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US 6,485,002 B1Granted
Split trailer jack
OwnerKevin Thomas Gossinventor
Life of this patent
Estimating the term…
Abstract
A trailer tongue jack system which in an exemplary embodiment has separable upper and lower housings which must be coupled together to form a complete operable system, and a driveshaft with a recessed non-standard coupling which must be coupled in order to allow the housings to be coupled.
Claims12
A jack system for a trailer tongue, comprising
- a top housing having a rotary driveshaft therein.
- a first coupling on a lower end of said driveshaft, said coupling having a first set of engagement surfaces of a non-standard shape,
- a bottom housing having a selectively extendable and retractable jackscrew having an upper end within said bottom housing:
- a second coupling on an upper end of said jackscrew, said coupling having a second set of engagement surfaces of a non-standard shape adapted to mate with and engage said first set of engagement surfaces;
- a releasable connector for selectively connecting and disconnecting said top and bottom housings so as to, respectively, engage and disengage said first and second coupling.
2 more elements
A jack system for a trailer tongue, comprising
- a driveshaft,
- a first coupling on a lower end of said driveshaft, said coupling having a first set of engagement surfaces of a non-standard shape,
- a housing configured for attachment to the trailer tongue and hazing an upwardly open upper chamber adjacent an upper end of said housing and a lower chamber below said upper chamber,
- a connector plate overlying said upper chamber and defining an access hole,
- a selectively extendable and retractable jackscrew having an upper portion within said upper chamber a lower portion in said lower chamber, and
- a second coupling on said upper portion of said jackscrew and aligned with said access hole, said coupling having a second set of engagement surfaces of a non-standard shape configured to releasably mate with and engage said first set of engagement surfaces and said second coupling being disposed within said upper chamber and below said connector plate.
3 more elements
Dependencies are inferred from the claim text.