Caterpillar Tractor Co.

Other

Glascrete, Inc.

Robert G Miller

Weldon L Phelps

Gary N Heitzman

Gary L Knepp

Clay L Hutchings

Alfred W Sieving

Allen D Myers

Michael L Render

James T Huxtable

Tommy E Robinson

Richard J Walter

Caterpillar Tractor Co

A lens cover system is provided. The lens cover system includes a sheet of material suitable for use in covering a first lens, a pin suitable for use in making a first plurality of holes in the sheet of material around the perimeter of the first lens, and a pair of scissors for cutting the sheet of material along the first plurality of holes thereby creating a first lens cover. The lens cover system also includes a storage apparatus for storing each lens cover. In one embodiment, the storage apparatus includes a card having first and second sides and an envelope. Each lens cover adheres to opposite sides of the card. The card and lens covers are then placed within the envelope for protection. In another embodiment the storage apparatus includes a book having a plurality of pages including first and second outer pages and a middle page. Each lens cover adheres to opposite sides of the middle page. The outer pages are then closed around the middle page for protection. Preferably, the card and envelope and the book fit within a credit card holder for easy and convenient storage.

Lens cover system

A method and apparatus for producing light-weight construction panels having a cementitious core layer surfaced with a layer of reinforcing fabric bonded to the two faces of the core includes the use of slurry applicator having a supporting member and a doctor in addition to a moving carrier for the slurry coated fabric. The edges of the panel also are covered with the fabric and may be open mesh edges. Cementitious slurry, for example, portland cement slurry, is applied to the fabric by means of a supporting member over which the fabric is drawn and a doctor means adjustably mounted above the supporting member. The supporting member is of a non-base-reactive material such as polypropylene or stainless steel; the use of such a supporting member permits better application of the slurry to the fabric before placement of the slurry coated fabric on the moving carrier.

Method for production of reinforced cementitious panels

A method is described for the continuous production of glass fiber mesh reinforced concrete panels consisting of a layer of light weight concrete core mix bonded to a web of glass fiber mesh on each face. An uncured ribbon of reinforced concrete is first formed, suitable for cutting into individual panels. A new method of depositing the cement slurry or core mix on the web of fiber glass has been developed; this is accomplished by conveying the web over a reversely-turning pumping roller which transfers a controlled amount of slurry or core mix to the web.

Method and apparatus for producing reinforced cementious panel webs

An apparatus is described for the continuous production of glass fiber mesh reinforced concrete panels consisting of a layer of light weight concrete core mix bonded to a web of glass fiber mesh on each face. An uncured ribbon of reinforced concrete is first formed, suitable for cutting into individual panels. A new method of depositing the cement slurry or core mix on the web of fiber glass has been developed; this is accomplished by conveying the web over a reversely-turning pumping roller which transfers a controlled amount of slurry or core mix to the web.

Apparatus for producing reinforced cementitious panel webs

Failsafe wheel slip control system and method of operating same

Method and apparatus for controlling differentially driven wheel slip

A solenoid-operated fuel valve opens automatically when the engine is started to allow fuel to flow from a fuel tank to the engine and closes automatically when the engine throttle is moved to fuel-off position to shut down flow of fuel through the governor for the engine. In the event of an emergency, operation of a manual shutdown control will de-energize the fuel valve solenoid to shut off flow of fuel to the engine compartment and will also shut down the engine by energizing a solenoid to move the fuel rack for the governor to fuel-off position. Actuation of a fire-extenguisher system for the engine will automatically de-energize the fuel-valve solenoid and energize the fuel-rack solenoid. The fuel-rack solenoid remains energized for a timed period sufficient to ensure engine shutdown in emergency situations. Control circuits are provided to ensure that current to each of the solenoids is reduced to a low holding level after initial energization and pull-in of the solenoids and are also provided to protect against damage from excessive current in the event either solenoid is shorted.

Engine and fuel shutdown control

A control for the automatic shifting of a multi-ratio power transmission. A memory is provided and programmed with the optimum vehicle speed shift points for upshift and downshift from each gear of the automatic range. The actual speed of the vehicle is periodically sampled, and each time it is, such speed is compared with the shift points for the gear which the transmission is in to see if a shift from such gear should be made. If it is determined from the speed sample that an upshift should be made, then the upshift speed points of higher gears are examined with reference to such speed sample to find the gear to which the transmission should be upshifted, i.e., the gear just above the highest gear having an upshift speed point which is less than the sampled speed. Having found such gear, the transmission is shifted thereto. Correspondingly, if it is determined from the speed sample that a downshift should be made (or can be made, in the event of a forced downshift condition), the downshift speed points of lower gears are examined with reference to such speed to find the gear to which a downshift should be made, i.e., the gear just below the lowest gear having a downshift speed point above the sampled speed. At any time, the operator may set any gear in the automatic range as the highest gear so that the transmission will not upshift beyond such gear.

Electronic transmission control and method therefor

In a vehicle having separate front and rear transmissions, a system for slaving one of the transmissions to the other so that the slave transmission will operate in the same drive range as that existing in the master transmission. Low-level binary coded signals are separately generated by each transmission to indicate the existing drive ranges of the two transmissions. The signals are sent to a control unit where they are examined and used to shift the slave transmission up or down as necessary, so that it keeps in step with the drive range in which the master transmission is operating. A unique binary code is used in the sending of drive-range signals to the control unit to prevent the control unit from shifting the slave transmission in response to errors in the signals which may occur in the event of faults in the cables through which the signals are sent.

Electronic switching control for rear transmission

A solenoid-operated fuel valve opens automatically when the engine is started to allow fuel to flow from a fuel tank to the engine and closes automatically when the engine throttle is moved to fuel-off position to shut down flow of fuel through the governor for the engine. In the event of an emergency, operation of a manual shutdown control will de-energize the fuel valve solenoid to shut off flow of fuel to the engine compartment and will also shut down the engine by energizing a solenoid to move the fuel rack for the governor to fuel-off position. Actuation of a fire-extinguisher system for the engine will automatically de-energize the fuel-valve solenoid and energize the fuel-rack solenoid. The fuel-rack solenoid remains energized for a timed period sufficient to ensure engine shutdown in emergency situations. Control circuits are provided to ensure that current to each of the solenoids is reduced to a low holding level after initial energization and pull-in of the solenoids and are also provided to protect against damage from excessive current in the event either solenoid is shorted.

A system for transmitting binary-bit words from a sending station to a receiving station wherein each word has the same number N of binary bits and wherein each different word has the same number M of binary 1's and the same number (N-M) of binary O's as every other word but in a different arrangement. The number of binary 1's in each word received is counted, and if such count is not exactly equal to M, the word is rejected as inaccurately received.

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East Peoria, IL, United States of America

Robert G Miller