| 主权项 |
1. An end member dimensioned for securement to an open end of an associated gas spring flexible wall, said end member comprising:
an end member wall having an outer peripheral extent and formed from thin-walled metal material, said end member wall including:
a first wall portion disposed along said outer peripheral extent and including a substantially-flat surface area at least partially defining a first plane of said end member;a second wall portion disposed radially outward of said first wall portion and at least partially defining said outer peripheral extent of said end member wall, said second wall portion extending from said first wall portion out of said first plane in a first direction; and,a third wall portion disposed radially inward of at least part of said first wall portion, said third wall portion including a substantially-flat surface area and a plurality of valleys extending depthwise into said end member wall in said first direction and lengthwise across said substantially-flat surface area of said third wall portion separating said substantially-flat surface area of said third wall portion into at least first, second and third substantially-flat surface area sections, said substantially-flat surface area at least partially defining a second plane of said end member that is disposed in approximate alignment with said first plane and in spaced relation to said first plane in a second direction generally opposite said first direction, said substantially-flat surface area of said third wall portion including:
said first surface area section with a first section periphery including an outer periphery portion and first, second, third and fourth inner periphery portions, said first inner periphery portion extending linearly in a chordal direction across said end member from along said outer periphery portion, said second inner periphery portion disposed in offset-spaced relation to said first inner periphery portion and extending linearly in said chordal direction across said end member from along said outer periphery portion, said third inner periphery portion extending curvilinearly across said end member from along said first inner periphery portion, and said fourth inner periphery portion extending curvilinearly across said end member from along said second inner periphery portion;said second surface area section with a second section periphery including an outer periphery portion, a first inner periphery portion and a second inner periphery portion, said first inner periphery portion of said second surface area section extending linearly in said chordal direction across said end member from along said outer periphery portion of said second surface area section; and,said third surface area section with a third section periphery including an outer periphery portion, a first inner periphery portion and a second inner periphery portion, said first inner periphery portion of said third surface area section extending linearly in said chordal direction across said end member from along said outer periphery portion of said third surface area section;said second and third surface area sections disposed in offset relation to one another with said first surface area section at least partially disposed therebetween such that said plurality of valleys includes a first valley formed into said end member wall between said first and second surface area sections and a second valley formed into said end member wall between said first and third surface area sections; and, a first securement feature disposed along said substantially-flat surface area of said third wall portion that is adapted to engage an associated external component. |
