Shock absorber
AssigneeAce Controls, Inc.
InventorsWilliam J. Chorkey, Sr., David R. Claydon
Life of this patent
Estimating the term…
Abstract
A shock absorber having a tubular body member provided with an accumulator chamber in one end thereof, and an axially aligned piston chamber in the other end thereof. A combination piston and piston rod member is telescopically mounted in the piston chamber. A check valve assembly is mounted in the tubular body member, which permits a metered flow of shock absorber oil from the piston chamber into the accumulator chamber when the combination piston and piston rod member is moved in an inward direction in the tubular body member, and which allows a free flow of the oil from the accumulator chamber when the combination piston and piston rod member is moved in an outward direction in the tubular body member.
Claims12
A shock absorber (10) comprising:
- (a) an elongated tubular body member (12) having a stepped bore which extends inwardly from one open end (16) thereof, and which includes an outer bore portion (18) and an inner bore portion (20) having a diameter smaller than the outer bore portion (18) so as to form an annular seat (22) at a point where the outer (18) and inner (20) bores portions meet;
- (b) said inner bore portion (20) having a closed outer end (24) and functioning as an accumulator chamber (20), and having mounted therein an accumulator means (26);
- (c) a check valve assembly (28, 28a, 28d) mounted in said outer bore portion (18) and being seated on said annular seat (22);
- (d) said outer bore portion (18) comprises a piston chamber having slidably mounted therein, through the open end (16) thereof, a combination piston and piston rod member (44);
- (e) a spring means (54) operatively mounted in the piston chamber (18) for biasing the combination piston and piston rod member (44) to an initial shock absorbing position in the tubular body (12) and returning the combination piston and piston rod member (44) to said initial shock absorbing position after a shock absorbing operation;
- and,
- (f) said piston chamber (18) having mounted therein a supply of shock absorber oil, whereby when at least one of the shock absorber members (12, 44) is moved longitudinally relative to the other under an impact force, so as to move the combination piston and piston rod member (44) inwardly in the piston chamber (18), oil in the piston chamber (18) is forced through the check valve assembly (28, 28a, 28d) and into the accumulator chamber (20), and when the impact force is removed, the combination piston and piston rod member (44) is moved outwardly in the piston chamber (18) and oil is withdrawn by vacuum from the accumulator chamber (20) and passes around a part (30, 30a, 98) of the check valve assembly (28, 28a, 28d) and returns into the piston chamber (18).
Dependencies are inferred from the claim text.