Multi-head bolt and fastener system
A multi-head bolt ( 10 ) having a bolt shaft ( 12 ) defining a longitudinal axis ( 14 ) of the multi-head bolt and a multi-head ( 16 ) disposed at a first end of the bolt shaft, the multi-head having at least three pawls ( 18 ), each pawl having a fixed radial orientation relative to the bolt shaft and having a primary plane being aligned with the longitudinal axis of the bolt shaft and having a support surface ( 20 ).
1 . A multi-head bolt, comprising:
a bolt shaft defining a longitudinal axis of the multi-head bolt, the bolt shaft having a rear end defining a plurality of slots;
a multi-head disposed at a first end of the bolt shaft, the first end being opposite the rear end, the multi-head comprising at least three pawls and comprising a cone-portion,
each pawl having a fixed radial orientation relative to the bolt shaft and having a primary plane being aligned with the longitudinal axis of the bolt shaft, and each pawl having a pair of lateral sides, an angled side, a flat portion, and a support surface,
wherein the pair of lateral sides of each pawl define a first taper defined as the pair of lateral sides being tapered toward each other from the longitudinal shaft toward the angled side,
wherein the pair of lateral sides of each pawl define a second taper defined as the pair of lateral sides being tapered toward each other from the support surface toward the cone-shaped portion such that a width between the pair of lateral sides of each pawl decreases as measured from the support surface toward the cone-shaped portion.
2 . The multi-head bolt of claim 1 , wherein each pawl has an angled side that intersects the primary plane and wherein a radial distance of the angled side relative to bolt shaft linearly decreases as measured from the support surface to the first end of the bolt.
3 . The multi-head bolt of claim 2 , wherein the bolt shaft defines at least one of a cone shape or a truncated cone shape at the first end of the bolt shaft.
4 . The multi-head bolt of claim 1 , wherein at least one pawl is fin-shaped such that the primary plane lies on the longitudinal axis of the bolt shaft and the support surface is perpendicular to the primary plane.
5 . The multi-head bolt of claim 4 , wherein a width of at least one pawl is smaller than a diameter of the bolt shaft.
6 . The multi-head bolt of claim 1 , wherein the primary plane for each pawl symmetrically bisects each pawl relative to lateral sides of each pawl.
7 . The multi-head bolt of claim 6 , wherein the lateral sides are oriented at an acute angle relative to the longitudinal axis.
8 . The multi-head bolt of claim 1 , wherein the pawls extend from the bolt shaft in a star-shape configuration symmetrically relative to an outer circumference of the bolt shaft.
9 . The multi-head bolt of claim 1 , wherein at least one pawl is in the form of a fin.
10 . The multi-head bolt of claim 1 , wherein the support surface extends perpendicularly to the longitudinal axis of the bolt shaft, projecting therewith radially from the bolt shaft's outer circumference.
11 . The multi-head bolt of claim 1 , wherein the primary plane for each pawl intersects with a support surface of the pawl and an angled edge of the pawl such that the longitudinal axis lies upon the primary plane.
12 . The multi-head bolt of claim 1 , wherein the bolt shaft defines a truncated cone shape at the first end of the bolt shaft.
13 . The multi-head bolt claim 1 , wherein the bolt shaft defines a hexagonal attachment portion at an opposite end relative to the multi-head to facilitate engagement with a tool.
14 . A fastener system for connecting and aligning a plurality of elements together, the system comprising: the multi-head bolt of claim 1 ; and
the plurality of elements each defining an opening extending therethrough, the opening having a shape corresponding to a cross-section profile of the multi-head of the multi-head bolt through which opening the at least three pawls pass,
wherein the elements comprises at least one of a formwork panel or a formwork element.
15 . A multi-head bolt comprising:
a bolt shaft defining a longitudinal axis of the multi-head bolt, the bolt shaft having a rear end defining a plurality of slots;
a multi-head disposed at a first end of the bolt shaft, the first end being opposite the rear end, the multi-head comprising four pawls and comprising a cone-portion,
each pawl having a fixed radial orientation relative to the bolt shaft and having a primary plane being aligned with the longitudinal axis of the bolt shaft, and each pawl having a pair of lateral sides, an angled side, a flat portion, and a support surface,
wherein the pair of lateral sides of each pawl define a first taper defined as the pair of lateral sides being tapered toward each other from the longitudinal shaft toward the angled side,
wherein the pair of lateral sides of each pawl define a second taper defined as the pair of lateral sides being tapered toward each other from the support surface toward the cone-shaped portion such that a width between the pair of lateral sides of each pawl decreases as measured from the support surface toward the cone-shaped portion,
wherein the plurality of slots define a +configuration, with each of the plurality of slots aligning with a respective pawl such that the primary plane of each respective pawl intersects with one of the plurality of slots, the plurality of slots being configured to provide visual guidance of an angular position of the four paws during bolt installation.