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WO/1999/002870A1 |
A device for limiting torque, the device comprising a body, the body having a number of tool engageable surfaces (12). Slots (18) are formed in at least one tool engagable surface, a slot defining an arm (11) with respect to an adjoining...
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WO/1998/055269A1 |
The invention relates to a screwdriver adapter (1) which is provided with a receiving part (3) with an inner space (5). A nut (2) is arranged at the open end of the pot-shaped receiving part (3) in such a way that it is torsionally rigid...
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WO/1998/046892A1 |
A threaded fastener (32) including a nut (10) and a bolt (30) with the nut (10) including a ring section (14) and a nut section (12) with the nut section (12) having a main body portion (16) and a neck portion (18) with the neck portion ...
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WO/1998/035791A1 |
The invention relates to a method and a device for producing screw assemblies, which can be preferably used in industrial production assembly processes, in workshops and in installation technology supervision involving high safety standa...
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WO/1998/028548A1 |
A mechanical sensor for use with bolts (90), nuts (29), eye bolts and other fasteners is provided to sense fastener tension and to mechanically indicate that tension and changes therein by mechanically measuring deformation of the substr...
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WO/1998/026899A1 |
A bolting system for securing at least two structures having a bolt, a coupling nut, a hydraulic tensioner, and a lock nut. The bolt has a body with a threaded end and another end with a bolt head. The coupling nut is engageable with the...
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WO/1998/006605A1 |
A pretensioner fitting arrangement comprising an arming bracket (3) having a flange (16) operable to arm the pretensioner when the bracket is fitted, and having means for limiting access to the means (2) by which the pretensioner is fitt...
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WO/1998/002667A1 |
The present invention provides an innovative method and apparatus for determining continuous, visual clamp load status during tightening and throughout the life of a fastener. The present invention provides a nondeformable element (or in...
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WO/1998/000660A1 |
A seal for hydraulic assemblies operating at high temperatures having adaptations (19, 20, 49, 50) for low pressure sealing and configured to move across the gap to be sealed at higher pressures with an angled base on a slope (23, 44) or...
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WO/1997/044644A2 |
A load-indicating device comprising a load-bearing member (10) adapted to deform when stressed. Ultrasonic waves are directed into one end (12) of the load-bearing member and ultrasonic echoes are received at the same end by ultrasonic w...
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WO/1997/038827A1 |
A safety device at preloading of bolts for providing the bolt with an internal stress in mounted condition, and which bolt (3) at a first end is secured to a first element (1) and extends through a second element (6), which shall be clam...
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WO/1997/029288A1 |
A pre-load indicating washer (20) for properly tensioning a joint held together by an externally threaded member and an internally threaded member. The pre-load indicating washer (20) has a plurality of protuberances (26), struck and par...
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WO/1997/027812A1 |
The invention concerns a screw for insertion into a bone, in particular for securing plates which help to fix bone parts. The screw has a body comprising a threaded section and a head which adjoins the latter directly or indirectly and o...
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WO/1997/025540A1 |
An axial tensioned bolt (10) and nut (18) for bolting together a turbine or similar piece of equipment. The bolt (10) has parallel threads and the nut (18) has a coil insert (60). The bolt (10) is stretched and tensioned by a hydraulic t...
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WO/1997/025542A1 |
A clamping screw (10) is provided with a threaded member (11) forming an attachment thread which screws together with the thread for attachment, an operating ring (12) supported on the outer surface of the outer end of said threaded memb...
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WO/1997/014893A1 |
The present invention relates to doors (29) of aluminium, said doors (29) being hung with external hinges (10-18, 21-26) screwed onto the door panel (29) and onto the frame (28). In known constructions the hinge (10-18, 21-26) is screwed...
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WO/1997/013982A1 |
A setting device for setting a threaded fastener to a predetermined torque, for example for setting a bolt of a masonry anchor, comprises a torque-transmitting body (2) interposed between the tool and the threaded fastener, the body (2) ...
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WO/1997/003296A1 |
A device for measuring the extension of a threaded bolt (1) or screw tightened by means of a nut (2) has an extension measurement scale (15) at the circumference of the nut (2), the screw head or a tightening element (7) capable of rotat...
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WO/1996/041703A1 |
A bolt (10) extends with clearance through a through-hole (11) in a first element (12), which can be clamped against a second element situated therebehind by means of a nut (14) applied on a threaded end portion (13) of the bolt (10) pro...
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WO/1996/031706A1 |
A shearable fastener has a threaded shank (10) adapted for engagement with a threaded bore and a head (12) formed for engagement with a drive tool. The shank (10) is formed with a series of axially separated weakenings (14) defining a se...
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WO/1996/022471A1 |
A fastener system (22) includes an applicator (24) for engagement by a tool, and a fastener such as a screw (10) with threads (14) in a first hand direction for engaging a workpiece. The applicator and fastener are threaded (23) together...
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WO/1996/021957A1 |
A connector (10) or fastener (200) is used for connecting first and second parts (12, 14). The connector (10) includes a coupling assembly (11) for mounting on the first part (12), the assembly (11) comprising a member (30) carrying a fi...
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WO/1996/012114A1 |
The invention relates to a fastening element with a torque-limiting function, comprising on the one hand a fastening member (2, 2') with working threads (4), that is to say threads which are active for the fastening function of the eleme...
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WO/1996/003587A1 |
The invention concerns a device (V) for preventing excessive load when threaded bolts (1) or nuts (1) are screwed tight. In order to achieve a reliable and structurally simple solution, it is proposed that a separating layer (T) should b...
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WO/1996/001378A1 |
A breakable bolt assembly comprising a pin member (12), a collet member (14) and a thumb knob member (16). The assembly is designed to mount without the use of hand or power tools, and features a pin member (12) which breaks apart when t...
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WO/1995/033598A1 |
A method of tensioning a bolt (6) interconnecting first and second flanges (2, 4) comprises the steps of locating the bolt (6) to be tensioned in a carrier (16) incorporating hydraulic tensioning means (18, 20, 22), positioning the carri...
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WO/1995/033917A1 |
The washer is of frusto-conical shape as viewed externally and consits of a body (21) and a tapered flange (23) depending therefrom. When the lip (28) of the flange rests on a flat surface and the washer is subjected to a predetermined c...
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WO/1995/031646A1 |
A screw comprises a head (1) and a shank (2) having a threaded section (3) for screwing into a preformed hole having a corresponding threaded section. The head (1) and the shank (2) are provided on two separate parts (10, 20), and a torq...
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WO/1995/029343A1 |
A rotatable device, such as a screw, a bolt, etc., comprises a cylindrical clip (4) inserted into a bore (3) in the head of the rotatable device. The clip (4) is compressed to a certain extent when inserted into the bore in order to conf...
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WO/1995/025229A1 |
The invention which is the subject of this application relates to screw clampling apparatus for the application of a clamping force onto an article. The apparatus comprises a shank and a drive means for exerting a driving force on the sh...
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WO/1995/022700A1 |
A torque-limiting screw-threaded fastener has a body (10) provided with a principal head (11) by means of which that body may be rotated, the body being screw-threaded over at least part of its length. A socket (14) is formed in the prin...
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WO/1995/022009A1 |
A device for measuring a load on a part such as a bolt (2), comprises a socket (15) have walls defining an interior space (17) wherein the socket engages the bolt for transmitting a load to the bolt. An electromagnetic acoustic transduce...
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WO/1995/021333A1 |
Pre-tensionable screw made of a shape-memory metal as well as method for using such screw for achieving a desired prestress in a screw coupling by utilizing the capability of the shape-memory metal to deform after reaching a predetermine...
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WO/1995/015442A1 |
In a pre-tensioning device for fastening elements, a pre-tensioning unit (4, 5) is attached to one end of a fastening element (2) at a first region and arranged at its other region to be supported by a rigid structure (1a, 20), in relati...
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WO/1995/001240A1 |
The present invention aims to provide a screw (10) for fastening which is capable of being both fastened and loosened strongly simply with a direct manual rotating operation. The device (10) is provided with a screw member (11) with a fe...
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WO/1994/029080A1 |
A mechanical tensioner for a nut-bolt assembly has two input elements (2, 3) engaging with one another and engageable by an actuating tool so that the input elements (2, 3) are turnable relative to one another in opposite directions, one...
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WO/1994/027126A1 |
A method to accurately determine and assure proper clamping force or bolt tension in fastening systems comprises statistically sampling washer or flanged bolt lots for clamping force versus deflection relationships, encoding the lots and...
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WO/1994/011718A1 |
The joint comprises a first joint component (1) having axial aperture and a second joint component (4) having an axial aperture arranged coaxially with the aperture in the first joint component. Joint components (1) and (2) have a gasket...
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WO/1994/006699A1 |
A liveload assembly (10) for maintaining torque on bolts having a stack guide (14) with a thread (28) on the exterior side wall, a plurality of compressible belleville washers (12) stacked inside the stack guide (14), and a retainer cap ...
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WO/1994/007042A1 |
A hydraulically assisted fastener has a pressure means (13) nested in a recess (15) or groove in a nut (11) or a thrust washer with a filler neck (20, 31, 44) whereat a nipple (14) can be used as a means of pumping grease or oil to the p...
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WO/1994/002749A1 |
The invention relates to a torque nut or torque screw, i.e. a fastening device with fastening threads, i.e. threads which are operative for the fastening function of the device, and with an indication means which is integrated in the dev...
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WO/1994/001689A1 |
A locking fastener in which coacting ramp surfaces (120a, 130a) are provided on a nut and washer assembly to generate wedging forces in response to backing off movement of the nut (120) which urge the nut (120) into tighter engagement wi...
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WO/1993/025351A1 |
A securing arrangement (29) for bolting together turbine casings flanges (111 and 112) by means of junction bolts (13) passing through aligned aperture pairs (191), consists of a hydraulic stressing device (50), for assembly on the bolt ...
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WO/1993/022568A1 |
For elongating and relaxing a bolt, a stud and the like (1) having an axis and arranged in an object (2), the stud (1) is connected with a first part (4) which is movable only in an axial direction so as to pull the stud (1) in the axial...
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WO/1993/021449A1 |
A fastener includes load sensing means (10) having parts (14; 15) relatively movable in response to change in length of the fastener body (2) under applied loads which are registered on a scale (19) by the relative movement. The load sen...
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WO/1993/016293A1 |
A load-indicating fastener, such as a bolt (10), has a bore (18) which extends from an end face (16) of the bolt and which can receive a gauge pin (30). The assembly of the bolt (10) and gauge pin (30) is pre-set by applying a predetermi...
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WO/1993/006375A1 |
The tamper proof anchor bolt assembly (10) includes a frangible nut assembly (22) and a tamper resistant skirt (24) attached to one end of an expandable anchor bolt device (16, 26). An expandable anchoring means (38, 40) attached to the ...
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WO/1993/005306A1 |
An annular piston and cylinder device comprises an annular cylinder and a piston therefor, the piston having sidewall portions which extend into the cylinder towards the base thereof in the form of tapering annular webs which together de...
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WO/1992/014938A1 |
A bolt (10) for attaching a first member (12) to a second (14) with a desired compressive force. The bolt has a cylindrical body (16) with a threaded section (22) on a first end (20) and a head (18) on a second end (24). The cylindrical ...
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WO/1992/013203A1 |
A hollow bolt (10) contains first and second electrical contact elements (13, 16) which are moved apart when the bolt is subjected to a predetermined tensile load. A carrier (14) for a first of the contact elements contains an inductor (...
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