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US 6,557,775 B1Granted
Dolly track
OwnerJohn Dillard Brinson, Gil Forresterinventors
Life of this patent
Estimating the term…
Abstract
A portable, folding camera dolly track is assembled from a number of folding track sections, each track section having a parallel pair of rails, each rail having a base and a cylindrical wheel-supporting rail element, and a transverse spacer. A continuous, removable, resilient cap is provided on each wheel-supporting rail element to provide a smooth ride over joints formed by adjoining rail elements.
Claims13
A portable track for wheeled camera dollies comprising:
- a) a plurality of folding track sections, each said track section comprising:
- i) a parallel pair of rails, each rail having a horizontally-extending base, a cylindrical wheel-supporting rail element, and a vertically extending element joining the base and the upper wheel-supporting rail element;
- ii) male and female elements provided respectively in opposite ends of each wheel-supporting rail element for engaging the complementary element of an adjoining wheel-supporting rail element;
- iii) a transverse spacer element extending between and pivotally secured at its respective ends to opposed ones of said parallel pair of rails;
- iv) means for releasably securing adjoining track sections;
- and
- b) a continuous, removable, resilient cap associated with each wheel-supporting rail element, each said continuous, removable, resilient cap formed of one or more cap sections whereby a joint formed by adjoining ones of said cap sections does not overly a joint formed by adjoining wheel-supporting rail elements, and wherein each said wheel-supporting element is configured to prevent said cap from rotation about its lengthwise axis when said cap is installed on said wheel-supporting element.
4 more elements
A folding track section for assembling a portable track for wheeled camera dollies, said track section comprising:
- i) a parallel pair of rails, each rail having a horizontally-extending base, a cylindrical wheel-supporting rail element, and a vertically extending element joining the base and the upper wheel-supporting rail element;
- ii) male and female elements provided respectively in opposite ends of each wheel-supporting rail element for engaging the complementary element of an adjoining wheel-supporting rail element;
- iii) a transverse spacer element extending between and pivotally secured at its respective ends to opposed ones of said parallel pair of rails by vertically extending pivot pins extending upwardly from and secured at their lower ends to each said base element and secured at their upper ends to pivot pin supporting means extending horizontally from and secured to said vertically extending elements.
Dependencies are inferred from the claim text.