Grating fastener
OwnerPaul J. Zinkann, David R. Tuttle +1inventors
InventorsPaul J. Zinkann, David R. Tuttle, Thomas G. Tuttle
Life of this patent
Estimating the term…
Abstract
A grating fastener is provided having a base member, a saddle clamp and a swivel clamp rotatably mounted on the base member and spring biased perpendicular to the base member for ease of installation. The fastener is easily installed by rotating the swivel clamp parallel to the base member and inserting the assembly between two adjacent bearing bars and allowing the swivel clamp to spring to its engaged position automatically engaging the bottoms of two adjacent bearing bars. The saddle clamp engages the tops of the same two bearing bars engaged by the swivel clamp.
Claims17
In a fastening device for fastening a parallel bar grating to a support member comprising:
- a base member having a width less than the spacing between adjacent grating bars, an aperture disposed centrally in said base member and an engagement portion disposed on a first end of said base member;
- an upper clamp adapted to engage the top of a bearing bar;
- a threaded fastening means passing through said upper clamp and engaging said base member;
- and a swivel clamp having a length greater than the spacing of adjacent bars and adapted to engage the bottoms of two adjacent bars and being rotatably mounted on said base member on an end opposite to said engagement portion, the improvement which comprises:
- spring means biasing said swivel clamp against a first rotation stop in said engaged position and said swivel clamp being rotatable against said spring bias to a second position parallel to said base member such that said base member and said swivel clamp may be passed through adjacent bearing bars.
A fastening device for fastening a parallel bar grating to a support member comprising:
- a base member having a first end and a second end, a width less than the spacing between adjacent grating bearing bars, a threaded aperture in and disposed generally centrally of said base member and an engagement portion disposed on said first end of said base member;
- a saddle clamp having two downwardly opening recesses spaced to engage adjacent grating bars and an aperture disposed centrally in said saddle clamp;
- a threaded fastener passing through said saddle clamp central aperture and threadably engaging said base member threaded aperture;
- a swivel clamp having upstanding ears spaced to engage the outsides of two adjacent grating bars in the engaged position and being rotatably mounted on said base member second end, said swivel clamp being rotatably mounted on said base member by means of a hollow neck portion on said swivel clamp retained in an aperture in said base member;
- a biasing spring disposed within said hollow neck portion;
- said swivel clamp having a projection riding in an arcuate race on said base member concentric with said swivel clamp mounting aperture, said arcuate race having a first stop at one end thereof and a second stop at the other end thereof, said first stop spaced one quarter turn from said second stop;
- said spring biasing said swivel clamp with respect to said base member such that said projection buts against said first stop and said swivel clamp is biased perpendicular to said base member.
Dependencies are inferred from the claim text.