Scaffold safety pin
OwnerRonald L. Rielandinventor
Life of this patent
Estimating the term…
Abstract
A scaffold is disclosed having a platform and at least a pair of generally horizontally extending, spaced support members beneath the platform. A pair of longitudinally spaced openings are formed in the platform through one surface to extend generally perpendicular thereto. A hollow cylinder is mounted in each opening having a pin mounted therein for movements between a retracted position and an extended, operative position. The platform can be disposed on the support members with the pins in the operative positions to prevent the platform from sliding off the support members, and the platform can be turned over to move the pins to the retracted positions for transport and storage purposes.
Claims9
Safety apparatus for scaffolds, comprising:
- (a) a scaffold having a platform and at least a pair of generally horizontally extending support members beneath said platform spaced a first distance apart, said platform having opposing surfaces;
- (b) a pair of openings in said platform through one surface extending generally normal to said one surface;
- (c) safety pin means mounted within each said opening comprising a hollow cylinder having a pin freely mounted therein for limited movement between a retracted position with respect to said one surface and an operative position extending out of said opening beyond said one surface such that with said platform disposed with said one surface facing downwardly said pins are moved by gravity to said operative positions, and with said platform disposed with said one surface facing upwardly said pins are moved by gravity to said retracted positions;
- and
- (d) said openings being located a distance apart with respect to said first distance such that sliding movement of said platform in either direction will cause at least one of said pin means, in the operative position, to encounter a support member to prevent further sliding movement thereof.
Safety apparatus for scaffolds, comprising:
- (a) a scaffold having a platform and at least a pair of generally horizontally extending support members beneath said platform spaced a first distance apart, said platform having opposing surfaces;
- (b) a pair of openings in said platform through one surface spaced a second distance apart and extending generally normal to said one surface;
- and
- (c) safety means mounted within each said opening comprising a hollow housing having a stop member freely mounted therein for movement between a retracted position with respect to said one surface and an operative position extending out of said opening beyond said one surface such that with said platform disposed with said one surface facing downwardly said stop members are moved by gravity to said operative positions to prevent said platform from sliding off said support members, and with said platform disposed with said one surface facing upwardly said stop members are moved by gravity to said retracted positions.
In a scaffold having a platform with a support surface and an oppositely facing surface, and generally horizontally extending support members beneath said platform, the improvement comprising a generally vertically disposed opening in said oppositely facing surface of said platform and safety means mounted within said opening comprising a hollow housing having an elongated stop member mounted therein for movement between a retracted position with respect to said oppositely facing surface and an operative position extending out of said opening beyond said oppositely facing surface such that with said platform disposed with said support surface facing upwardly said stop member is moved by gravity to said operative position to engage a support member upon sliding movement of said platform, and with said platform disposed with said support surface facing downwardly said stop member is moved by gravity to said retracted position.
A scaffold platform having opposing surfaces, a pair of longitudinally spaced openings extending into said platform through one surface generally perpendicular to said one surface, and safety means mounted within each said opening comprising a housing having a bore with a stop member mounted therein for unrestricted movement between a retracted position within said bore and with respect to said one surface, and an operative position extending out of said bore beyond said one surface such that with said platform disposed with said one surface facing downwardly said stop members are moved by gravity to said operative positions, and with said platform disposed with said one surface facing upwardly said stop members are moved by gravity to said retracted positions.
Dependencies are inferred from the claim text.