Ladder clamp
OwnerVincent Bracken, Stephen Mayinventors
Life of this patent
Estimating the term…
Abstract
A ladder clamp (1) comprises a securing clamp (3) for mounting fast on a ladder and a structure engaging clamp (5) connected to the securing clamp for securing the ladder clamp to a portion of a structure. The structure engaging clamp further comprises a substantially c-shaped bracket (7) and a driving rod (19) slidable within a bore on the c-shaped bracket. A driven ratchet mechanism (21) is located between the driving rod and the c-shaped bracket for urging the driving rod towards a fixed clamping head (15) mounted on the c-shaped bracket and there is additionally provided a quick release locking means (23) to release the driven ratchet mechanism. The ladder clamp may thus be connected and disconnected in a quick and secure manner.
Claims50
1-18. (canceled)
19) A ladder clamp (1) comprising a securing clamp (3) for mounting fast on a ladder and a structure engaging clamp (5) connected to the securing clamp for securing the ladder clamp to a portion of a structure, the structure engaging clamp comprises:
- a substantially c-shaped bracket (7) having a body portion (9) bridging a pair of outwardly projecting arms (11, 13);
- a fixed clamping head (15) mounted adjacent the free end of one of the arms (13);
- a movable clamping head (17) mounted on a driving rod (19), the driving rod being slidable within a bore in the other arm (11) for movement towards and away from the fixed clamping head (15);
- a driven ratchet mechanism (21) between the driving rod and the c-shaped bracket (7) for urging the driving rod (19) and hence the movable clamping head (17) towards the fixed clamping head (15) for engagement of a structure therebetween;
- and
- a quick release locking mechanism (23) to allow disengagement of the ratchet and hence disengagement of the movable clamping head (17).
35) A ladder clamp (1) comprising a securing clamp (3) for mounting fast on a ladder and a structure engaging clamp (5) connected to the securing clamp for securing the ladder clamp to a portion of a structure, the structure engaging clamp comprises:
- a substantially c-shaped bracket (7) having a body portion (9) bridging a pair of outwardly projecting arms (11, 13);
- a fixed clamping head (15) mounted adjacent the free end of one of the arms (13);
- a movable clamping head (17) mounted on a driving rod (19), the driving rod being slidable within a bore in the other arm (11) for movement towards and away from the fixed clamping head (15);
- a driven ratchet mechanism (21) between the driving rod and the c-shaped bracket (7) for urging the driving rod (19) and hence the movable clamping head (17) towards the fixed clamping head (15) for engagement of a structure therebetween;
- and
- a quick release locking mechanism (23) to allow disengagement of the ratchet and hence disengagement of the movable clamping head (17),
- the quick release locking mechanism (23) further comprises a locking plate (33) having a through bore (35) for reception of the driving rod (19), the locking plate (33) being tiltable relative the driving rod to and from a locking configuration and a release configuration and a resilient biasing member (37) for urging the locking plate (33) into a locking configuration.
44) A ladder clamp (1) comprising a securing clamp (3) for mounting fast on a ladder and a structure engaging clamp (5) connected to the securing clamp for securing the ladder clamp to a portion of a structure, the structure engaging clamp comprises:
- a substantially c-shaped bracket (7) having a body portion (9) bridging a pair of outwardly projecting arms (11, 13);
- a fixed clamping head (15) mounted adjacent the free end of one of the arms (13);
- a movable clamping head (17) mounted on a driving rod (19), the driving rod being slidable within a bore in the other arm (11) for movement towards and away from the fixed clamping head (15);
- a driven ratchet mechanism (21) between the driving rod and the c-shaped bracket (7) for urging the driving rod (19) and hence the movable clamping head (17) towards the fixed clamping head (15) for engagement of a structure therebetween, the driven ratchet mechanism (21) further comprises a driving plate (25) having a through bore for reception of the driving rod (19), and a trigger (27) pivotally mounted intermediate its ends on the structure engaging clamp (5), one end of the trigger being in engagement with the driving plate (25), the driving plate being tiltable to and from a driving configuration in which the driving plate grips the driving rod and causes the driving rod to move towards the fixed clamping head and a release configuration in which the driving plate is able to move relative the driving rod, the driving plate being tiltable on actuation of the trigger;
- and
- a quick release locking mechanism (23) to allow disengagement of the ratchet and hence disengagement of the movable clamping head (17);
52) A ladder clamp (1) comprising a securing clamp (3) for mounting fast on a ladder and a structure engaging clamp (5) connected to the securing clamp for securing the ladder clamp to a portion of a structure, the securing clamp (3) being rotatably mounted with respect to the structure engaging clamp (5), the structure engaging clamp comprises:
- a substantially c-shaped bracket (7) having a body portion (9) bridging a pair of outwardly projecting arms (11, 13);
- a fixed clamping head (15) mounted adjacent the free end of one of the arms (13);
- a movable clamping head (17) mounted on a driving rod (19), the driving rod being slidable within a bore in the other arm (11) for movement towards and away from the fixed clamping head (15);
- a driven ratchet mechanism (21) between the driving rod and the c-shaped bracket (7) for urging the driving rod (19) and hence the movable clamping head (17) towards the fixed clamping head (15) for engagement of a structure therebetween;
- a quick release locking mechanism (23) to allow disengagement of the ratchet and hence disengagement of the movable clamping head (17).
60) A ladder clamp (1) comprising a securing clamp (3) for mounting fast on a ladder and a structure engaging clamp (5) connected to the securing clamp for securing the ladder clamp to a portion of a structure, the structure engaging clamp comprises:
- a substantially c-shaped bracket (7) having a body portion (9) bridging a pair of outwardly projecting arms (11, 13);
- a fixed clamping head (15) mounted adjacent the free end of one of the arms (13);
- a movable clamping head (17) mounted on a driving rod (19), the driving rod being slidable within a bore in the other arm (11) for movement towards and away from the fixed clamping head (15);
- a driven ratchet mechanism (21) between the driving rod and the c-shaped bracket (7) for urging the driving rod (19) and hence the movable clamping head (17) towards the fixed clamping head (15) for engagement of a structure therebetween;
- a quick release locking mechanism (23) to allow disengagement of the ratchet and hence disengagement of the movable clamping head (17);
- and
- the securing clamp (3) further comprises a substantially U-shaped bracket (39) having a locking member for securing the securing clamp (3) to the ladder.
Dependencies are inferred from the claim text.