Each wheel comprises teeth having a wheel tooth geometry which enhances cooperation with the surrounding wall.

For example, the wheel tooth geometry may be designed to cooperate with the tangential force to push debris out of the teeth of each wheel during rotation of the wheel along the surrounding wall.

Helical gearwheel teeth are provided on the outer circumference of the helical gearwheel and have a helix angle.

A method of producing flank surface modifications in gear teeth by controlled removal of stock material from a work gear with a tool.

An AMR gear tooth rotation sensor and a method for utilizing it are disclosed.

The first rotational control mechanism (620) includes a ratchet (622) that is coupled to the post (600) and has ratchet teeth (623).

The first rotational control mechanism (620) also has a pawl (624) having pawl teeth (625) configured for mating engagement with the ratchet teeth (623).

The rails of the first assembly include ratchet teeth, and the rail receiving platform of the second assembly includes pawls.

The plurality of teeth of another gear interact with the plurality of teeth of the gear.

Cogs (Q) of the first cog wheel are opening cogs.

The number of the inner gear (6) is twice that of planetary gear (5).

Each wheel comprises teeth having a wheel tooth geometry which enhances cooperation with the surrounding wall.

The external gear has a plurality of teeth disposed along a periphery of the gear, each of the teeth having a convex profile.

A plurality of impeller teeth (21) are disposed on the rotating circumference surface of the impeller (20).

The number of the teeth of the internally toothed gear is different from that of the external gear.