft, and includes one or more slots communicative with the bore of the housing, and one or more wiper members are changeably engaged into the slots of the housing and include a wiper element engaged into the bore of the housing for engaging into the groove of the screw shaft and for removing or wiping off the dirt from the helical groove of the screw shaft and for preventing the ball nut and the screw shaft from being damaged by the dirt.

Abstract: A liquid dispenser includes a hollow shank, a dispensing device longitudinally mounted to a first end of the hollow shank, a control device longitudinally mounted to a second end of the hollow shank and a sheath detachably mounted to the first end of the hollow shank for protecting the dispensing head after use. A passage is defined in the control device and communicating with an inner periphery of the hollow shank and the dispensing device such that the liquid contained in the hollow shank can flow into the dispensing device when the passage is opened. The control device is provided to selectively close/open the passage for controlling the output quantity of the liquid dispenser.

Abstract: A ball screw device includes a ball nut rotatably engaged onto a screw shaft for forming a gap between the ball nut and the screw shaft and for receiving a lubricating oil and for forming a helical raceway between the ball nut and the screw shaft, a number of bearing members engaged between the ball nut and the screw shaft and in the helical raceway, and a forcing device includes a barrel having an outer helical member for forming a helical channel and for receiving the lubricating oil, and for forcing the lubricating oil to flow into the gap between the ball nut and the screw shaft and to effectively lubricate the bearing members when the barrel is rotated relative to the screw shaft.

Abstract: A door lock assembly includes a lock casing device and a door lock device attached to the opposite sides of a door panel, a core device pivotally mounted to the lock casing device and operatable by an actuation device, an adjustable shaft mechanism includes a housing coupled to the core device and having a number of orifices and a channel communicative with a chamber of the housing, a shank slidably engaged in the housing and having a free end for engaging with the door lock device, and a spring-biased detent attached to the shank for engaging with either of the orifices of the housing and for anchoring the shank to the housing at a selected position and for adjustably mounting the shaft to the door panels of different thicknesses.

Abstract: An air compressing assembly includes an air tank disposed in a receptacle, an air blowing device disposed in the receptacle and coupled to the air tank for generating and supplying a pressurized air of a relatively lower air pressure and greater flowing quantity to the air tank, an air compressing device disposed in the receptacle for generating and supplying another pressurized air of a relatively greater air pressure and a relatively decreased flowing quantity to the air tank, and a control device coupled to the air compressing devices for controlling the air compressing devices to generate and supply different pressurized airs of different pressures and different flowing quantities to inflate different air facilities.