摘要:
A stent is constructed using interconnected links having micro-mechanical latching mechanisms. The micro-mechanical latching elements allow relative rotational movement of interconnected links in one rotational direction but restrict relative rotational movement of the two links in the opposite direction. The micro-mechanical latch surface features are formed using microelectronic mechanical systems (MEMS) manufacturing methods. The male surface of the latching components contains an array of ridges or protrusions, and the receiving surface contains a matching array of recesses. The array of ridges or protrusions and the corresponding recesses have uniformly dissimilar slopes that result in a substantially greater frictional force in one direction than in the opposite direction. The separation distance between the two surfaces is such that the male latch surface is engaged with the receiving surface recesses in the low stress “locked” state, preventing motion in the undesired direction. Each male ridge or protrusion can be underlined by a void that promotes elastic deflection when sliding in the desired direction and recovery into the ‘locked’ state when aligned with the recesses.
摘要:
An adjustable front fork blade for a stroller includes a sleeve, a base movably mounted in the sleeve, and a connecting tube mounted between the sleeve and the base. Thus, the front fork blade has an adjustable length so that when two front fork blades are mounted on a front wheel, the length of each of the two front fork blades can be adjusted to match each other so as to calibrate and center the position of the front wheel, thereby preventing the front wheel from being oscillated or vibrated due to deflection.
摘要:
A cordless communication device is fastened to a wall surface by a supporting element having a central tubular plug element, which points with its axial direction toward the wall surface, and which is provided for plugging-in and retaining a mating plug element that is joined to the bottom of the device housing. The plug element is configured such that it positively engages, at least in partial areas, with the mating plug element extending over or into the plug element. Axially extending guide elements, which maintain a selected rotational angle position between the plug element and the mating plug element, are arranged on the plug element or on the mating plug element. The supporting element is provided for fastening to a flush mounting box provided with continuous openings for fastening screws of the flush mounting box.
摘要:
An adjustable support stand for an article such as a camera employs a plurality of elongated links connected to one another at their ends by lockable universal joints. Each joint consists of a pair of complementary knuckles, each joined to a link end by a splined connection, which connections provide two axes of rotation to the joint. The knuckles are joined to one another about a third axis of rotation, perpendicular to the first two axes by means of a splined pin which passes through splined holes in the two knuckles. The splined connections employ splines of different count to achieve a high resolution of possible positions.
摘要:
The invention is an improved Offset Head Ratchet Wrench. It allows the user to remove or interchange different size ratchet heads or tools quickly with the push of a button attached at the head of the activating shaft. This shaft can activate in three stages if it is operating an offset wrench. The activating shaft is attached to an E shaped structure, which is made up of an activating shaft, locking pin and pivot pin, all three being attached to a central plate. Stage one is when the activating shaft is in a partially depressed position. The locking pin releases the ratchet head for rotation only. Stage two is when the activating shaft is fully depressed, it releases the pivot pin, allowing the ratchet head to be easily and quickly removed or exchanged for another type of tool with a similarly designed head.
摘要:
A wiper arm for a pivotably connected wiper blade has a fastening part (10) for fastening to a drive shaft (12), by inserting the drive shaft through a widening indentation (38) of the fastening part (10), and a screw nut (44 tenses the fastening part (10) against a bearing face (30) to the drive shaft (12) via a clamping part (40, 50) that is adapted to the indentation (38), and also the contact face (66) between the clamping part (40, 50) and the fastening part (10) forms a part of the surface of a sphere, and the bearing face (30) forms a part of a jacket face of a cylinder, whose cylinder axis (32) extends through the center point (36) of the sphere and parallel to the longitudinal direction (34) of the wiper blade.
摘要:
The invention is an improved Offset Head Ratchet Wrench. It allows the user to remove or interchange different size ratchet heads or tools quickly with the push of a button attached at the head of the activating shaft. This shaft can activate in three stages if it is operating an offset wrench. The activating shaft is attached to an E shaped structure, which is made up of an activating shaft, locking pin and pivot pin, all three being attached to a central plate. Stage one is when the activating shaft is in a partially depressed position. The locking pin releases the ratchet head for rotation only. Stage two is when the activating shaft is fully depressed, it releases the pivot pin, allowing the ratchet head to be easily and quickly removed or exchanged for another type of tool with a similarly designed head.
摘要:
A hand truck with a folding nose piece that uses an efficient mechanism to secure the nose piece in either one of a first position, ideal for the transportation of items, and a second position, ideal for storage of the hand truck. The hand truck includes a frame having a pair of wheels over which the center of gravity of items is aligned during transport. A nose piece is rotatably attached to the frame and is rotatable between a first position, generally perpendicularly extended from the frame, and a second position, generally parallel to the frame. A lever pivotally connected to the frame moves between a locked position and an open position. The lever engages and maintains the nose piece in the first position when the lever is in the locked position. The lever also engages and maintains the nose piece in the second position when the lever is in the locked position. The nose piece is movable between the first position and the second position when the lever is in the open position.
摘要:
The present invention relates to engagemnent devices and coupling members for forming a structural frame work for hollow tubes. One form of engagement device comprises a hollow sleeve (1) through which a tube (31) may be passed. The hollow sleeve has a deformable flared portion (2). A further hollow sleeve member (12) is immovable on the outside of the first sleeve and has a surface (13) arranged to co-operate the flared portion to cause it to deform to grip the tube (31). A further engagement device comprises a hollow sleeve portion (100) which is distendable to grip a tube mounted on its surface. A trustoconical wedge (101) is movable within the hollow sleeve potion (100) to cause to distend. A number of engagement devices may be connected together to form coupling members for connecting tubes to form a structural frame work.
摘要:
An improved table attachment for lawn chairs and the like comprising a gripping foot having a pair of semi-cylindrical members which are frictionally engageable to clamp about a leg of a chair on which the table attachment is to be mounted, one of the semi-cylindrical members having an externally-threaded neck portion projecting outward and upward therefrom, a tubular angle member having an internally-threaded end mateable with the neck portion and having a the opposite end castellated, a generally fan-shaped table platform having an opening formed adjacent the narrow end thereof for receiving a drinking glass and having a shaft projecting downwardly from the table platform adjacent the narrow end formed with a castellated interior mateable with the opposite end of the angle member.