Anton P Vasyukevich

7234686, Jun 26, 2007

Sep 28, 2004

10/952067

Peter Stone - Arcadia NY, US
Anton P. Vasyukevich - Arcadia CA, US

B66D 3/84

254391, 24134 KA, 24134 KB

A failsafe device for raising/lowering articles includes a frame and a fastener for attaching the frame to a ceiling or wall to elevated an article above the floor. A pulley or sheave is mounted on the frame about a substantially horizontal axis when the frame is mounted on the ceiling or wall. A line is entrained over the pulley and has a substantially vertical lifting line portion attachable to the article to the lifted and a substantially vertical pulling line portion arranged to be pulled downwardly by a user to elevate the article and raised upwardly to lower the article. A cam is mounted on the frame on one side of the pulling line portion and has a line engaging surface. The cam is movable between a line releasing position and a line locking position, the line engaging surface including a first engaging portion normally spaced a fixed distance from the pulling line portion to form a clearance gap in the line releasing position and a second engaging portion bridging the clearance gap a distance equal to least the fixed distance for substantially instantaneously arresting the line and preventing movement of the pulling line portion upwardly toward the pulley and corresponding downward movement of the article.

7302740, Dec 4, 2007

Mar 29, 2005

11/092030

Peter Stone - Brooklyn NY, US
Anton P. Vasyukevich - Arcadia CA, US

F16G 11/00
F16G 11/04

24136R, 188 651, 188 652, 182 5

A line clamp or stopping apparatus includes a housing one part of which serves to clamp or wedge a line subjected to high tension upwards of ten tons. The other part of the housing controls the first part. An eccentric wheel rotates freely within the first part in response to movements of the line and is guided within a space or gap between the wheel and a braking element. The control includes a toggle joint that applies significant forces on the brake when a safety is removed and a control lever is in a neutral or locking position. When the control lever is moved to the open or unlock or release position the toggle joint snaps and released the brake to increase the gap in the line receiving space to allow free movement of the line. A hydraulic brake can be used in place of the mechanical toggle joint.

20050205852, Sep 22, 2005

Apr 11, 2005

11/103315

Peter Stone - Brooklyn NY, US
Anton Vasyukevich - Arcadia CA, US

B66F003/00

254216000

A failsafe stable cleat with automatic in-line line-locking includes a frame having proximate and a remote sides on substantially opposite sides of the frame and formed with a passageway, extending between the proximate and remote sides, for receiving a line and generally defining a cleat center line along which a line can move along a first line releasing direction from the proximate to the remote sides and a line pulling direction from the remote to the proximate sides; attaching members for attaching the frame to a support surface. A cam on the frame on one side of the passageway has a line engaging portion spaced a predetermined distance from the support surface, the cam being movable between a line releasing position and a line locking position. A pusher on the frame is positioned on an opposite side of the passageway in relation to the cam for selectively applying a force on the line in the direction of the cam A cam biasing member tends to urge the cam to disengage from the line while a pusher biasing member normally tends to move the line across the gap into contact with the cam while permitting the line to return to the passageway out of contact with the cam when sufficient tension is applied by the user off the cleat center line to create a force component to offset the pushing force created by the pusher biasing member. This promotes unlocking of the line and allowing the line to move in the first line releasing direction, engagement of the line by the cam to the line locking position creating a force couple which is a function of the predetermined distance, that tends to separate the frame from the support surface. A stabilizing element compensates for and offsets the force couple independently of the dimensions or configuration of the frame.