Dental instrument hose retraction device

Fluid handling – With casing – support – protector or static constructional... – With hose storage or retrieval means

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Details

13735523, 312209, 242 475, B65H 7434

Patent

active

054508746

ABSTRACT:
A device for retracting and storing a length of hose is provided. The device is housed within a dental cabinet and includes a rectangular compartment formed by integral side walls and front and rear walls. A plurality of spool supports are positioned adjacent to the side walls. A spool is positionable within the compartment. A length of hose anchored at the rear wall is routed under the spool and through an opening in an instrument panel of the dental cabinet. At the distal end of the hose is attached the desired dental tool. In retracted position, the hose hangs in a loop or bight with the spool supported on the bight. The weight of the spool normally keeps the hose under tension. The device is operated by pulling on the distal end of the hose such that the spool is lifted onto and secured by the spool supports. In this position, tension is released from the hose. The hose is retractable by exerting a quick jerk or pull on the distal end of the hose which dislodges the spool from the spool support causing the spool to displace vertically down into the compartment, exerting a downward force on the hose to retract it.

REFERENCES:
patent: 1458115 (1923-06-01), Caldwell
patent: 2131297 (1938-09-01), Pieper
patent: 3427719 (1969-02-01), Gordon et al.
patent: 3429516 (1969-02-01), Sharp et al.
patent: 3514171 (1970-05-01), McGaha
patent: 3793729 (1974-02-01), Nyboer
patent: 3874488 (1975-04-01), Wirth

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