US 11,982,333 B2
Actuator and a bow
Bent Schultz Hansen, Herlufmagle (DK)
Assigned to BSH Industries ApS, Hørsholm (DK)
Filed by BSH Industries ApS, Hørsholm (DK)
Filed on Jan. 27, 2023, as Appl. No. 18/102,382.
Application 18/102,382 is a continuation of application No. 17/289,120, granted, now 11,592,071, previously published as PCT/EP2019/078081, filed on Oct. 16, 2019.
Claims priority of application No. PA 2018 70705 (DK), filed on Oct. 31, 2018.
Prior Publication US 2023/0228313 A1, Jul. 20, 2023
Int. Cl. F41B 5/14 (2006.01); F16F 9/02 (2006.01); F16F 9/32 (2006.01); F41B 5/10 (2006.01)
CPC F16F 9/3278 (2013.01) [F16F 9/0218 (2013.01); F41B 5/1403 (2013.01); F16F 2230/04 (2013.01); F16F 2230/06 (2013.01); F41B 5/10 (2013.01)] 13 Claims
OG exemplary drawing
 
9. A bow comprising a frame and a string, the string being connected to the frame via two cams being positioned at opposite ends of the frame, the frame comprising:
a central portion having two extreme portions;
a first portion and a second portion, each of the first and second portions of the frame having a first end and a second end, each of the first and second portions of the frame being rotatably attached, at the first end, to or at an extreme portion of the central portion, each of the cams being attached to or at the second end of one of the first and second portions of the frame; and
at least two pneumatic actuators, of which one is positioned between the central and first portion of the frame, and another one is positioned between the central and second portion of the frame, the at least two pneumatic actuators each comprising:
a lubricating element provided in a channel of the respective pneumatic actuator, the lubricating element comprising:
a first surface facing a first portion of the respective pneumatic actuator;
a second surface facing a second portion of the respective pneumatic actuator;
one or more channels extending from the first surface to the second surface; and
a lubricant in or on the lubricating element; and
a venting element in sliding engagement to at least one of the first portion and the second portion.