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US 6,578,401 B2Granted
Hemming machine
AssigneeValiant Corporation
InventorDominique Baulier
Life of this patent
Estimating the term…
Abstract
A hemming machine is disclosed having a base, a plate mounted to the base and a nest adapted to support a workpiece to be hemmed which is vertically slidably mounted to the base above the plate. An inflatable bladder is sandwiched in between the plate and the nest or even the base and the plate while a source of incompressible fluid selectively inflates the bladder thus vertically displacing the nest relative to the plate.
Claims10
A hemming machine comprising:
- a base,
- a plate mounted to said base,
- a nest adapted to support a workpiece to be hemmed, said nest being vertically slidably mounted to said base above said plate,
- an inflatable bladder sandwiched between said plate and said nest,
- a source of incompressible fluid,
- means for selectively inflating said bladder with incompressible fluid from said source to thereby displace said nest from said plate, and
- means for maintaining said bladder in abutment with said plate and said nest,
- wherein said maintaining means comprises pneumatically powered means for pressurizing said bladder at a low pressure of less than ten psi above atmosphere.
5 more elements
The invention as defined in claim wherein said moving means comprise a “push-pull” chain activated by an electric servo-motor through a pinion.
A hemming machine comprising:
- a base,
- a plate mounted to said base,
- a nest adapted to support a workpiece to be hemmed, said nest being vertically slidably mounted to said base above said plate,
- an inflatable bladder sandwiched between said plate and said base,
- a source of incompressible fluid,
- means for selectively inflating said bladder with incompressible fluid from said source to thereby displace said plate from said base, and
- means for maintaining said bladder in abutment with said plate and said nest,
- wherein said maintaining means comprises pneumatically powered means for pressurizing said bladder at a low pressure of less than ten psi above atmosphere.
5 more elements
Dependencies are inferred from the claim text.