Piston
OwnerGeorge F Galvininventor
Life of this patent
Estimating the term…
Abstract
A piston includes a spring acting between the piston crown and a connecting rod so as to bias the connecting rod away from the crown of the piston. The spring may include a pair of disc springs supported at their edge portions. The support may be a substantially annular support including a pair of rings fixed to the edge portions of the disc springs and an annular band that engages the rings and permits relative movement between the band and the rings.
Claims15
A piston incorporating spring means acting, in use, between the piston and an associated connecting rod so as to bias the connecting rod away from the crown of the piston, wherein the spring means is constituted by a pair of disc springs whose circumferential edge portions are supported and separated by a substantially annular support member, the spring means being located substantially in the region of the piston crown and extending over substantially the entire transverse cross-section of the piston, the spring means being such as to permit the crown of the piston to move axially relative to the connecting rod, wherein the support member is constituted by respective rings fixed to the circumferential edge portions of the disc springs, and by an annular band formed with curved support surfaces for rolling engagement with the rings.
A piston incorporating spring means acting, in use, between the piston and an associated connecting rod so as to bias the connecting rod away from the crown of the piston, wherein the spring means is constituted by a pair of disc springs whose circumferential edge portions are supported and separated by a substantially annular support member, the spring means being located substantially in the region of the piston crown and extending over substantially the entire transverse cross-section of the piston, the spring means being such as to permit the crown of the piston to move axially relative to the connecting rod, wherein the piston is provided with a domed surface which is engageable with the disc spring remote from the piston crown, and the piston crown is provided with a domed surface which is engageable with the disc spring adjacent to the piston crown.
A piston including:
- a crown;
- a connecting rod;
- and
- a spring located between the crown and the connecting rod so as to bias the connecting rod away from the crown, the spring including a pair of disc springs whose circumferential edge portions are supported and separated by a substantially annular support member.
Dependencies are inferred from the claim text.