In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 8167114 | System and method for product removal A product removal method that includes providing a blade adjacent a conveyor belt along a path of the conveyor belt and operating the conveyor belt. A product removal system that has a rod oriented generally parallel to a conveyor drum is disclosed. A frame is rotat... | 05/01/2012 |
| 8157082 | Segment bodies and scrapers for conveyor belt scrapers Example segment bodies and scrapers for conveyor belt scrapers are disclosed. An example segment body for a conveyor belt scraper includes a mounting body that can be connected to a segment carrier in a rotationally fixed manner, a holding portion that is designed f... | 04/17/2012 |
| 8069971 | Bulk material handling system and control A bulk material handling system includes a bulk material handling apparatus to convey bulk material and a bulk material handling accessory to aid the bulk material handling apparatus in conveying the bulk material. The bulk material handling accessory includes a con... | 12/06/2011 |
| 8042678 | Device for stripping impurities of a belt webbing from conveyor belt systems A device for stripping soiling from a belt webbing in a conveyor belt system includes at least one lamella support disposed on a system carrier so as to be pivotable about a first axis and at least one stripping lamella disposed on the at least one lamella support s... | 10/25/2011 |
| 8042679 | Belt cleaner A belt cleaner is provided in which a scraping portion of a scraper becomes in contact with the belt surface over the full width thereof even when the trough-shape of the belt surface is different from the shape as expected, thereby the leavings on the belt surface ... | 10/25/2011 |
| 8028819 | Constant pressure and variable cleaning angle scraper blade and method for designing same A scraper blade for a conveyor belt cleaner is provided. The scraper blade being adapted, when appropriately tensioned against a conveyor belt, to maintain a plurality of predetermined cleaning angles, relative to the conveyor belt, as the scraper blade is progressi... | 10/04/2011 |
| 7950519 | Belt scraper assembly and scraper blade thereof A belt scraper assembly having a blade holder and a scraper blade disposed therein, wherein a stiffener extending in a longitudinal direction with respect to the belt is provided in the blade body to resist bending of the blade. A scraper blade having a body with a ... | 05/31/2011 |
| 7819237 | Belt scraper tensioning assembly A belt scraper tensioning assembly attaches to a belt conveyor machine to bias a scraper blade toward a conveyor belt. The tensioning assembly is fully assembled prior to mounting to the belt conveyor. The tensioning assembly comprises a mounting plate with a centra... | 10/26/2010 |
| 7798310 | Conveyor belt cleaner including a scraper blade mounting apparatus having a biasing member A conveyor belt cleaner for scraping material from a surface comprising a mounting assembly operatively attached to a support frame, the mounting assembly comprising at least one scraper blade, a biasing member associated with each scraper blade and a scraper blade ... | 09/21/2010 |
| 7775341 | Bulk material handling system A bulk material handling accessory such as a conveyor belt cleaner for use in connection with a bulk material handling system. The bulk material handling accessory includes a main frame, a scraping member including an arm and a scraper blade pivotally attached to th... | 08/17/2010 |
| 7740126 | Bulk material handling system A bulk material handling accessory such as a conveyor belt cleaner for use in connection with a bulk material handling system. The bulk material handling accessory includes a main frame, a scraping member including an arm and a scraper blade pivotally attached to th... | 06/22/2010 |
| 7740127 | Bulk material handling system A bulk material handling accessory such as a conveyor belt cleaner for use in connection with a bulk material handling system. The bulk material handling accessory includes a main frame, a scraping member including an arm and a scraper blade pivotally attached to th... | 06/22/2010 |
| 7726466 | Conveyor belt scraper The invention concerns a conveyor belt scraper (10) which includes blade segments (12) each arranged to scrape a portion of the width of a conveyor belt (22). Each blade segment is supported by a bracket (14) which is mounted to a link ( | 06/01/2010 |
| 7677385 | Pre-scraper for a conveyor belt A cleaning device for a conveyor belt for installation essentially transverse to the longitudinal direction of the conveyor belt. The cleaning device comprises a supporting structure (3) adapted to hold the cleaning device in place transverse to the conveyor ... | 03/16/2010 |
| 7669708 | Bulk material handling system and control A bulk material handling system includes a bulk material handling apparatus to convey bulk material and a bulk material handling accessory to aid the bulk material handling apparatus in conveying the bulk material. The bulk material handling accessory includes a con... | 03/02/2010 |
| 7648019 | Conveyor belt scraper A conveyor belt cleaning device which can handle conveyor belts with damaged areas, mechanical joints, and/or head pulleys with profile spaces causing the conveyor belt to run unevenly, is provided. The scraper blade is attached to a T-shaped element which has press... | 01/19/2010 |
| 7556140 | Bulk material handling system A bulk material handling accessory such as a conveyor belt cleaner for use in connection with a bulk material handling system. The bulk material handling accessory includes a main frame, a scraping member including an arm and a scraper blade pivotally attached to th... | 07/07/2009 |
| 7549532 | Conveyor belt cleaning system and mounting method A wiper blade for removing material from a conveyor belt attached to the conveyor belt frame near the nose roller such that the belt will not have material on the belt during the return portion of the loop. The wiper blade is easily attached to and removed from the ... | 06/23/2009 |
| 7472784 | Conveyor belt cleaner scraper blade with sensor and control system therefor A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt and a method of manufacture of the scraper blade. The scraper blade includes a body having a base member adapted to be attached to a cross shaft of a conveyor belt cleaner and a scrapi... | 01/06/2009 |
| 7441647 | Tensioning assembly for conveying belt cleaning blade A tensioning system for a cleaning blade having a frame, a blade support, and a ratchet system. The blade support is movable around a first axis in a first direction to increase cleaning blade pressure and an opposite second direction. The ratchet system has (a) a f... | 10/28/2008 |
| 7428960 | Conveyor belt cleaning system A conveyor belt cleaning system being a torsion blade holder assembly having a mounting sub-assembly and a blade support sub-assembly. The mounting sub-assembly has a first hollow member and a second member situated at least partially therein with torsion elements i... | 09/30/2008 |
| 7412980 | Machine for cleaning glasses or similar articles A washing machine for glass lenses (11) or other similar items of the type including a conveyor (1) has a bearing surface (10) for moving the lenses through a washing chamber (12) made of a succession of washing means (21). The tra... | 08/19/2008 |
| 7383940 | Primary conveyor belt cleaner blade having a hardened edge molded into a resilient body A primary conveyor belt scraper blade has a hardened edge molded within a resilient blade body. The hardened edge has a Mohs hardness of at least 8.9. The hardened edge is retained within the blade body by chemical bonds, so that the hardened edge and the blade body... | 06/10/2008 |
| 7370750 | Conveyor belt cleaner system and method of manufacturing same A conveyor belt cleaner system and method of manufacturing the same comprising a common component support frame, and key components of: mounting bar, blade support and scraper blade wherein the scraper blade is removably secured within a reusable blade support so as... | 05/13/2008 |
| 7367443 | Conveyor belt cleaner system and method of manufacturing same A conveyor belt cleaner system and method of manufacturing the same comprising a common component support frame, and key components of: mounting bar, blade support and scraper blade wherein the scraper blade is removably secured within a reusable blade support so as... | 05/06/2008 |
| 7347315 | Scraper blade for conveyor belts A two piece scraper blade is provided that includes a scraper member that is releasably connected to a base member. The scraper member can be of a different material than the base member to provide various advantages including with respect to its wear resistance. Fu... | 03/25/2008 |
| 7326843 | Locking nut assembly for hi-hat clutch A locking nut assembly for hi-hat clutch comprises a main body having a bolt hole, a locking nut is disposed in the main body, the locking nut a central threaded opening for receiving a threaded stem of the hi-hat clutch, and a key bolt. The locking nut further havi... | 02/05/2008 |
| 7308980 | Method for distributing a conveyor belt cleaner A method of distributing and assembling a conveyor belt cleaner comprises manufacturing a first key component at a first point of fabrication in a longer than needed standard length, obtaining a first common component at a second point of fabrication, cutting the fi... | 12/18/2007 |
| 7275634 | Belt scraper assembly for conveyor belt system An improved belt scraper assembly for use in a conveyor belt system to scrape debris off of a conveyor belt comprises a support bar having scraper blade attached thereto that is biased against the conveyor belt by a spring at both ends of the support bar. Ends of th... | 10/02/2007 |
| 7258225 | Method and apparatus for diverting material An apparatus for diverting material in a controlled manner comprising a diverter plate attached to a mounting assembly. The diverter plate is shaped for receiving falling material and facilitating the flow of the material onto a conveyance means or into storage. The... | 08/21/2007 |
| 7251448 | Cleaning blade control apparatus and method An apparatus includes a xerographic cleaning blade, an actuator member operatively connected to the cleaning blade and movable over a first stroke from a first actuator position to a second actuator position, and a damper operatively connected to the actuator member... | 07/31/2007 |
| 7240393 | Automatic clean device An automatic clean device includes a base body, a transmission element, a cleaning element and an elastic member. Wherein the transmission element and the cleaning element are disposed on the base body, the elastic member has an end connected to the cleaning element... | 07/10/2007 |
| 7231868 | Wine pomace extraction apparatus and method The present invention relates to an apparatus and method for wine pomace extraction from wine processing tanks in a manner so as to minimize maceration of the wine pomace so as not to taint wine entrained within the pomace. In the present invention, wine pomace is m... | 06/19/2007 |
| 7228585 | Rail scraper A rail scraper is provided and includes a mounting plate attachable to the front of a dump truck transfer dump body, an extender attached to said plate, and a scraper attached to said extender that can be raised and lowered by said extender. A rail scraper can furth... | 06/12/2007 |
| 7225916 | Belt cleaner A belt cleaner device is provided in which assembling of a frame and a cleaner head may be performed easily and quickly. A belt cleaner device comprises a frame 3 and one or more cleaner heads 1. The frame 3 includes a support face (3 | 06/05/2007 |
| 7216756 | Constant angle and pressure conveyor belt cleaner and tensioner A tensioner for maintaining engagement of a conveyor belt cleaner, including one or more scraper blades mounted on a rotatable support frame, with a conveyor belt. The tensioner includes a mounting member attached to the support frame for conjoint rotation therewith... | 05/15/2007 |
| 7204365 | Conveyor belt cleaning system An assembly and method for cleaning a conveyor belt system is disclosed. The cleaning assembly is for removing liquids and solids from an endless conveyor belt, the assembly includes a plurality of laterally extending liquid absorbent material sheets disposed adjace... | 04/17/2007 |
| 7159706 | Self cleaning conveyor with roller scraper and debris reduction skirt Disclosed herein is a method and apparatus for a street sweeper having a conveyor assembly. The conveyor assembly has a pair of rollers and a conveyor belt connected therebetween. The conveyor assembly is provided with debris skirts to lift the edge of the conveyor ... | 01/09/2007 |
| 7131525 | Conveyor belt cleaner scraper blade with sensor and control system therefor A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt and a method of manufacture of the scraper blade. The scraper blade includes a body having a base member adapted to be attached to a cross shaft of a conveyor belt cleaner and a scrapi... | 11/07/2006 |
| 7124522 | Cultivating tool and apparatus incorporating same A cultivating tool for breaking up and spreading plant material over and into the ground has opposed ends and upper, lower and intermediate portions extending longitudinally between the ends. The lower portion includes a cutting edge. The intermediate portion includ... | 10/24/2006 |