Dog clutch having fluid pressure activated sliding internal gear

摘要

A dog clutch having a sliding internally toothed annular power transmitting collar gear (41) which can reciprocatingly slide coaxially to engage and disengage a driving shaft portion (22) from a load shaft (9). The temporarily engaged shaft (22) and collar gear (41) have cooperative teeth (42,36) in which there is a first set of teeth having a given axial length and a second interleaved set having a shorter length. The collar gear is sandwich between a pair of abutting ring-shaped pistons (51,52) within a housing cylinder. Pressurized fluid in either chamber of the cylinder drives the pistons to slide axially. Such a dog clutch mechanism is particularly suited to disengagingly couple a power takeoff (PTO) to an hydraulic pump on a commercial vehicle such as a waste disposal truck.

主权项

1. In a dog clutch assembly, comprising:
a first shaft having an interface end portion with teeth on its outer diameter, the first shaft having a longitudinal axis; a second shaft having an interface end portion with teeth on its outer diameter, the second shaft having a longitudinal axis that is collinear with the longitudinal axis of the first shaft; a gap between the first shaft and the second shaft in a direction along the longitudinal axes of the shafts; an annular clutch having teeth along its inner diameter that engage the teeth of the first shaft and teeth of the second shaft when the clutch is in an engaged position, and that engage only the teeth of the first shaft or the teeth of the second shaft when it is in a disengaged position, wherein the engaged position and the disengaged position are linearly displaced from one another along the longitudinal axis of the shafts; an improvement wherein said annular clutch comprises:
a first subset of said annular clutch teeth having a first length; and;a second subset of said annular clutch teeth having a second length shorter than said first set.