Rotary damper
First Claim
Patent Images
1. A rotary damper, comprising:
- a housing having a radially outer wall and a longitudinal axis;
a cylindrical rotor rotatably supported within said housing and having an annular configuration;
an axially recessed pivot section of said housing extending from an end wall of said housing axially inwardly into said housing toward an opposite open end of said housing and forming with said radially outer wall of said housing an annular space within said housing for accommodating said cylindrical annular rotor;
a viscous flowable material disposed within said annular space defined between said pivot section of said housing and said radially outer wall of said housing such that when said cylindrical rotor is disposed within said annular space, a pair of annular clearances, filled with said viscous material, are defined between said cylindrical rotor and said pivot section of said housing, and between said cylindrical rotor and said radially outer wall of said housing, respectively, such that said viscous material is disposed upon both opposite sides of said cylindrical annular rotor;
first radially extending shoulder means defined upon said radially outer wall of said housing;
second radially extending shoulder means defined upon said cylindrical rotor;
a trunnion integrally formed with said cylindrical rotor and extending axially outwardly from said open end of said housing;
a bearing plate, having an aperture defined therein through which said trunnion of said cylindrical rotor passes, fixedly mounted within said open end of said housing; and
a sealing element compressed between and in contact with said bearing plate and said first and second radially extending shoulder means of said housing and said rotor so as to also sealingly engage said trunnion and said radially outer wall of said housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A rotary damper comprising a housing and a cylindrical rotor rotatably supported in the housing, and an annular clearance between the rotor and housing being filled with a viscous flowable material, wherein the housing comprises a pivot extending from one end inwardly within the housing and forming an annular space with the housing; and the rotor comprises an annular cylindrical portion received by the annular space and forming annular clearances filled with the viscous material at both sides thereof.
63 Citations
13 Claims
-
1. A rotary damper, comprising:
-
a housing having a radially outer wall and a longitudinal axis; a cylindrical rotor rotatably supported within said housing and having an annular configuration; an axially recessed pivot section of said housing extending from an end wall of said housing axially inwardly into said housing toward an opposite open end of said housing and forming with said radially outer wall of said housing an annular space within said housing for accommodating said cylindrical annular rotor; a viscous flowable material disposed within said annular space defined between said pivot section of said housing and said radially outer wall of said housing such that when said cylindrical rotor is disposed within said annular space, a pair of annular clearances, filled with said viscous material, are defined between said cylindrical rotor and said pivot section of said housing, and between said cylindrical rotor and said radially outer wall of said housing, respectively, such that said viscous material is disposed upon both opposite sides of said cylindrical annular rotor; first radially extending shoulder means defined upon said radially outer wall of said housing; second radially extending shoulder means defined upon said cylindrical rotor; a trunnion integrally formed with said cylindrical rotor and extending axially outwardly from said open end of said housing; a bearing plate, having an aperture defined therein through which said trunnion of said cylindrical rotor passes, fixedly mounted within said open end of said housing; and a sealing element compressed between and in contact with said bearing plate and said first and second radially extending shoulder means of said housing and said rotor so as to also sealingly engage said trunnion and said radially outer wall of said housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification