Ralph F Holland & Hart Crandell (1 - 10 of 14 results)

A container (11) for rubbish having an enclosed compartment (14) an inlet passageway formed within the walls (17) and (19) of the compartment (14), a closure (15) and an outlet passageway integrally formed within the inner and outer walls (41) and (43) of the closure (15). The inlet and outlet passa ...

A high performance sport safety helmet. The helmet is formed by an outer shell adapted for fitting upon a wearer's head, with a frontal periphery defining a centrally arched portion forming a front opening exposing the face and a major portion of the forehead of the wearer. The shell further has a b ...

A foldable rail assembly includes a first shell including a first wall defining a cutout and two apertures, a second wall defining two apertures and a top formed between the first and second walls. A second shell includes a first wall defining two apertures and a passage, a second wall defining two ...

A detent for releasably securing an inner telescoping tube within an outer telescoping tube. The said tubes having alignable openings in the walls thereof for receiving the detent. The detent is formed by a detent pin which extends through the tube wall openings and releasably latches the tubes toge ...

A diving mask includes an elongate arcuate frame having two rearward formed lateral sides, a strap adjustably connected to the frame, a substantially arc-shaped lens having a smooth mediate portion and two side portions and tightly coupled to a front face of the frame, and a facial skirt sealingly c ...

An apparatus for stabilizing an underwater object such as a pipeline includes at least one pair of weights supported on a blanket with the blanket adapted to be disposed across and in engaging contact with the top of the underwater object so that the weights are disposed on opposite sides of the obj ...

A clot mass condition of blood is evaluated by initially forming the clot in the sample of the blood and thereafter allowing the clot to condense. The initial formation of the clot is determined by measuring the drop time of a reciprocated indicator device upon which the clot is formed. The condensa ...

A knee brace includes a thigh cuff having inner and outer spaced brace arms adapted to extend along the user's thigh toward the knee, a calf cuff including inner and outer spaced brace arms adapted to extend along the user's calf toward the knee, and floating pivot axis hinges rotatably connecting t ...

A lockable latch mechanism for receiving the hasp of a padlock and locking a hinged door to a door jamb to prevent opening of the door when the door is closed and the latch is in engagement with the jamb. The latch includes a sliding latch mounted on the door including a latch plate and a latch bolt ...

A frame which is configured by means of a number of extrusions, a number of links, a number of bolts, a number of nuts and a number of nut positioners. Each link defines a number of holes. Each extrusion defines at least one longitudinal channel being cruciform as shown in a cross-sectional view tak ...