Boat lift
OwnerCharles J. MacKarvichinventor
Life of this patent
Estimating the term…
Abstract
A boat lift includes a base frame portion for supporting a boat; an upright frame portion extending substantially upright from the base frame portion, the upright frame portion comprising a swing arm, the swing arm comprising: a shock absorption assembly comprising a resilient shock absorber; an arm body slidably coupled to the shock absorption assembly proximate a first swing arm end of the swing arm; and a swing pivot proximate the first swing arm end; and a dock mounting assembly configured to mount the boat lift frame to a dock, the swing arm pivotably coupled to the dock mounting assembly by the swing pivot.
Claims27
A boat lift comprising:
- a base frame portion for supporting a boat;
- an upright frame portion extending substantially upright from the base frame portion, the upright frame portion comprising a swing arm, the swing arm comprising:
- a shock absorption assembly comprising a resilient shock absorber;
- an arm body slidably coupled to the shock absorption assembly proximate a first swing arm end of the swing arm;
- and
- a swing pivot proximate the first swing arm end;
- and
- a dock mounting assembly configured to mount the boat lift frame to a dock, the swing arm pivotably coupled to the dock mounting assembly by the swing pivot.
A boat lift comprising:
- a base frame portion for supporting a boat, the base frame portion comprising a boat support member extending laterally between a first lift side of the boat and a second lift side of the boat lift;
- an upright frame portion extending substantially upright from the base frame portion, the upright frame portion comprising a swing rail at the first lift side;
- and
- a torsion assembly pivotably coupling the swing rail to the boat support member, the torsion assembly comprising:
- a main axle extending laterally through an interior of the boat support member and rotatably relative to the boat support member;
- and
- a torsion tube fixedly coupled to each of the swing rail and the main axle.
A boat lift comprising:
- a base frame portion for supporting a boat, the base frame portion comprising a boat support member extending laterally between a first lift side of the boat and a second lift side of the boat lift, the boat support member defining a longitudinal slot formed in a top wall of the boat support member and extending along a length of the boat support member;
- an upright frame portion extending substantially upright from the base frame portion;
- and
- a bunk bracket slidably mounted to the boat support member by a bracket fastener, wherein the bracket fastener engages and slides within the longitudinal slot to reposition the bunk bracket along the length of the boat support member.
Dependencies are inferred from the claim text.