From the hospital bed to the RV table BLOC-O-LIFT locking gas springs

Locking in any position is made possible by a special piston valve system that separates the two pressure chambers in the spring such that gas cannot travel from one chamber to the other. When the valve is open, the BLOC-O-LIFT provides force assistance, supporting user-friendly component travel based on predefined damping characteristics. When the valve is closed, the gas spring locks gently in the desired position with a slight rebound.

The standard BLOC-O-LIFT is charged with gas and is installed with the piston rod oriented downward.

• elastic locking in any position; optimal counterbalancing during lifting, lowering, opening, and closing
• comfortable cushioning and damping upon impact or at the peak of pulse-type loads
• flat spring characteristic curve (i.e., low increase in force even with strong forces or long strokes)
• compact design, minimal space requirement
• simple installation thanks to an assortment of end fittings

• soft elastic locking in the backrest adjustment mechanism of swivel chairs or massage armchairs
• height adjustment of physician’s stools with foot release
• anywhere elements require elastic locking for positioning of inherent load only (no external force)

The entire travel path of the piston is in oil in this model, which makes rigid locking possible. Although a vertical mounting orientation is necessary, this does mean that additional components, such as the separator piston, can be eliminated.

If the gas spring is to lock in the extension direction, it is installed with the piston rod oriented downward. If locking in the compression direction is needed, the gas spring is installed with the piston rod oriented upward.

• cost-effective model with very high rigid locking strength provided by oil
• rigid locking in any position; optimal counterbalancing during lifting, lowering, opening, and closing
• compact design, minimal space requirement
• an assortment of end fittings for efficient installation

• height adjustment of hospital beds, operating tables
• armrest and headrest adjustment

While the standard BLOC-O-LIFT is only filled with gas and provides elastic locking, the piston’s entire travel path of this model is filled with oil, thus providing rigid locking. 

An additional separator piston separates the gas chamber from the oil chamber. Depending on the position, it provides different blocking forces in the extension direction (extension-locked) or the compression direction (compression-locked).

The separator piston also creates the advantage that the gas spring can be installed in any orientation.

• very high locking strength provided by oil
• any mounting orientation
• locking in any position; optimal counterbalancing during lifting, lowering, opening, and closing
• compact design, minimal space requirement
• an assortment of end fittings for efficient installation

• head and foot section adjustment of hospital beds, operating tables, wheelchairs
• height adjustment of walking aids
• armrest, headrest, and driver’s seat adjustment
• table height and angle adjustment

Extension override

This function rigidly locks the gas spring in the compressed state. If the piston rod is subjected to an excessive traction force, an overload valve in the piston automatically opens, releasing the lock. The gas spring extends, thereby protecting the application from damage that would be caused by a hard impact against the floor, for example.

This model is recommended for use in treatment tables and in furniture for sitting and reclining. It enables head and foot sections to be adjusted without actuating a special release mechanism.

Compression override

In this design, the gas spring locks in the extended state. This model also has an overload valve that opens as soon as the gas spring is subjected to a load that exceeds a defined limit. The lock is released and the piston rod slowly retracts, thus protecting the application from overload. That’s how these springs afford valuable protection that frequently comes into play in the height and angle adjustment of table surfaces.

• depending on design, the gas spring protects against overload in the locked state to protect the application against damage
• simple operation
• override force can be freely specified within a range
• available as rigid-locking gas springs for mounting in vertical orientation or any orientation

• head and foot sections of treatment tables, hospital beds, massage tables
• seat and foot sections of armchairs and furniture for lying down
• table surfaces, desks with height and/or angle adjustment functionality