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A segmented pipe coupling includes traction bolts that permit movement of shanks of the traction bolts into an attitude in which the head and nut of the traction bolts engage their respective bolting faces in continuous engagement, thus to eliminate a drop in tensile stress in a shank of the tractio

A segmented pipe coupling includes traction bolts that permit movement of shanks of the traction bolts into an attitude in which the head and nut of the traction bolts engage their respective bolting faces in continuous engagement, thus to eliminate a drop in tensile stress in a shank of the traction bolt due to shifting of the head of the bolt or the nut subsequent to initial torquing down of the nut.

대표청구항 ▼

A segmented pipe coupling includes traction bolts that permit movement of shanks of the traction bolts into an attitude in which the head and nut of the traction bolts engage their respective bolting faces in continuous engagement, thus to eliminate a drop in tensile stress in a shank of the tractio

A segmented pipe coupling includes traction bolts that permit movement of shanks of the traction bolts into an attitude in which the head and nut of the traction bolts engage their respective bolting faces in continuous engagement, thus to eliminate a drop in tensile stress in a shank of the traction bolt due to shifting of the head of the bolt or the nut subsequent to initial torquing down of the nut. than five degrees and the sum of the first and second pivot angles is greater than seventy degrees. 6. The vacuum cleaner connector in claim 1, wherein, the absolute value of the result of the first pivot angle minus the second pivot angle is less than five degrees and the sum of the first and second pivot angles is greater than eighty degrees. 7. The vacuum cleaner connector in claim 1, wherein said acute angle between said first longitudinal axis and said axis of rotation is substantially the same as said acute angle between said second longitudinal axis and said axis of rotation, whereby said first longitudinal axis can be rotated to be substantially parallel to said second longitudinal axis. 8. The vacuum cleaner connector in claim 7, wherein said first longitudinal axis and said second longitudinal axis intersect said axis of rotation at the same point, whereby the first and second longitudinal axises can be align to provide a substantially in-line configuration. 9. The vacuum cleaner connector in claim 5, wherein; said elongated conduit is defined by a tapered interior surface and a tapered exterior surface; wherein, said tapered interior surface tapers to a larger diameter toward the extent of said adaptor port end, and said tapered exterior surface tapers to a smaller diameter toward the extent of said adaptor port end, whereby the wall thickness of the adaptor port end is thinnest at the end of the adaptor port; wherein, said tapered interior surface defines the air passageway and is designed for removable attachment by friction fit to a conduit style vacuum cleaner hose end; wherein, said tapered exterior surface is designed for removable attachment by friction fit to a port style vacuum cleaner hose end. 10. The vacuum cleaner connector claim 9, wherein: said tapered interior surface sized for proper fit over a standard 1.25 inch diameter vacuum cleaner hose wand end. 11. The vacuum cleaner connector in claim 10, wherein: said elongated tube is sized to fit into vacuum cleaner tools with a standard 1.25 inch diameter connecting port. 12. The vacuum cleaner connector in claim 1, wherein: said means for creating friction comprises a notch and tab configuration defined on said adaptor pivot end and said tool pivot end, wherein at least one tab on one pivot end communicates with at least one notch on the other pivot end and providing sufficient holding friction for proper use of vacuum tools attached to said tool port end. 13. A vacuum cleaner connector for removable attachment between a vacuum cleaner hose and a vacuum cleaner tool, comprising: a) an adaptor member; b) a tool member, and c) a means for pivotally attaching said adaptor member to said tool member having a third air passageway therethrough; d) wherein, said adaptor member having an adaptor port end opposite said means for pivotally attaching, said adaptor port end defining an elongated cylindrical conduit having an interior surface defining a first air passage therethrough and an exterior surface; e) wherein, said interior surface defining a taper of less than five degrees for removable attachment by friction fit to a conduit style vacuum cleaner hose end; f) wherein, said exterior surface defining a taper of less than five degrees for removable attachment by friction fit to a port style vacuum cleaner hose end; g) wherein, said tool member comprises a tool port end defining an elongated tube with a taper of less than five degrees and a second air passage therethrough for removable attachment by friction fit to a vacuum cleaner tool; h) wherein, said first, and second air passage are connected together by the third air passageway to provide a substantially sealed and continuous air passageway from said adaptor port end to said tool port end for conducting suction air into said tool port end, through said tool member, through said means for pivotally attaching, through said adaptor member, out said adaptor port end and f inally into the vacuum cleaner hose; i) wherein, said means for pivotally attaching defines a pivot axis that is between thirty and sixty degrees off-axis from the direction of elongation of both said tool port end and said adaptor port end and where exists less than ten degrees difference between the tool port end and the adaptor port end off-axis angle, whereby pivoting of the tool member with respect to the adaptor member changes the angle between the longitudinal direction of said adaptor port end and tool port end. 14. The vacuum cleaner connector in claim 13, wherein: said means for pivotally attaching also defining a means for providing a friction force that resists relative rotation of the members around said pivot axis by frictional contact of at least two sliding surfaces on said means for pivotally attaching, and providing the proper amount of friction to hold said adaptor member and said tool member together at a stable angle during cleaning. 15. The vacuum cleaner connector in claim 14, wherein: said means for pivotally attaching further including a notch and tab configuration, wherein said notch and tab configuration comprising at least one notch and at least one tab, wherein the notch may communicate with the tab to provide specific pivot angles with sufficient holding friction for proper use of vacuum tools attached to said tool port end. 16. The vacuum cleaner connector in claim 13, wherein: wherein, said interior surface tapers to a larger diameter and said exterior surface tapers to a smaller diameter as one moves from said means for pivotally attaching to said adaptor port end, whereby the wall thickness of the adaptor port end is thinnest at the end of the adaptor port. 17. The vacuum cleaner connector in claim 13, wherein: said elongated cylindrical conduit having tapered interior and exterior surfaces designed for attachment to multiple sizes of conduit style vacuum cleaner hose ends and multiple sizes of port style vacuum cleaner hose ends respectfully. 18. A vacuum cleaner connector for removable attachment to a vacuum cleaner hose end, comprising: a) a tool end with an attachment surface having less than five degrees of taper for mounting a vacuum cleaner tool by friction fit; b) an adaptor port end opposite said tool end, and c) a continuous air passageway defined from said tool end to said adaptor port, whereby suction air may flow between said vacuum cleaner tool and said vacuum cleaner hose end; d) wherein, said adaptor port end defines an elongated conduit having an interior surface and an exterior surface; e) further including, a means of interior attachment for connecting said interior surface to a male conduit style vacuum cleaner hose end with a substantially airtight seal; and f) further including, a means of exterior attachment for connecting said exterior surface to a female port style vacuum cleaner hose end with a substantially airtight seal. 19. The vacuum cleaner connector in claim 18, wherein: both said means of interior attachment and said means of exterior attachment define surfaces with less than five degrees of taper for removable attachment by friction fit to the male and female hose ends respectfully. 20. The vacuum cleaner connector in claim 18, further including a pivot joint defined on said vacuum cleaner connector between said adaptor port end and said tool end; wherein said pivot joint defines a means for changing the relative orientation between the adaptor port end and the tool end, whereby the relative orientation between the vacuum cleaner hose end and the vacuum cleaner tool is adjustable by rotating said pivot joint. or in alternating diagonal upward and downward directions. 16. A device as set forth in claim 15, wherein the small lamella biasing means comprises one of upper and lower legs of respective small lamellas which limit indentations provided on inner sides of central openings of the small lamellas, compression beams supported in the projection of the first clamping plate in a region of the indentations, and compression springs for biasing the compression beams, and wherein an upper compression beam lies on each second of the upper legs of the small lamellas and is spaced from the upper legs of respective intermediate small lamellas by respective indentations of the respective upper legs, and a lower compression beam lies on each second of the lower legs of the intermediate small lamellas and is spaced from the lower legs of the small lamellas which it does not engage by indentations of the non-engagable lower legs. 17. A device as set forth in claim 16, wherein the guide member pivots relatively the bracket about a horizontal axis extending transverse to the steering shaft for effecting the height adjustment of the steering column. 18. A device as set forth in claim 1, wherein the large lamellas each have sidewise projecting spring arms located outside of a circumferential profile of respective small lamellas and supported against a side wall of respective adjacent large lamellas. 19. A device as set forth in claim 1, wherein in order to prevent an excessive tilting of the lamella stack in the open position of the locking device, the large lamellas are provided with side elevations extending above one of their respective side surfaces, each side elevation extending above a respective side surface of a respective large lamella by a distance corresponding to a thickness of a small lamella. 20. A device as set forth in claim 1, further comprising means for biasing the large lamellas in a direction of the height adjustment of the steering column and which permits to reduce backlash when a large adjustment force is applied to the steering column in the direction of the height adjustment in the closed condition of the first adjusting device, where