Kernrechtsfrage
Whether the insured person is entitled to a half rather than a quarter disability pension.
Extrahierter Entscheid
The half disability pension awarded by the cantonal court is upheld because the invalidity degree of 52% remains unchanged.
Extrahierte Begründung
The Federal Court accepted the binding factual findings, including 50% work capacity in adapted work and the calculated income comparison. The appellant's argument relied on a new factual allegation about full-time capacity and improved rendement that could not be considered on appeal.