摘要:
A non-toxic wildlife shot pellet for shotgun shells and the like comprises a lead shot pellet having an essentially uniform coating of nickel-phosphorous alloys having a Rockwell hardness of at least 45.
摘要:
A rigid bushing is described suitable for reception on a shaft or in a bore which has formed at an axial end thereof an annular sealing formation which extends integrally from the end of the bushing angularly so as to form a sealing surface to engage either a shaft or a bore, sealing being accomplished by the application of axial pressure upon the bushing.
摘要:
The present invention provides a resilient hand-held abrasive article comprising a flexible and/or conformable grip comprising a top surface, a bottom surface and individual small high-grip pads attached to each other in a pattern that leaves voids therebetween, the individual small high-grip pads comprising a top and a bottom. The top surface of a sanding article is attached, and in certain embodiments removably attached, to the bottom of the high-grip pads and a bottom surface having abrasive particles coated thereon. In certain embodiments, the flexible and/or conformable grip may not comprise voids.
摘要:
An improved resilient sanding block of the type comprising a core having a plurality of exterior surfaces, including a first major surface and a second major surface and side surfaces, and having a layer of abrasive material disposed thereon. The resilient sanding block may have one or more apertures or through holes extending from one major surface to the other major surface and channels formed in at least one of the major surfaces, with the channels in communication with the aperture. When a vacuum source is operatively connected to the aperture, the dust created by sanding will be substantially removed into the vacuum source via the channels and the aperture. A holder for a resilient sanding block is also disclosed, as well as a handle for the holder, which together form a sanding system.
摘要:
A macropipelined microprocessor chip adheres to strict read and write ordering by sequentially buffering operands in queues during instruction decode, then removing the operands in order during instruction execution. Any instruction that requires additional access to memory inserts the requests into the queued sequence (in a specifier queue) such that read and write ordering is preserved. A specifier queue synchronization counter captures synchronization points to coordinate memory request operations among the autonomous instruction decode unit, instruction execution unit, and memory sub-system. The synchronization method does not restrict the benefit of overlapped execution in the pipelined. Another feature is treatment of a variable bit field operand type that does not restrict the location of operand data. Instruction execution flows in a pipelined processor having such an operand type are vastly different depending on whether operand data resides in registers or memory. Thus, an operand context queue (field queue) is used to simplify context-dependent execution flow and increase overlap. The field queue allows the instruction decode unit to issue instructions with variable bit field operands normally, sequentially identifying and fetching operands, and communicating the operand context that specifies register or memory residence across the pipeline boundaries to the autonomous execution unit. The mechanism creates opportunity for increasing the overlap of pipelined functions and greatly simplifies the splitting of execution flows.
摘要:
The present invention relates to a seal which is capable of sealing against and rotatably supporting a spherical formation.The seal 10 has at least one annular lip portion 12 which has at least one sealing surface 18, 19 which is spherically contoured to sealingly engage the spherical formation 40. The lip portion is resilient in an axial direction but rigid enough to resist compressive deformation.The seal is particularly useful for sealingly supporting a hopper stirring member which extends through a wall of the hopper.
摘要:
A seal unit for providing a fluid seal between a shaft and a housing. THe seal unit includes a seal element screw threadedly received within an annular casing. The seal is made of a rigid but resilient material so that on rotation of the seal element within the casing the seal element is caused to deflect to bring it into sealing engagement with the shaft. Such an arrangement makes it possible to use a seal element having an internal diameter larger than the shaft to be sealed so that the seal element may be slid over the shaft without causing damage to the sealing surface of the seal element.
摘要:
A collapsible shipping rack with removable shelves being sized and configured for having one rack on top of another similar rack when the rack is in either the upright and collapsed position respectively. The rack includes a base, a plurality of substantially identical, normally upright legs connected to the base and each leg including a bottom section with positioning means, a middle section having at least one hinge means, and a top section having positioning means for compatible mating engagement with the bottom section positioning means. Additionally, a plurality of substantially parallel guide means are provided which span the legs for supporting the shelves.
摘要:
There is disclosed a seal formed by a seal housing having an annular chamber, a shaft extending therethrough and an annular sealing element disposed within the chamber and partitioning it into a plurality of annular spaces, the sealing element being rigid but compressible and engaging the wall of the chamber radially spaced from the shaft as well as the shaft and said sealing element being provided with fluid passages such that when compressive forces are placed upon the element, the fluid pressure on all sides of said element are equalized.