Mechanical lift, fully nesting, telescoping mast
View Patent ↗A telescoping mast apparatus has a plurality of nesting cylinders. The telescoping mast apparatus has a plurality of telescoping cylinders and a plurality of straps. The plurality of cylinders is extendable from a base. Each strap extends from near a bottom of an outer cylinder, around an upper roller near a top of the outer cylinder, and is attached near a bottom of an inner cylinder. The plurality of straps and the plurality of telescoping cylinders intercouples in series with alternating straps and cylinders. The plurality of cylinders is extended by retracting a first strap from the outer cylinder, which raises an intermediate cylinder, which retracts the intermediate strap from the intermediate cylinder, which raises the second intermediate cylinder.
1. A telescoping mast apparatus, comprising:
a) a base;
b) a plurality of telescoping cylinders, extendable upward from the base, and including at least an outermost cylinder, an intermediate cylinder nested within the outermost cylinder, and an inner cylinder nested within the intermediate cylinder;
c) a first strap, extending around at least one lower roller near a bottom of the outermost cylinder, around an upper roller near a top of the outermost cylinder, and attached near a bottom of the intermediate cylinder; and
d) an intermediate strap, discrete from the first strap, attached near a bottom of the outermost cylinder and extending through an aperture near a bottom of the intermediate cylinder, around an upper roller near a top the intermediate cylinder, and attached near a bottom of the inner cylinder.
2. A telescoping mast apparatus in accordance with claim 1 , wherein the plurality of cylinders is extendable by retracting the first strap from the outermost cylinder which raises the intermediate cylinder which retracts the intermediate strap from the intermediate cylinder which raises the inner cylinder.
3. A telescoping mast apparatus in accordance with claim 1 , wherein the plurality of telescoping cylinders, further comprises:
a plurality of intermediate cylinders, nested inside the outermost cylinder; and
a plurality of intermediate straps, intercoupled in series with alternating cylinders in the plurality of intermediate cylinders.
4. A telescoping mast apparatus in accordance with claim 1 , wherein the plurality of telescoping cylinders, further comprises:
a pair of rollers, disposed near a top of at least one of the cylinders, the strap extending around an upper roller and past a lower roller.
5. A telescoping mast apparatus in accordance with claim 1 , wherein the plurality of telescoping cylinders, further comprises:
at least one roller, disposed near a top of a cylinder, the roller having a channel with a smaller diameter to receive the strap, and a flange with a larger diameter to bear against an adjacent cylinder.
6. A telescoping mast apparatus in accordance with claim 1 , further comprising:
a plurality of annular bearings, each annular bearing substantially circumscribing one of the plurality of telescopic cylinders, bearing against an adjacent cylinder, and aligning the plurality of telescoping cylinders.
7. A telescoping mast apparatus in accordance with claim 1 , wherein the plurality of telescoping cylinders are formed of a composite material.
8. A telescoping mast apparatus in accordance with claim 1 , further comprising:
a motor, disposed adjacent the plurality of telescoping cylinders, and having a take up reel for at least one of the straps.
9. A telescoping mast apparatus in accordance with claim 1 , wherein the first strap includes a pair of first straps coupled in parallel but at different locations, and further comprising:
a plurality of laterally off-set rollers, receiving one of the pair of first straps around the rollers, displacing the strap laterally with respect to another of the pair of first straps.
10. A telescoping mast apparatus in accordance with claim 9 , wherein the plurality of laterally off-set rollers further comprises:
an alignment frame mounted on the base at an angle to the lateral axis of the strap and at an angle to the upward axis of the strap;
a first plurality of rollers disposed in the alignment frame and offset at a relatively smaller angle with respect to the lateral axis of the strap; and
a second plurality of rollers disposed in the alignment frame and offset at a relatively larger angle with respect to the lateral axis of the strap.
11. A telescoping mast apparatus in accordance with claim 1 , wherein the first strap includes a pair of redundant straps, each redundant strap intercoupled in parallel with respect to one another between a take-up reel and the intermediate cylinder, and offset from one another at the take-up reel.
12. A telescoping mast apparatus in accordance with claim 1 , wherein the first strap includes at least two straps attached in parallel between a take-up reel and the intermediate cylinder.
13. A telescoping mast apparatus in accordance with claim 1 , further comprising:
a square tube coupled to the base and configured to be received in a receiver hitch of a vehicle.
14. A telescoping mast apparatus in accordance with claim 13 , further comprising:
a plurality of drop-down, telescoping legs coupled to the base.
15. A telescoping mast apparatus, comprising:
a) a plurality of telescoping cylinders;
b) a plurality of straps, each strap extending from near a bottom of an outer cylinder, around an upper roller near a top of the outer cylinder, and attached near a bottom of an inner cylinder, including:
i) a first strap, extending around at least one lower roller near a bottom of an outermost cylinder, around an upper roller near a top of the outermost cylinder, and attached near a bottom of an intermediate cylinder; and
ii) at least one intermediate strap, discrete from the first strap, attached near a bottom of the outermost cylinder, and extending through an aperture near a bottom of the intermediate cylinder, around an upper roller near a top of the intermediate cylinder, and attached near a bottom of an inner cylinder; and
c) the plurality of straps and the plurality of telescoping cylinders intercoupled in series with alternating strap and cylinder.
16. A telescoping mast apparatus in accordance with claim 15 , wherein the plurality of telescoping cylinders, further comprises:
at least one roller, disposed near a top of a cylinder, the roller having a channel with a smaller diameter to receive the strap, and a flange with a larger diameter to bear against an adjacent cylinder.
17. A telescoping mast apparatus in accordance with claim 15 , further comprising:
a plurality of annular bearings, each annular bearing substantially circumscribing one of the plurality of telescopic cylinders, bearing against an adjacent cylinder, and aligning the plurality of telescoping cylinders.
18. A telescoping mast apparatus in accordance with claim 15 , further comprising:
a plurality of laterally off-set rollers, receiving one of the straps around the rollers, displacing the strap laterally.
19. A telescoping mast apparatus in accordance with claim 18 , wherein the plurality of laterally off-set rollers further comprises:
an alignment frame mounted on the base at an angle to the lateral axis of the strap and at an angle to the upward axis of the strap;
a first plurality of rollers disposed in the alignment frame and offset at a relatively smaller angle with respect to the lateral axis of the strap; and
a second plurality of rollers disposed in the alignment frame and offset at a relatively larger angle with respect to the lateral axis of the strap.