Dowels TRIZ Cases

Multiple resin zones give a rock bolt strong end anchorage, corrosion protection, and controlled yielding during seismic ground movement.

Circumferentially expandable anchor retention lets a grout sleeve hold the anchor during installation, then accommodate expansion without tearing.

A thin coupling strap keeps anchor support feet intact during drilling, then tears on screw insertion to secure gypsum board fixation.

A rotating counter-plate and integrated bushing let heavy fixtures mount through one circular front-side hole without damaging plasterboard.

A widened rear flank in the expansion sleeve groove follows the expansion body contour to improve load transfer and prevent anchor slippage.

A localized bulged zone on the anchor bolt improves lateral load transfer and symmetry without interfering with shell expansion or installation.

A sealed thread coating blocks mortar ingress in deep-set chemical anchors, enabling cone activation and full load capacity.

A temporary form fit between the sleeve and abutment wall raises pull-out resistance while keeping expansion forces low to protect concrete.

A threaded sleeve shifts screw load away from the beam, preventing push-off and keeping a one-sided panel fastening stable.

By measuring anchor tip position in the substrate, this case tracks expansion behavior, load capacity, and damage more reliably than pretension sensing.

A screw-expanded sealant anchor keeps later boreholes watertight in composite waterproofing layers by pressing elastic material outward.

A bolt anchor is set without a preinstalled nut by sizing thread overhang so a cap nut can later drive sleeve expansion and secure anchoring.

Amorphous calcium carbonate raises anchor load capacity at high temperatures while preserving workable curing in aluminous cement mortar.

Dual annular grooves let the expansion sleeve pivot and form stronger borehole undercuts, improving anchor load values with less material.

A stretchable matrix around expansion webs enables defined dowel expansion, secure anchoring, and compatibility with different screw diameters.

An overmolded elastic sock seals the holed jacket, protects polymerization components, and enables fixation before curing is complete.

Hard Zn/Ni or Zn/Fe coatings plus an antifriction layer keep dowel friction stable under high pressure, reducing wear and improving anchoring.

UV curing inside the anchoring zone shortens mortar hardening time while keeping fasteners adjustable and less temperature-dependent.

An elastically mounted anti-rotation lock moves inward during insertion and outward with the fastener to prevent damage and secure the anchor.

Rotational unscrewing with a threaded drive pin and anchor removes fixtures from concrete with less damage, time, and anchor waste.