Piston
First Claim
1. A piston and connecting rod assembly for an internal combustion engine, the assembly comprising a piston, a connecting rod and a carrier, the connecting rod having a first end operatively associated with the piston for movement therewith, and a second end connectible to a rotary output shaft, wherein a bellows spring is integrally formed with the piston, the spring acting to bias the connecting rod away from the crown of the piston, the carrier being connected to the first end of the connecting rod in such a manner that the bellows spring permits the crown of the piston to move axially relative to the carrier, and wherein at least a portion of the carrier is positioned within the bellows spring and is configured in such a manner as to hold the carrier firmly in alignment with the axis of the piston, that portion of the carrier remote from the crown of the piston being fixed to the piston, and that portion of the carrier adjacent to the piston crown carries a ring which is a sliding fit within a cylindrical wall formed within the piston adjacent to the crown of the piston, the sliding fit of the ring within said cylindrical wail and the fixing between said portion of the carrier and the piston constituting the alignment means wherein the crown and an annular base extend slightly radially outwardly beyond the circumferential edges of the bellows spring.
0 Assignments
0 Petitions
Accused Products
Abstract
A piston (11) incorporates spring means acting, in use, between the piston and an associated connecting rod so as to bias the connecting rod away from the crown (112) of the piston. The spring means (117) is integrally formed with the pistons (111) and is configured as a bellows spring.
42 Citations
21 Claims
- 1. A piston and connecting rod assembly for an internal combustion engine, the assembly comprising a piston, a connecting rod and a carrier, the connecting rod having a first end operatively associated with the piston for movement therewith, and a second end connectible to a rotary output shaft, wherein a bellows spring is integrally formed with the piston, the spring acting to bias the connecting rod away from the crown of the piston, the carrier being connected to the first end of the connecting rod in such a manner that the bellows spring permits the crown of the piston to move axially relative to the carrier, and wherein at least a portion of the carrier is positioned within the bellows spring and is configured in such a manner as to hold the carrier firmly in alignment with the axis of the piston, that portion of the carrier remote from the crown of the piston being fixed to the piston, and that portion of the carrier adjacent to the piston crown carries a ring which is a sliding fit within a cylindrical wall formed within the piston adjacent to the crown of the piston, the sliding fit of the ring within said cylindrical wail and the fixing between said portion of the carrier and the piston constituting the alignment means wherein the crown and an annular base extend slightly radially outwardly beyond the circumferential edges of the bellows spring.
-
21. A piston and connecting rod assembly for an internal combustion engine, the assembly comprising a piston, a connecting rod and a carrier, the connecting rod having a first end operatively associated with the piston for movement therewith, and a second end connectible to a rotary output shaft, wherein a bellows spring is integrally formed with the piston, the spring acting to bias the connecting rod away from the crown of the piston, the carrier being connected to the first end of the connecting rod in such a manner that the bellows spring permits the crown of the piston to move axially relative to the carrier, and wherein at least a portion of the carrier is positioned within the bellows spring and is configured in such a manner as to hold the carrier firmly in alignment with the axis of the piston wherein the crown and an annular base of the piston extend slightly radially outwardly beyond the circumferential edges of the bellows spring.
Specification