US 12,234,403 B2
Gas pressure spring comprising an expanding wax, drive system comprising the gas pressure spring
Ulrich Probst, Hillscheid (DE); Alexander Reiser, Münstermaifeld (DE); Martin Schleich, Saffig (DE); and Felix Beib, Koblenz (DE)
Assigned to STABILUS GMBH, Koblenz (DE)
Appl. No. 17/926,325
Filed by STABILUS GmbH, Koblenz (DE)
PCT Filed May 17, 2021, PCT No. PCT/EP2021/063016
§ 371(c)(1), (2) Date Nov. 18, 2022,
PCT Pub. No. WO2021/233841, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 10 2020 113 749.4 (DE), filed on May 20, 2020.
Prior Publication US 2024/0026199 A1, Jan. 25, 2024
Int. Cl. C09K 5/06 (2006.01); C08K 5/01 (2006.01); C08K 5/05 (2006.01); C08L 91/06 (2006.01); E05F 3/02 (2006.01); F16F 9/52 (2006.01); F16F 9/53 (2006.01)
CPC C09K 5/063 (2013.01) [C08K 5/01 (2013.01); C08K 5/05 (2013.01); C08L 91/06 (2013.01); E05F 3/02 (2013.01); F16F 9/526 (2013.01); F16F 9/53 (2013.01); C08L 2205/02 (2013.01); E05Y 2900/50 (2013.01); F16F 2222/126 (2013.01); F16F 2224/048 (2013.01); F16F 2228/002 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A gas pressure spring comprising an expanding wax as a compensating medium for reducing a temperature dependency of a spring force of the gas pressure spring in an operating temperature range of the gas pressure spring spanning a minimum temperature of −40° C. to +10° C. up to a maximum temperature of +50° C. to +100° C.,
a. wherein the expanding wax comprises at least one liquid phase and at least one solid phase in the entire operating temperature range;
b. wherein the expanding wax is composed of a number of alkanes and a number of primary alcohols having chain lengths which differ from each other;
c. wherein the primary alcohols constitute a percentage of the substance amount of 10% to 30% of the expanding wax; and
d. wherein the primary alcohols contained in the expanding wax
i. comprise a number of primary alcohols having a lower melting temperature than all alkanes contained in the expanding wax, and/or
ii. comprise a number of primary alcohols having a higher melting temperature than all alkanes contained in the expanding wax.