Load Modified Fasteners TRIZ Cases

A shearable fastener design integrates a removable blocking insert to restrict drive tool access and prevent over-torque during installation.

A cable connector system uses a shear bolt to secure electrical cables with precise torque control.

Segmented annular clamping nut distributes tensioning force via parallel screw passages, preventing stuck screws during high temperature dismantling.

A tension device uses a radial assembly of semicylindrical parts to prestress threaded rods without requiring large axial clearance.

A grounding connector uses a shear bolt to retain conductors within a recessed body.

A bolt tip folds into radially arranged odd-numbered nut grooves to create discrete angular locking positions.

Permanent jacking screws drive a reusable thrust plate against the mantle, eliminating torch ring hazards while preventing thread stripping.

Hydraulic clamping secures the gyratory crusher cross member, eliminating epoxy bonding to simplify maintenance while maintaining high mechanical load capacity.

Torque tool with RFID reader automates bolt sequence verification, eliminating manual marking errors and ensuring accurate production history tracking.

A hydraulic tensioning device applies axial force to parallel threaded rods using coaxial crowns and annular pistons.

Deflectable wings absorb excess force to prevent stud breakage and heat shield damage during high-torque assembly.

A screw tensioning device uses a threaded actuator to drive a piston that pressurizes fluid for axial force.

Conical thrust surfaces resolve jackbolt forces radially and axially, preventing nut lock-up and galling during heavy machinery assembly.

Deformation indicators on the concrete screw shaft reveal plastic deformation, preventing reuse of degraded fasteners and maintaining load-bearing reliability.

An indicating mechanism aligns portions with reference marks to prevent component damage from over-tightening.

Partial-cylindrical barrel nut with relief grooves redistributes tensile stress concentrations away from threaded bores.

A conic-helical thread on a tapered screw shaft creates a friction fit that prevents air loss and screw slippage in tubeless tires.

A tightening member uses surface shrinking to create an interference fit that transmits rotational force to a threaded fastener.

A self-drilling anchor uses a piercing element to create a hole and an expansion portion to lock in place during screw insertion.

A dilatant bypass element absorbs hammering impacts, protecting sensors from damage while maintaining accurate tension measurement.

A safety shear bolt uses a coupling mechanism to retain the torque head after shearing.

A hydraulic bolt tensioning device distributes preload force across external and internal threads to reduce overall component dimensions.

One-piece fastener head shears lugs to limit torque, then cam ramps allow removal without separating parts.

A binding screw with a tapered penetration portion establishes electrical contact with stranded wire.

Helical ramps ramp up axial contact force to prevent slipping on coated surfaces while axially one-sided castles enable slim socket access.

A hydraulic tensioner uses a sliding inner body to drive a split nut for efficient bolt tensioning.

Extending the driver profile into the threaded shaft allows pliers to grip and unscrew broken bolts, eliminating difficult drilling operations.

A direct tension indicating washer uses a four-walled protuberance to deflect under compression and eject indicating material through a channel.

Disposable accessory with a breakable element prevents over-tightening and eliminates the need for expensive, complex calibration tools.

A shear bolt with asymmetric flat faces and a reduced cross-sectional notch transmits torque while enabling controlled axial shearing.

A fast extraction threaded nut uses variable section notches to split via a wedge mechanism for rapid disassembly.

A guide ramp limits the radial clamping force of an expansion pin, preventing glass breakage from excessive axial screwing stress.

A torque limiting set screw features a controlled break region with defined shear points to enable precise fastener separation.

Continuous conical side surfaces and radial corrugation increase cushioning scope, maintaining preload force across temperature changes.

Planetary gear assembly applies uniform torque to multiple jackbolts simultaneously, eliminating time-consuming individual tightening operations.

A bolt shank integrates a deformation portion and space forming portion to accommodate fastening tool torque.

Segmented form-fitting elements and preloaded shear bolts resolve the strength versus break-off reliability trade-off in vehicle barriers.

Segmented anchor tendons use rigid portions for secure grout engagement while deformable sections plastically elongate to absorb rock burst energy.

A mechanical anchor uses a thin shaft section that ruptures at a specific torque to verify installation strength.

A torque controlling break screw uses a hollow shaft and nut to secure conductors in connectors.

A folded portion on thin metal plates extends thread engagement and provides a bearing surface, improving breakdown torque without adding parts.

A washer with a tubular body and probe deflects under load to indicate compression.

Segmented locking nut uses jackscrews to compress the mantle, reducing turning effort and preventing damage during installation.

Stacked drive and driven disks distribute friction across multiple interfaces to achieve high torque limits without increasing fastener size or spring force.

Fastening structure uses annular space to absorb tensile stress at screwing hole edge, preventing chipping while maintaining assembly integrity.

A rotary fastener uses a defined torque threshold in its stop element to prevent overtightening damage while maintaining optimal bracing force.

Rotational eccentric geometry expands the anchor sleeve radially, eliminating axial displacement and preventing sleeve slippage in concrete.

A spring-loaded interchangeable sleeve retracts within a piston to enable controlled engagement with threaded bolts.

Segmenting the fastener isolates friction from the threaded connection, ensuring reliable tear-off torque independent of material properties.

A failure detection sensor uses a brittle second member to fracture during structural deformation, enabling automatic risk identification.