Seaplane and dock lift
AssigneeLevitator, Inc.
InventorsErnest W. Stevenson, Randall E. Nahas
Life of this patent
Estimating the term…
Abstract
A watercraft lift supported on one or a pair of stanchions that include a sleeve assembly mounted for slidable movement on the stanchions. A platform is mounted on forks carried by a cross arm inserted into the sleeve assemblies which protrude out from the stanchions. Upright members mounted on the platform carry fender members. In a modified form of the invention a single stanchion with a similar sleeve assembly, a cross arm and twin forks, lifts a floating dock. In a further modified form, a single stanchion with a similar sleeve assembly, a cross arm and twin forks, lifts a non-floating dock. In still another modified form a single stanchion with a sleeve assembly cross arm and twin forks carries a spaced frame for receiving a seaplane.
Claims14
A watercraft lift mounted in the soil beneath a body of water comprising:
- (a) A pair of laterally spaced free standing load bearing stanchion members engaging the soil beneath said body of water;
- (b) a base plate connected to the top of each of said stanchions;
- (c) a bracket member connected to each of said base plates laterally disposed from said stanchion members and adapted for connection to a stablizing member;
- (d) a sleeve assembly slidably mounted on each of said stanchion members for travel thereon;
- (e) a fork member connected to each of said sleeve assemblies and extending laterally from said stanchion members and generally parallel to each other;
- (f) a platform connected to each of said fork members extending laterally between said stanchions for engaging said watercraft;
- (g) a lifting member connected to said sleeve assembly;
- and
- (h) mechanical multiplying means mounted on said stanchion members and connected to said lifting member for lifting substantially said entire platform above said body of water.
A floating dock lift mounted in the soil beneath a body of water comprising:
- (a) a single stanchion load bearing member driven into the earth or anchored in a foundation;
- (b) a base plate connected to the top of said stanchion;
- (c) a bracket member connected to said base plate laterally disposed from said stanchion members and adapted for connection to a stabilizing member;
- (d) a sleeve assembly slidably mounted on said stanchion member for travel thereon;
- (e) cross arms connected to said sleeve assembly and extending laterally substantially equidistant on either side of said stanchion;
- (f) a pair of fork members connected to said cross arms and disposed on opposite sides of said stanchion member;
- (g) a floating dock providing a platform for the receipt of a watercraft;
- (h) bracket means mounted on the underside of said dock adapted for cradling said fork members;
- (i) a lifting member connected to said sleeve assembly;
- and
- (j) mechanical multiplying means mounted on said stanchion member and connected to said lifting member for lifting substantially said entire floating dock and watercraft above said body of water.
A non-floating platform lift comprising:
- (a) a single stanchion load bearing member mounted in soil beneath a body of water;
- (b) a base plate connected to the top of said stanchion;
- (c) a bracket member connected to said base plate laterally disposed from said stanchion member and adapted for connection to a stabilizing member;
- (d) a sleeve assembly slidably mounted on said stanchion member or travel thereon;
- (e) a crossarm connected to said sleeve assembly and extending laterally substantially equidistant on either side of said stanchion;
- (f) fork member connected to said cross arm and disposed on opposite sides of said stanchion member;
- (g) a non-floating platform mounted on said forks adapted for lifting the hull of a watercraft;
- (h) a lifting member connected to said sleeve assembly;
- and
- (i) mechanical multiplying means mounted on said stanchion member and connected to said lifting member for lifting substantially said entire non-floating platform and watercraft above said body of water.
A seaplane lift mounted in the soil or a foundation beneath a body of water for lifting a seaplane having twin pontoons comprising:
- (a) a single stanchion load bearing member anchored in said soil or foundation;
- (b) a base plate connected to the top of said stanchion;
- (c) a bracket member connected to said base plate laterally disposed from said stanchion member and adapted for connection to a stabilizing member;
- (d) a sleeve assembly slidably mounted on said stanchion member for travel thereon;
- (e) a cross arm means connected to said sleeve assembly and extending laterally substantially equidistant on either side of said stanchion;
- (f) fork members connected to said cross arm means and disposed on opposite sides of said stanchion member;
- (g) platform means mounted on said fork members having pontoon platforms adapted for supporting said twin pontoons of said seaplane;
- (h) a lifting member connected to said sleeve assembly;
- (i) mechanical multiplying means mounted on said stanchion member and connected to said lifting member for lifting substantially said entire platform means and seaplane above said body of water;
- (j) target pontoon bumpers mounted on said platform means forwardly of said pontoon platforms for limiting the forward movement of said pontoons;
- and
- (k) pontoon guide means mounted on said platform means on opposite sides of said pontoon platforms for limiting lateral movment of said pontoons.
Dependencies are inferred from the claim text.