20240035496. PISTON UNIT OF A WORKING CYLINDER simplified abstract (Bümach Engineering International B.V.)

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PISTON UNIT OF A WORKING CYLINDER

Organization Name

Bümach Engineering International B.V.

Inventor(s)

Josef Bueter of Haren/Altenberge (DE)

PISTON UNIT OF A WORKING CYLINDER - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240035496 titled 'PISTON UNIT OF A WORKING CYLINDER

Simplified Explanation

The abstract describes a piston unit for a working cylinder that includes a piston rod with an outer thread and a piston with an axial bore that has an inner thread. The outer and inner threads form a common thread portion with a complementary conicity and thread geometry. When the outer and inner threads are tightened together, they create an elastic deformation within the elastic limit of the piston rod and piston, fixing them radially and axially without play.

  • The piston unit includes a piston rod with an outer thread and a piston with an axial bore and an inner thread.
  • The outer and inner threads have a complementary conicity and thread geometry.
  • When the outer and inner threads are tightened together, they create an elastic deformation within the elastic limit of the piston rod and piston.
  • The elastic deformation fixes the piston rod and piston to each other radially and axially without play.
  • The elastic deformation is maintained both with and without the application of pressure by a pressure medium in the working cylinder.

Potential Applications:

  • This technology can be applied in various hydraulic and pneumatic systems that use pistons and cylinders, such as automotive engines, industrial machinery, and hydraulic presses.
  • It can also be used in applications where precise and reliable axial and radial fixation of piston rods and pistons is required.

Problems Solved:

  • The technology solves the problem of play or looseness between the piston rod and piston in a working cylinder.
  • It ensures a secure and tight coupling between the piston rod and piston, preventing any unwanted movement or vibration.

Benefits:

  • The elastic deformation created by the threaded coupling provides a reliable and durable connection between the piston rod and piston.
  • The absence of play or looseness improves the overall performance and efficiency of the working cylinder.
  • The technology allows for easy assembly and disassembly of the piston unit without compromising its functionality.


Original Abstract Submitted

a piston unit of a working cylinder includes a piston rod that has an outer thread on a piston-side coupling portion. a piston has an axial bore which has an inner thread and in which the piston rod is received. the outer thread and the inner thread define a common thread portion. the outer thread and the inner thread have a complementary conicity and a complementary thread geometry. the conicity has a conicity angle alpha of 0.3 to 5 degrees. the outer thread and the inner thread abut one another in a coupling end position in the thread portion in a gap and define a sealing plane. the outer thread and the inner thread have, in the thread portion in the coupling end position, an elastic deformation within the elastic limit of the piston rod and the piston. the elastic deformation is brought about by a surface pressure via a tightening torque. the piston rod and the piston are radially and axially fixed to one another without play in the coupling end position by the elastic deformation, and the elastic deformation is within the elastic limit both with and without an application of pressure by a pressure medium in the working cylinder.

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