US 11,814,900 B2
Device for securing a rung in a concrete wall
Ulrich Schlüsselbauer, Altenhof am Hausruck (AT)
Appl. No. 16/628,884
Filed by Ulrich Schlüsselbauer, Altenhof am Hausruck (AT)
PCT Filed Jun. 22, 2018, PCT No. PCT/AT2018/050015
§ 371(c)(1), (2) Date Jan. 6, 2020,
PCT Pub. No. WO2019/006480, PCT Pub. Date Jan. 10, 2019.
Claims priority of application No. A 50562/2017 (AT), filed on Jul. 6, 2017.
Prior Publication US 2020/0224496 A1, Jul. 16, 2020
Int. Cl. E06C 9/04 (2006.01); E02D 29/12 (2006.01); F16B 13/06 (2006.01); F16B 13/08 (2006.01); F16B 21/08 (2006.01)
CPC E06C 9/04 (2013.01) [E02D 29/122 (2013.01); F16B 13/068 (2013.01); F16B 13/0833 (2013.01); F16B 13/0858 (2013.01); F16B 21/08 (2013.01); F16B 21/086 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for fastening a step iron in a concrete wall, said device comprising:
two anchor sleeves being supported and securingly moulded in the concrete wall;
the step iron being generally U-shaped and having two parallel anchor bolts each being inserted in and form-fittingly accommodated by a respective one of the anchor sleeves, each of the anchor sleeves and a respective one of the anchor bolts accommodated thereby forming a respective set of coupling parts, and
a detent assembly between the coupling parts of one of the sets that includes at least one detent tongue that is sprung in a radial direction and is supported on one of the coupling parts of the set, and structure on the other coupling part of the set defining a detent recess that receives the detent tongue, and
wherein said other coupling part has a guide surface that is engageable with the detent tongue and is inclined in a circumferential direction and extending in the radial direction over an engagement depth of the detent tongue, and said guide surface adjoins the detent recess at least in the circumferential direction.
 
17. A device for fastening a step iron in a concrete wall, said device comprising:
two anchor sleeves being supported in the concrete wall;
the step iron being generally U-shaped and having two parallel anchor bolts each form-fittingly accommodated by a respective one of the anchor sleeves, each of the anchor sleeves and a respective one of the anchor bolts accommodated thereby forming a respective set of coupling parts, and
a detent assembly between the coupling parts of one of the sets that includes at least one detent tongue that is sprung in a radial direction and is supported on one of the coupling parts of the set, and structure on the other coupling part of the set defining a detent recess that receives the detent tongue, and
wherein a guide surface engageable with the detent tongue and being inclined in a peripheral direction and extending in the radial direction over an engagement depth of the detent tongue adjoins the detent recess at least in the peripheral direction; and
wherein the at least one detent tongue is resilient and is supported on an open spring ring inserted non-rotatably into a peripheral groove of said one of the coupling parts; and
wherein the other coupling part has a second detent recess, and the open spring ring has another detent tongue arranged diametrically opposed to the detent tongue and each of the detent tongues engages in a respective one of said detent recesses.