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US 4,989,847 AGranted
Clamping device
OwnerGrant Chapmaninventor
Life of this patent
Estimating the term…
Abstract
An improved bar-clamp apparatus includes an elongate bar which has a first clamping jaw affixed adjacent one end of the bar. A carrier is mounted for selective reversible movement on and along the bar. A second clamping jaw faces the first jaw and is mounted on a carrier for movement therewith and relative thereto. A one-hand-actuatable drive mechanism is connected to the carrier and is actuatable to drive the carrier along the bar towards an end thereof.
Claims6
An improved bar-clamp apparatus comprising:
- an elongate bar;
- a first clamping jaw affixed adjacent one end of said bar;
- a carrier mounted for selective reversible movement on and along said bar;
- a second clamping jaw facing said first jaw and mounted on said carrier for movement both therewith and relative thereto;
- and
- a trigger/lever, one-hand-actuatable drive mechanism drivingly connected to said carrier, actuatable to drive said carrier along said bar towards the bar's said one end, including a handle disposed on one side of said bar, and an elongate, pivoted trigger/level, whose long axis generally parallels that of said bar, disposed on the opposite side of said bar.
3 more elements
An improved bar-clamp apparatus comprising:
- an elongate bar;
- a first clamping jaw affixed adjacent one end of said bar and extending outwardly from a side of said bar substantially normal thereto;
- a carrier mounted for selective reversible movement on and along said bar, said carrier including a carrier body which surrounds a stretch of said bar, a carrier arm extending outwardly from said carrier body substantially parallel to and on the same side as said first clamping jaw, and a drive mechanism for driving said carrier along said bar, said mechanism including a body extension extending outwardly from said body substantially parallel to said bar, a lever pivotably mounted on said carrier body and extending generally in the same direction as said body extension, said lever including a trigger portion and an actuator portion, said actuator portion having first and second bores therethrough, a lever pivot pin being received in one bore in the lever and in a bore in said carrier body, a drive grip pin being received in the other actuator portion bore, and a drive grip constructed and arranged to contact said lever and said bar to drive said carrier along said bar in a first direction towards an end of said bar, wherein said drive grip is spring biased to a first, neutral position and wherein said drive grip is shiftable by said lever to a drive position wherein said drive grip grips said bar, said drive grip remaining in a stationary position, and wherein said lever acts on said stationary drive grip thereby moving said carrier and wherein said drive-grip pin riding on said drive grip to shift said drive grip between said neutral position and said drive position;
- and
- a second clamping jaw mounted on said carrier arm for movement therewith and relative thereto.
2 more elements
An improved bar-clamp apparatus comprising:
- an elongate bar having a first clamping jaw fastening means adjacent at least one end thereof;
- a first clamping jaw having at least one clamping head thereon affixed adjacent one end of said bar;
- a carrier reversibly mounted for movement in a selected direction along the bar, said carrier including a drive mechanism thereon which is constructed and arranged to drive said carrier along said bar in a first direction towards an end thereof, said drive mechanism including a drive grip which is mounted on said bar, an actuator to shift said drive grip from a neutral position to a driving position, and a position holding grip, which prevent movement of said carrier along said bar in a direction opposite said first direction, and a trigger lever which is pivotably mounted on said carrier and which acts on said drive grip to move said carrier in said first direction;
- and
- a second clamping jaw mounted on said carrier and having a clamping head thereon, a second clamping jaw adjustment mechanism having a carrier arm extending outwardly from said carrier, a threaded shaft having said second clamping jaw carrier thereon and received in rotatably, adjustably received in said carrier, and a handle for adjusting the position of said second clamping jaw relative to said carrier, said second clamping head being aligned with said first clamping head.
2 more elements
Dependencies are inferred from the claim text.