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US 6,929,248 B1Granted
Mechanical jack
OwnerJoseph B. Matney, Jr., Barbara Ann Matneyinventors
Life of this patent
Estimating the term…
Abstract
A mechanical jack comprising a ratcheting gear track connected to a frame. A bell crank arm is pivotally connected to the frame. An elongate handle is rotatably connected to the bell crank arm. A gear pin is connected to the elongate handle. The gear pin is for engaging the ratcheting gear track. An elevator arm is pivotally connected to the frame. The elevator arm is slidably connected to the bell crank arm, and a lift pad is connected to the elevator arm.
Claims19
A mechanical jack comprising:
- a frame;
- a ratcheting gear track connected to said frame;
- a bell crank arm pivotally connected to said frame;
- an elongate handle rotatably connected to said bell crank arm;
- and
- a gear pin connected to said elongate handle, said gear pin for engaging said ratcheting gear track.
3 more elements
A mechanical jack comprising:
- a frame;
- a ratcheting gear track connected to said frame;
- a bell crank arm pivotally connected to said frame;
- an elongate handle rotatably connected to said bell crank arm;
- a gear pin connected to said elongate handle, said gear pin for engaging said ratcheting gear track;
- an elevator arm pivotally connected to said frame, said elevator arm in slidably connected to said bell crank arm;
- and
- a lift pad connected to said elevator arm.
5 more elements
A mechanical jack comprising:
- a frame;
- a ratcheting gear track connected to said frame, said ratcheting gear track having a ring track groove therein;
- a bell crank arm pivotally connected to said frame;
- an elongate handle rotatably connected to said bell crank arm;
- a gear pin connected to said elongate handle, said gear pin for engaging said ratcheting gear track;
- an elevator arm pivotally connected to said frame, said elevator arm slidably connected to said bell crank arm;
- a lift pad connected to said elevator arm;
- a direction pin connected to said handle, said direction pin capable of engaging said ratcheting gear track to lower said bell crank arm;
- a retaining ring connected to said handle, said retaining ring complementary to said ring track groove;
- a control arm pivotally connected to said frame, said control arm pivotally connected to said lift pad;
- at least one swivel caster connected to said frame;
- at least one roller connected to said frame;
- and
- a transport handle connected to said frame.
11 more elements
Dependencies are inferred from the claim text.