Dowels TRIZ Cases
- Tapered Anchor Expanding Mandrel for Plastic Dowel Stress Reduction
A truncated cone anchor part tapers the tip element cross-section within an expanding mandrel shaft.
- Screw Anchor With Sand Dowel For Dynamic Load
Sand dowel screw anchor resolves high installation torque by using sand compaction to transmit tensile forces without concrete cracking.
- Expansion Dowel Cantilever Wing Radial Force Distribution
Cantilever wing elements on a dual-plastic expansion dowel distribute radial force to prevent rotation and boost holding power without complex structures.
- Hollow Profile Dowel with Tension Wedge Expansion
A hollow profile dowel uses a tension wedge to expand its plastically deformable shaft for secure anchoring.
- Three-Section Expansion Screw Bracing Mechanism
A three-section folding strip in an expansion screw distributes compression evenly, preventing wall damage from excessive rim pressure.
- Segmented Thermal Insulation Anchor with Variable Thread Geometry
Variable thread geometry on a segmented anchor shaft secures elastic insulation while passing through component holes, preventing thermal bridges and rotation.
- Cup-Shaped Protective Element for Fastening Anchoring
A cup-shaped protective element with a peripheral outer wall contains escaping hardenable mass during fastener installation.
- Rock Bolt Fixative Loading Device with Thrust Mixing
A thrust member displaces fixative from a chamber into drill holes for rock bolt installation.
- Spreading Dowel With Ribs For Radial Expansion
Radial expansion tongues distribute forces while ribs prevent shell detachment, improving holding power in construction anchors.
- Toggle Fastener Beam Self-Alignment for Uneven Rear Surfaces
A toggle fastener beam pivots on a band to align with an internal thread during insertion.
- Expansion Anchor Cutting Projection Undercut Creation
Rotating expansion sleeve with cutting projections creates a structural undercut in the borehole wall during installation.
- Self-Drilling Expansion Fastener Integrally Formed From Sheet Metal
An integrally formed sheet metal fastener merges drilling and locking to eliminate pre-drilling steps, reducing installation time and labor costs.
- Friction Bolt Assembly Radial Deformation Anchoring
Radial deformation of a split tubular body via an actuated expansion element increases anchoring force against rock strata.
- Anchor Bolt with Segmented Taper Member for Crack Prevention
Segmenting abutment parts along the taper axis distributes expansion forces to prevent concrete wall cracks.
- Toggle Fastener With Movable Strap For Thin-Walled Installation
A toggle fastener uses a movable strap to position the beam accurately.
- Cantilever Fastener Assembly for Hollow Substrates
A mechanically biased cantilever fastener assembly uses a bolt to fold its body sections outward.
- Elongated Plug With Pivotable Lips Resists Drive-Out
Pivotable lips on an elongated plug expand under screw insertion to generate reaction forces against drive-out loads.
- Pivotable Nut Blind Anchor Bolt for One-Sided Access
A pivotable nut anchor assembly enables insertion through small apertures via rotational alignment changes.
- Metal-Plastic Expansion Anchor Knot Formation
Twisted metal legs in a plastic base adapt to building cavities, resolving the trade-off between structural stability and material versatility.
- Expansion Anchor Closure Means for Reliable Anchoring
Closure means seal puncture indentations on the expansion anchor shaft, preventing particle interference that compromises anchoring reliability in boreholes.
- Tendon Anchorage Using Casting Compound and Collar
Circumferential collar enables non-positive connection with hardening casting compound for secure tendon anchorage.