Back to results
US 11,767,897 B1Granted
Additive manufactured symmetric low unbalance governor springs
AssigneeHamilton Sundstrand Corporation
InventorKanthi G. Kannan
Life of this patent
Estimating the term…
Abstract
A symmetric governor spring includes a first ring and a second ring coaxial with the first ring. The symmetric governor spring also includes two or more inclined braces connecting the first ring to the second ring. The first ring, the second ring, and the two or more inclined braces are integrally formed.
Claims17
An symmetric governor spring comprising:
- a first ring;
- a second ring coaxial with the first ring;
- two or more inclined braces connecting the first ring to the second ring;
- a first brace extending from the first ring to the second ring;
- a second brace extending from the first ring to the second ring, wherein the second brace and the first brace diverge from one another as the first brace and the second brace extend from the first ring to the second ring;
- a third brace extending from the first ring to the second ring, wherein the third brace and the first brace converge toward one another as the first brace and the third brace extend from the first ring to the second ring;
- and
- a fourth brace extending from the first ring to the second ring, wherein the third brace and the fourth brace diverge from one another as the third brace and the fourth brace extend from the first ring to the second ring, and wherein the second brace and the fourth brace converge toward one another as the second brace and the fourth brace extend from the first ring to the second ring,
- wherein the first ring, the second ring, and the two or more inclined braces are integrally formed.
6 more elements
An symmetric governor spring comprising:
- a first ring coaxial with a central axis;
- a second ring coaxial with the first ring;
- a third ring coaxial with the first ring;
- a first set of two or more inclined braces connecting the first ring to the second ring;
- and
- a second set of two or more inclined braces connecting the second ring to the third ring
- wherein each of the first set of two or more inclined braces connects to the first ring at a first angle, the first angle defined as an angle between the central axis and a vector tangent to a first surface of a brace of the first set of two or more inclined braces;
- wherein each of the first set of two or more inclined braces connects to the second ring at a second angle, the second angle defined as an angle between the central axis and a vector tangent to a second surface of a brace of the first set of two or more inclined braces;
- and
- wherein the first angle is equal to the second angle.
7 more elements
A ram air turbine comprising:
- turbine blades rotatably attached to a turbine hub;
- and
- a governor mechanism within the turbine hub for automatically adjusting a pitch of the turbine blades to maintain a rotational speed range of the turbine hub, the governor mechanism comprising:
- a governor shaft defining a central axis;
- an symmetric governor spring extending circumferentially about the governor shaft, wherein the symmetric governor spring comprises:
- a first ring coaxial with the central axis and defining a first end of the symmetric governor spring;
- a second ring coaxial with the central axis;
- a third ring coaxial with the central axis and defining a second end of the symmetric governor spring;
- a first set of two or more inclined braces connecting the first ring to the second ring;
- and
- a second set of two or more inclined braces connecting the second ring to the third ring;
- a fixed spring support connected to the first end of the symmetric governor spring;
- and
- a sliding spring support connected to the second end of the symmetric governor spring;
- and
- wherein the governor spring is symmetrically weighted.
13 more elements
Dependencies are inferred from the claim text.