Land vehicles: bodies and tops – Bodies – Ambulances
Patent
1978-02-06
1979-11-27
Peters, Jr., Joseph F.
Land vehicles: bodies and tops
Bodies
Ambulances
188 1C, A61G 300
Patent
active
041757831
ABSTRACT:
A stretcher having a bed portion or patient supporting surface carried by a chassis portion having a frame comprising laterally spaced longitudinal tubular members of rectangular cross section running longitudinally and horizontally the length of the stretcher and horizontal members one of which is welded perpendicular to each end of the two longitudinal members and extends equidistantly beyond each of the longitudinal members. At each end of the horizontal members is a castor wheel assembly carried rotatably in a swivel frame. The main feature of the present invention is a hydraulically actuated brake shoe that is controllably moveable toward and away from the castor wheel. The shoes have a cylindrical portion and are cup-like with an outwardly flared peripheral lip. The shoes are carried in an inverted manner with the cylindrical portion concentric with the axis of swivel. The flared peripheral lip terminates in an annular downwardly extending portion of a radius no greater than the radius of swivel of the axis of the wheel so that when the shoe is pressed against the wheel the downwardly extending portion will indent the tire of the wheel.
REFERENCES:
patent: 2110227 (1938-03-01), Koenigkramer
patent: 3304116 (1967-02-01), Stryker
patent: 3341246 (1967-09-01), Lavallee
patent: 3608102 (1971-09-01), Goodman
patent: 3820838 (1974-06-01), Limpach
Carroll John A.
Peters Jr. Joseph F.
Te Grotenhuis T. A.
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