Rotation-retarding device and use thereof
First Claim
1. A rotation-retarding device, comprising a first member and a second member rotatable relative to said first member;
- the first member comprising an axle and the second member comprising a housing receiving the axle of the first member;
wherein at least a part of a wall of the housing is made of elastically deformable flexible material and comprises at least one working surface of cam form facing the axle of the first member; and
the axle has thereon at least one projection of rigid material said at least one projection being adapted to cooperate with said at least one working surface to retard relative rotational movement of said first and second members by deformation of said elactically deformable flexible material, said deformation increasing in an initial stage and decreasing in a subsequent stage of the relative rotational movement.
1 Assignment
0 Petitions
Accused Products
Abstract
A rotation-retarding device includes two members having rotational movement relative to each other to be retarded. The first member has an axle and the second member has a housing (25) adapted to receive the axle. A retarding arrangement includes at least a part of the wall (24) of the housing. The wall is made of elastically deformable flexible material, and has, facing the axle, at least one working surface (28) of cam form. The retarding arrangement also includes at least one projection on that axle, adapted to cooperate with the working surface (28) associated therewith to retard the movement with the resisting couple being adapted to the driving couple at each angular position.
15 Citations
29 Claims
-
1. A rotation-retarding device, comprising a first member and a second member rotatable relative to said first member;
-
the first member comprising an axle and the second member comprising a housing receiving the axle of the first member;
wherein at least a part of a wall of the housing is made of elastically deformable flexible material and comprises at least one working surface of cam form facing the axle of the first member; and
the axle has thereon at least one projection of rigid material said at least one projection being adapted to cooperate with said at least one working surface to retard relative rotational movement of said first and second members by deformation of said elactically deformable flexible material, said deformation increasing in an initial stage and decreasing in a subsequent stage of the relative rotational movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A rotation-retarding device, comprising:
-
a housing;
a shaft received in and rotatably supported by said housing, said housing and said shaft having wall portions facing each other;
at least one projection provided on a first one of said wall portions; and
at least one cam surface provided on a second one of said wall portions, said cam surface being elastically deformable by said projection during a relative rotational movement of said housing and said shall from a rest position so as to retard said relative rotational movement;
wherein the second wall portion further includes, adjacent said cam surface, a groove in which said projection is received in said rest position; and
in said rest position, the first wall portion deforms said cam surface outside said groove. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
Specification