Patent ID: 7134527

Claim:
A mast apparatus, comprising: a first mast member; a second mast member; and a cross member assembly connecting the first mast member to the second mast member, said cross member assembly comprising: an upper member extending between the first and second mast members, said upper member having an upper member upper surface and an upper member lower surface; and a lower member extending between the first and second mast members said lower member having a lower member lower surface and a lower member upper surface; wherein the upper member lower surface defines a first imaginary plane that intersects with an imaginary horizontal plane at an angle between about 28 degrees and about 58 degrees when the first and second mast members are vertically oriented; and wherein the lower member upper surface defines a second imaginary plane that intersects with the imaginary horizontal plane at an angle between about 20 degrees and about 50 degrees when the first and second mast members are vertically oriented; and wherein the upper member lower surface and the lower member upper surface are in a spaced-apart relationship, and wherein the cross member assembly further comprises at least one stiffener member connected the upper member lower surface to the lower member upper surface; the upper member, the lower member, and the at least one stiffener member defining an opening that extends through the cross member assembly.