Composite scaffolding plank and method of forming same
OwnerJoseph Honeininventor
Life of this patent
Estimating the term…
Abstract
A composite scaffolding plank made from a plurality of wooden boards positioned in side to side parallel abutment. A plurality of spaced pins extend transversely through the wooden boards. A cam means on the pins pulls and holds the boards together. In one preferred embodiment where the plurality of wooden boards are from a single board that is ripcut, the strength of the wooden plank is increased by cutting the plank longitudinally, positioning the resulting sections in side to side parallel abutment with the wood grains alternating directions, and to subsequently embedding a plurality of spaced pins in the sections.
Claims13
A composite scaffolding plank comprising:
- a plurality of wooden boards each having a fiber bending value of at least 2200 psi, a modulus of elasticity in the range of 1.6×106 to 1.8×106, a lengthwise direction, two opposing sides being flat and extending parallel to said lengthwise direction, each of said sides having a height, said height being the smallest dimension of said wooden boards;
- said plurality of wooden boards positioned in side to side parallel abutment;
- at least three bores extending through said plurality of wooden boards;
- at least three spaced helical pins extending transversely through and imbedded in said bores in said plurality of wooden boards, said plurality of wooden boards being under compression, normal to said wooden board sides and normal to said lengthwise direction;
- and
- said plurality of wooden boards being held together in compression by said helical pins.
A composite scaffolding plank comprising:
- a plurality of wooden boards;
- each said wooden board having a fiber bending value of at least 2200 psi, a modulus of elasticity in the range of 1.6×106 to 1.8×106 and a rectangular prism shape;
- each said wooden board having a length, a first end surface, a second end surface, a top surface, a bottom surface, and two opposing side surfaces;
- each said side surface being narrower than said top surface, said top surface having a width equal to a width of said bottom surface;
- said plurality of wooden boards positioned with at least one of said side surfaces of each said wooden board in parallel abutment to at least one side surface of another said wooden board;
- said top surfaces of said wooden boards being co-planar;
- at least three bores extending through said plurality of wooden boards;
- at least three spaced helical pins extending transversely through and imbedded in said bores in said plurality of wooden boards, normal to said opposing side surfaces;
- and
- said plurality of wooden boards being held together in compression by said helical pins.
Dependencies are inferred from the claim text.