Blood drawing chair

• US 3,897,973 A
• Filed: 06/05/1973
• Issued: 08/05/1975
• Est. Priority Date: 06/05/1973
• Status: Expired due to Term

• Current Assignee: John W. Winter, Larry K. Long, William F. Jackson
• Original Assignee: John W. Winter, Larry K. Long, William F. Jackson
• Inventors: Long, Larry K., Jackson, William F., Winter, John W.
• Primary Examiner(s): Frazier, Roy D.
• Assistant Examiner(s): Lyddane, William E.
• Application Number:
  US05/367,262
• Time in Patent Office: 791 Days
• Field of Search: 297/83,90,330,342,75,78,84 269/325,328
• US Class Current: 297/75
• CPC Class Codes: A47C 1/035 in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
• CPC Class Codes: A61G 15/02 Chairs with means to adjust position of patient; Controls therefor

Abstract

A chair for use in blood drawing permitting blood to be drawn from a patient in either a sitting or reclining position, as preferred by the patient or attending physician, paramedic, or other using personnel, and which ethically accommodates use to varied preferences of techniques and practices of individual technicians throughout the world. The chair is of a practical, safe and easy to use construction and accommodates to installation and operational requirements in different use locations and settings. The chair includes articulated back, seat and leg portions, and an arm assembly, all interconnected by a linkage system with means operable to erect the chair to a desired sitting position or lowered to a desired reclining position.

Claims

1. A blood drawing chair comprising:

A. a base assembly including;

i. a fixed base;

ii. a rectilinearly movable seat assembly mounted on said fixed base;

B. a back hingedly attached to the rear of said seat assembly;

C. a chair front leg rest hingedly attached to the front of said seat assembly;

D. an arm assembly articulated to said back operable to permit maintaining the arm assembly in an erected position said articulation comprising a bracket assembly interconnecting said arm assembly and said back, including pivotally interconnectEd link arms respectively attached at ends thereof to said back and said arm assembly, and arm brake pad means interconnected between said connected ends of said link arms, said link arms being operable to allow articulation of said arm assembly to raised or lowered positions and further including pawl indexing means, operable to selectively maintain said arm assembly in said erected position through contact with arm stop blocks fixedly positioned relative to said chair back, whereby said arm assembly can be selectively maintained in said erected position during said movement of said seat assembly, E. actuating means for rectilinearly moving said seat assembly with respect to said fixed base; and

F. means operable upon said movement of said seat assembly forwardly or rearwardly to simultaneously pivot said chair front leg rest and said back with respect to said seat assembly to a patient reclining position or a patient sitting position respectively.

2. A blood drawing chair as claimed in claim 1, said actuating means for rectilinearly moving said seat assembly including an extensible actuator having one end fixed to said fixed base and an extensible arm connected to said movable seat assembly, drive means for said actuator, actuation of said drive means serving to extend said extensible arm and slide said movable seat assembly with respect to said fixed base.

3. A blood drawing chair as claimed in claim 1, a chair front actuator mounted for movement with said rectilinearly movable seat assembly and having an extensible arm interconnected with said chair front leg rest, said chair front actuator being automatically operable upon forward or rearward movement of said movable seat assembly to pivot said chair front to an elevated or lowered position.

4. A blood drawing chair as claimed in bar 1 including a bar link mechanism interconnecting said back and seat assembly operable upon movement of said seat assembly to raise and lower said back by pivoting with respect to said seat assembly.

5. A blood drawing chair as claimed in claim 3 including switch means operable upon rectilinear movement of said seat assembly to actuate said chair front actuator at predetermined positions of movement to raised or lowered position.