Process for assembling a servomotor
First Claim
1. A process for the assembly, by crimping, of a metal cylinder and a metal cover, said cylinder having a radial rim extending radially outwardly and the cover having a border of which a radial shoulder is substantially parallel to the radial rim and a horizontally extending cylindrical projection, in which a plurality of uniformly distributed oblong slots has been made, has boundaries of the slots near a free edge of the cylindrical projection substantially perpendicular to the radial rim which the boundaries oppose, said cylinder being fitted into the cover after a deformable gasket has been arranged therebetween and other components of the assembly have been enclosed, the cylinder and the cover having previously been covered with a protective coating, the process comprising the steps of:
- pressing the cover and the cylinder against one another so as to crush the gasket,stamping zones of less resistance located between said boundaries and free edge in such a way that a middle part of each stamped boundary moves away from a plane parallel to the radial rim and passing through ends of an associated boundary, andreleasing the pressure tending to crush the gasket.
1 Assignment
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Accused Products
Abstract
The invention relates to a process for the assembly, by crimping, of a cover (10) to a cylinder (12), in which the cylinder (12) has a rim (18) extending outwardly and the cover (10) has a border of which radial shoulder (14) is substantially parallel to the rim (18) and a cylindrical projection (16), in which a plurality of uniformly distributed oblong slots (22) has been made, is perpendicular to the rim which it surrounds. The cylinder (12) is fitted into the cover (10) after a deformable gasket (19) has been arranged between them and other components of the finished assembly have been enclosed, the cover (10) and cylinder (12) having previously been covered with a protective coating. According to the invention, the process involves the steps of the cover (10) and cylinder (12) being pressed against one another so as to crush the gasket (19), with zones of less resistance (24) being located between boundaries (25) of the slots ( 22) and a free edge of the cover (10) being stamped in such a way that the middle parts of the stamped boundaries (25) move away from a plane (Y) parallel to the rim (18) and passing through the ends of the slots (22), and pressure tending to crush the gasket (19) being released. The invention is used for the manufacture of brake boosters for vehicles.
14 Citations
5 Claims
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1. A process for the assembly, by crimping, of a metal cylinder and a metal cover, said cylinder having a radial rim extending radially outwardly and the cover having a border of which a radial shoulder is substantially parallel to the radial rim and a horizontally extending cylindrical projection, in which a plurality of uniformly distributed oblong slots has been made, has boundaries of the slots near a free edge of the cylindrical projection substantially perpendicular to the radial rim which the boundaries oppose, said cylinder being fitted into the cover after a deformable gasket has been arranged therebetween and other components of the assembly have been enclosed, the cylinder and the cover having previously been covered with a protective coating, the process comprising the steps of:
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pressing the cover and the cylinder against one another so as to crush the gasket, stamping zones of less resistance located between said boundaries and free edge in such a way that a middle part of each stamped boundary moves away from a plane parallel to the radial rim and passing through ends of an associated boundary, and releasing the pressure tending to crush the gasket. - View Dependent Claims (2, 3, 4, 5)
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Specification
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- Resources
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Current AssigneeBendix France
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Original AssigneeBendix France
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InventorsGautier, Jean-Pierre
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Primary Examiner(s)Eley, Timothy V.
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Assistant Examiner(s)VO, PETER DUNG BA
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Application NumberUS07/223,828Time in Patent Office1,258 DaysField of Search29/510, 29/511, 29/513, 29/432, 29/437, 29/450, 29/451US Class Current29/451CPC Class CodesB23P 11/005 by expanding or crimpingB60T 13/569 characterised by piston det...Y10T 29/49872 Confining elastic part in s...Y10T 29/49922 by bending over projecting ...
