Conveyors: power-driven – Conveyor section – Pusher conveyor and separate load support surface
Patent
1988-04-18
1989-05-30
Spar, Robert J.
Conveyors: power-driven
Conveyor section
Pusher conveyor and separate load support surface
228 43, B65G 2510
Patent
active
048342335
ABSTRACT:
A pair of catches (74) is mounted on a sliding carriage (20) which is movable forwards and back along a guide (18) between a rear and a front dead centre (C,F), the catches being pivotable backwards and forwards between a working position and a position of rest. In order to move the sliding carriage (20) along the guide (18), a crank drive is provided. This has a crank (30), which can be driven in rotation, and a connecting rod (40), which is connected by a crank pivot joint (36) to the crank (30) and by a connecting-rod pivot point (42) to the sliding carriage (20). A control mechanism allows the catches (74) to assume their working position near the rear dead centre (C) of the sliding carriage (20) for its forward movement and to assume their position of rest near the front dead centre (F) of the sliding carriage (20) for its backward movement. The control mechanism comprises a bistable spring arrangement (44,50) which is disposed between the connecting rod (40) and the catches (74) and assumes each of two stable end positions once during each complete revolution of the crank (30).
REFERENCES:
patent: 704540 (1902-07-01), Hill
patent: 1862386 (1932-06-01), Neff
patent: 3001637 (1961-09-01), Socke
patent: 3431768 (1969-03-01), Kull et al.
Elpatronic AG
Gastineau Cheryl L.
Spar Robert J.
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