Intravenous pole holder

Claim 1

An improved clamping device for a substrate which comprises: (a) a pair of substantially parallel first and second plate elements adapted to conform to said substrate, arranged in a substantially parallel arrangement to permit the plate elements to move between an expanded open position whereby the substrate to be clamped may be placed between first and second plate elements, and a contractable closed position whereby the substrate is secured and compressed between the closed plate elements; (b) the said first plate element defining a channel running from one end thereof part way along the direction thereof; (c) said second plate element defining a longitudinal raised section running from an end thereof part way along the longitudinal direction, adapting to said longitudinal groove of said first plate element when said clamping device is in said open expandable open position; (d) pin means joining said first plate element to said second plate element; (e) screw means threadingly engaging said first plate element and impinging on said longitudinal raised section of said second plate element, adjustable over a range of positions to engagingly move said first and second plate elements between said open expandable position and said contractable closed position.