US 12,146,510 B2
Hydrostatic cylinder with gas pressure accumulator
Marc Weigand, Hafenlohr (DE); and Markus Junker, Mainhausen (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/770,213
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Oct. 20, 2020, PCT No. PCT/EP2020/079475
§ 371(c)(1), (2) Date Apr. 19, 2022,
PCT Pub. No. WO2021/078727, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 10 2019 216 453.6 (DE), filed on Oct. 25, 2019.
Prior Publication US 2022/0397127 A1, Dec. 15, 2022
Int. Cl. F15B 1/24 (2006.01); F15B 13/02 (2006.01); F15B 15/14 (2006.01)
CPC F15B 1/24 (2013.01) [F15B 13/027 (2013.01); F15B 15/1428 (2013.01); F15B 2201/205 (2013.01); F15B 2201/31 (2013.01); F15B 2201/4155 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A cylinder assembly, comprising:
a hydrostatic cylinder defining an outer circumference;
an annular gas pressure accumulator arranged on the outer circumference of the hydrostatic cylinder; and
a first cylinder flange and a second cylinder flange that are spaced apart from each other,
wherein the annular gas pressure accumulator defines a gas chamber and a pressure medium chamber,
wherein the annular gas pressure accumulator includes a resilient or movable separation element that is configured and arranged to separate the gas chamber from the pressure medium chamber,
wherein the gas chamber is configured to be connected to a constant pressure source,
wherein the annular gas pressure accumulator is positioned between the first cylinder flange and the second cylinder flange,
wherein the annular gas pressure accumulator is a low-pressure accumulator,
wherein the pressure medium chamber has a low-pressure connection,
wherein the low-pressure connection is arranged or formed on the first cylinder flange,
wherein the annular gas pressure chamber includes an inlet and a non-return inlet valve,
wherein the inlet is configured to be connected to the constant pressure source,
wherein the non-return inlet valve is arranged between the constant pressure source and the inlet,
wherein the inlet is arranged or formed on the second cylinder flange,
wherein the annular gas pressure chamber further includes (i) an outlet, and (ii) a non-return outlet valve connected to the outlet,
wherein the non-return outlet valve is pretensioned by a spring, and
wherein the outlet is also arranged or formed on the second cylinder flange.