Polaroid Corporation

Other

Arnold Hoffman

Stanley M Bloom

Kenneth S Norland

Peter A Hochstein

Frank F Hoffman

Allan E Ames

John C Charkoudian

A trolley wheel assembly (10) securely sealed to prevent loss of lubricant therefrom and entrance of contaminants therein. The assembly (10) comprises an inner race (12) disposed about an axis of rotation (14) and an outer race (16) concentrically disposed in a spaced relationship about the inner race (12). A plurality of ball bearings (18) are disposed between the inner race (12) and the outer race (16). An outer sealing ring (20) extends radially inwardly from the outer race (16) toward the inner race (12). An inner sealing ring (22) is rotatably disposed about the inner race (12), extending radially outwardly and contiguous the outer sealing ring (20). A wave washer (24) disposed about the inner race (12) biases the inner sealing ring (22) into constant friction engagement with the outer sealing ring (20). A plurality of backup inner sealing rings (26,27) provide a secondary seal about the inner race (12).

Trolley wheel assembly

A trolley wheel assembly (10,100) includes a wheel member (18,118) and a support pin (12) defining an axis of rotation. A mounting sleeve 922,122) is fixedly secured about the support pin (12). Bearing sleeve halves (30,32,130,132) are disposed about the mounting sleeve (22,122) for allowing rotation of the wheel member (18,118) about the axis of rotation. Further, a method of replacing a worn trolley wheel includes the steps of removing the worn trolley wheel from the support pin (12), mounting a bearing sleeve 926,126) over a mounting sleeve (22,122) for allowing rotation of the wheel member 918,118) relative to the axis of rotation when the mounting sleeve (22) is mounted on the support pin (12), and mounting an unworn wheel member (18) about the bearing sleeve (26) for rotation relative thereto, and fixedly securing the mounting sleeve (22) about the support pin (12).

Replaceable plastic trolley wheel and method

An electrode material is electrodeposited on a conductive substrate by contacting a first surface of the substrate with an electrolyte, establishing a vacuum at predetermined areas of the substrate opposite the surface containing the electrolyte, and causing a current flow in the areas of the conductive substrate where the vacuum has been established. Apparatus for carrying out the method is also disclosed.

Method of electrodeposition

A cadmium patch laminar electrode, comprising a dispersion of particulate cadmium in a binder matrix on a conductive plastic substrate is prepared by contacting a zinc patch electrode comprising a dispersion of particulate zinc in a binder matrix on a conductive plastic substrate with an aqueous solution of a cadmium salt. The cadmium patch electrode can be used in a primary electrochemical cell such as that employing a manganese dioxide cathode and a cadmium chloride electrolyte.

Electrochemical cell with a cadmium patch electrode

A stable high capacity battery employs a lead foil having cadmium plated on at least one side thereof to a thickness of about 0.1 to 3 mils as the anode.

Laminar batteries

A galvanic cell having a zinc anode which contains in the electrolyte as a corrosion inhibitor a chloride double salt containing mercuric ions and quaternary ions. The corrosion inhibitor may be represented by the formula:

Battery electrolyte corrosion inhibitor

A galvanic cell, particularly a primary battery cell, having as the sole electrolyte a quaternary ammonium salt, particularly tetraalkyl ammonium chloride.

Novel products

A corrosion inhibitor for battery anodes, e.g., metals such as zinc, lead, and the like, in primary battery cells, comprises a quaternary ammonium salt, particularly, tetraalkyl ammonium chloride.

Growing community of inventors

Brookline, MA, United States of America

Arnold Hoffman