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Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 4274511 | Arrangement for mounting a wear detector for brake pad An improved arrangement for mounting a wear detector for a brake pad in a backing plate. A tubular holder has a few inwardly bent claws to hold the detector in position. A sleeve is mounted on the wear detector so as to receive the claws under a shoulder ... | 06/23/1981 |
| 4241603 | Aircraft brake thermal sensor An aircraft brake includes a stack of rotors and stators located between a backing plate and a pressure plate. A brake thermal sensor includes a probe carried by the backing plate generating a signal representing the temperature of a backing plate frictio... | 12/30/1980 |
| 4231012 | Drum brake wear indicator A wear indicator for the friction material of a drum brake shoe includes a spring-loaded captive plunger carried in an elongated sleeve attached to the brake shoe. The plunger includes an enlarged head which abuts the sleeve and which is recessed below th... | 10/28/1980 |
| 4221108 | Lawnmower safety control system A control system for a rotary type lawnmower having a cutter blade housing supporting an engine and having a handle extending upwardly for manipulation by an operator, the control system including a clutch between the motor shaft and the blade, the clutch... | 09/09/1980 |
| 4204190 | Brake pad wear detection system A brake pad wear detection system comprises a brake having a brake pad and a conductive braking face, the brake pad and the conductive braking face engaging during braking. A sensor loop is embedded in the brake pad and positioned to be broken when the we... | 05/20/1980 |
| 4201974 | Brake apparatus with air actuated remote wear indicator A brake apparatus having a friction pad riveted to a brake shoe and an air conduit recessed within the pad and positioned within its working thickness. As the pad is gradually worn away, the conduit is interrupted by the formation of an opening therein be... | 05/06/1980 |
| 4188613 | Safety indicator for automobile braking system An indicator for evaluating the condition of a brake system defined by a pair of conductors operatively connected to an indicator bulb circuit embedded within the brake lining. One conductor shows when the lining touches the brake drum while the second co... | 02/12/1980 |
| 4184145 | Brake apparatus using light conductors to control remote wear indicators A brake apparatus having a friction pad riveted to a brake shoe and a light conductor extending through the pad within its working thickness. As the pad is worn away, the light conductor is severed by the abrasive action of a rotatable member causing a re... | 01/15/1980 |
| 4183012 | Abrasion alarm device for disk brake An electrical contact is embedded in an insulator which, in turn, is fitted onto the disk side of the backing plate on a disk pad. When the pad wears excessively the insulator is worn away and the contact abuts the disk so that an alarm signal may be gene... | 01/08/1980 |
| 4147236 | Pad wear indicating arrangement The arrangement indicates pad wear for brake shoes comprising a contact head embedded in the brake shoe and a socket connector adapted to be readily connected with the contact head with an electrical line leading from the socket connector to an indicating... | 04/03/1979 |
| 4020454 | Brake monitoring system A brake monitoring system particularly suited for use in monitoring brake shoe adjustment, brake lining wear and brake temperatures for rolling stock, such as trucks and the like, characterized by monitoring switches mounted on brake shoes. Selected switc... | 04/26/1977 |
| 4016533 | Device for warning of excessive wear on a brake lining A device for warning of the occurrence of excessive wear on the brake lining of a brake for a vehicle, in which a detecting element for detecting an increase in the amount of wear on the lining from a predetermined value is mounted on a rear plate support... | 04/05/1977 |
| 4013143 | Brake lining wear indicator An indicator for indicating a predetermined amount of wear of a brake lining comprising slack adjusting means operatively connected to an arrangement of brake shoes for automatically compensating for the wear occurring to the brake lining on the brake sho... | 03/22/1977 |
| 4009465 | Brake lining wear detector A vehicular brake failure detecting device for providing two warning signals independently of each other when brake linings need repair or replacement. With the ignition switch on, a first electrical circuit is closed to provide one alarm; and with the br... | 02/22/1977 |
| 4004269 | Brake lining wear warning system A brake lining wear warning system comprising a probe which becomes nonconductive when the wear of a brake lining reaches a critical value, a holding circuit adapted to be placed in a set condition in response to the nonconduction of the probe and remain ... | 01/18/1977 |
| 3992158 | Integral analytical element An integral analytical element capable of use in the analysis of liquids, the element having at least two superposed layers including a spreading layer and a reagent layer, in fluid contact. Optionally, the element can be carried on a support material. Th... | 11/16/1976 |
| 3986164 | Brake assembly wear detector A warning mechanism for detecting brake shoe wear is adapted to be fitted into a recess formed on the rear face of a brake shoe such that when the front face of the shoe, which undergoes frictional engagement during braking, is worn to a sufficient extent... | 10/12/1976 |
| 3982614 | Clutch release bearing monitoring device A device for automatically monitoring the clearance between a release bearing and release levers of a conventional clutch to thereby also monitor wear of the clutch and/or to monitor the clutch adjustment. The clutch has a clutch lever, and a clutch pedal... | 09/28/1976 |
| 3976167 | Brake pad with wear indicator A disc brake pad having an integral backing plate on its rear surface is provided with a removable wear indicator. An insertion hole for the indicator extends through the backing plate and into the pad for a distance equal to the length of the wear indica... | 08/24/1976 |
| 3975706 | Abnormality-detecting device in a brake system Abnormality-detecting device of very compact structure for particular use in the vehicle brake system for detecting the amount of wear in the brake lining element and temperature rise in the brake system. Cumulative reductions in the effective thickness o... | 08/17/1976 |
| 3958445 | Proportional brake lining wear sensor A brake lining wear indicating system is disclosed. The system includes a probe, embedded in the lining material, which wears away as the lining wears. The probe is made of an electrically conductive material having a relatively high bulk resistivity, so ... | 05/25/1976 |
| 3943486 | Lining wear warning device A lining wear warning device for a brake shoe lining rotatable member pivotally supported on a non-rotatable member so as to be engaged with a brake shoe carrying a brake lining is pivotally moved when the brake shoe is actuated; means arranged on the non... | 03/09/1976 |
| 3931727 | Method and system for detecting brake wear in a metal forming machine The specification discloses a method and system for detecting brake wear in a metal forming machine having a ram operable by a rotative drive and further having a brake for stopping the ram. The amount of rotation of the drive for the machine is determine... | 01/13/1976 |
