Patent ID: 6793095
Filing Date: 2004-09-21
Classification: B29C,F17C,Y10S

Abstract:
A kit for forming a vessel, comprising:an insert component having a body with a top end and a bottom end, the body of the insert component formed around a spin-welding axis, the insert component including a downwardly extending inner sidewall adapted to be downwardly inserted into an orifice of a vessel body component and a skirt disposed radially outwardly of the inner sidewall and extending downwardly from the body, the skirt and the inner sidewall defining therebetween an annular channel, the channel being closed at a top end thereof and open toward the bottom; a radially inwardly facing surface of the skirt including a first segment extending downwardly from the top end of the channel to a lower end of the first segment, the first segment having a first length in an axial direction, a first shoulder having an inner end joined to the lower end of the first segment and extending radially outwardy from the lower end of the first segment to an outer end of the first shoulder, and a second segment having an upper end joined to the outer end of the first shoulder and a lower end, the second segment extending downwardly from the shoulder and having a second length in an axial direction; and a vessel body component having an orifice formed around a spin-welding axis, the orifice surrounded by an upstanding sidewall adapted to be inserted into the channel of the insert component, the upstanding sidewall having a top end and a radially outwardly facing surface extending downwardly from the top end, the radially outwardly facing surface having a third segment extending downwardly from the top end of the upstanding sidewall to a lower end of the third segment and having a third length in the axial direction, a second shoulder having an inner end joined to the lower end of the third segment and extending radially outwardly from the third segment to an outer end of the second shoulder, and a fourth segment extending downwardly from the outer end of the second shoulder to a lower end of the fourth segment and having a fourth length in an axial direction; wherein the third length is longer than the first length, the fourth length being longer than the second length, an intentional mismatch of the first and third lengths defining a first sacrificial portion adjacent the top end of the upstanding sidewall of the vessel body component, an intentional mismatch of the second and fourth lengths defining a second sacrificial portion adjacent the shoulder of the upstanding sidewall of the vessel body component, the sacrificial portions used to join the insert component to the body component upon spin-welding the insert component to the vessel body component.