Patent ID: 7438317

Claim:
A rollover protection device comprising: an extendable rollover bar; a hollow cassette housing configured receive the rollover bar and configured to guide the extendable rollover for extension in a linear direction relative to the cassette housing, and guidances for the rollover bar in the cassette housing; wherein the rollover bar is a fibre reinforced compound plastic material formed in a structure comprising at least one shell including a shell edge region, the shell edge region at least partly extending parallel to a direction of the extension of the rollover bar, the shell edge being guided in the cassette housing; wherein the cassette housing comprises a hollow profile made from high strength material, the cassette housing having an upper end and a lower end, the cassette housing being open at the upper and lower ends and circumferentially completely surrounding the rollover bar and the guidances; wherein the rollover bar protrudes beyond the lower hollow profile end when retracted from an extended position into the hollow profile; wherein the guidances are fibre reinforced plastic parts, the guidances engaging the shell edge region and being firmly locked to the hollow profile by a form-fit inside narrow sides of the hollow profile and protrude with free ends at least beyond the lower hollow profile end; wherein at least one guidance is provided with a pawl supporting bolt for a locking pawl co-acting with a latching cogging in the shell side edge region, and wherein the pawl supporting bolt additionally is supported in the hollow profile.