Patent · US Active

Tappet

US10794236B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignees

OTICS CORPORATION · US
KUBOTA CORPORATION · JP

Inventors

Kazunori Kawahara · Yamaguchi, JP
Masayasu Takami · Sakai, JP

Key dates

Filing date	Jan 26, 2018
Grant date	Oct 6, 2020
Priority date	—
Expiry date	Jan 26, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2303/00
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a tappet with a built-in lash adjuster, hydraulic oil is prevented from leaking from a low pressure chamber during a long-period stop.A tappet (10) includes a hydraulic lash adjuster (11) which supports a lower end portion of a push rod (96) and a tappet case (12) to which the lash adjuster (11) is internally fitted and which is reciprocally displaced in a vertical direction according to a rotating cam (85). An inner peripheral surface of the tappet case (12) is provided with an air-vent passage (34) through which air existing between the tappet case (12) and the lash adjuster (11) can be discharged upward when the lash adjuster (11) is being assembled.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.