Richard Chang
Richard Chang, Hsi Chih City TW
Patent application number | Description | Published |
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20090020230 | Hand-held electric sealer with dual heads - A hand-held electric sealer with dual heads includes a seat, a sealing module, a press cover, a supporting casing, and a battery cover. The seat has a central engaging rod and a first replacement element. The sealing module can be attached to, or detached from, the seat. The press cover includes a central engaging piece, a heat insulation block, and a second replacement element. Through engagement of the central engaging piece with the central engaging rod, the press cover can be selectively swung to press the heat insulation block against the sealing module, or to press the second replacement element against the first replacement element. The first replacement element and the second replacement element can be substituted with an appropriate module element upon demand on various functions. | 01-22-2009 |
20090026190 | Hand-held electric sealer with detachable sealing module - A hand-held electric sealer with a detachable sealing module includes a casing, a sealing module, and a press bar. The casing includes, among others, a front contact holder which is provided with an engagement hole. The sealing module includes, among others, a lower cover from underside of which extended an engagement piece. The engagement piece of the sealing module can be engaged with the engagement hole of the casing, such that the sealing module can be conveniently attached to, or detached from, the casing, and that replacement of a damaged sealing module can be readily achieved. In addition, for the sealing module dual heating wires may also be employed so as to obtain a desirable sealing effect to plastic bags. | 01-29-2009 |
Richard Chang, Hsi Chih City JP
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20080314888 | Sealing mechanism for hand-held electric sealer - An improved sealing mechanism includes a heat insulation base, a heating portion, and a compression spring, where the heat insulation base has a left side part, a middle part, and a right side part. The heating portion includes at least two heating wires equidistantly spaced from each other a certain distance, a left locating plate and a right locating plate, where the heating wires are, at both ends, electrically connected with the left locating plate and the right locating plate, respectively. The left locating plate and the right locating plate of the heating portion are engaged with the left side part and the right side part of the heat insulation base, respectively, such that the heating wires are positioned at the middle part of the heat insulation base. | 12-25-2008 |
Richard Chang, Hsi Chih Town TW
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20080199580 | Tea maker with timer - A tea maker, having a receptacle supported by a base, the receptacle being suitable for receiving water from a user and suitable for containing tea leaves, an actuatable valve having open and closed positions flowably connected to said receptacle; and a timer mechanism which sets the acuatable valve into the open position after a predetermined period set by the user, thereby allowing brewed tea to flow from the receptacle into a tea vessel. | 08-21-2008 |
20080202346 | Tea maker with agitator - A tea maker, having a receptacle supported by a base, the receptacle being suitable for receiving water from a user and suitable for containing tea leaves, an actuatable valve having open and closed positions flowably connected to said receptacle; and a timer mechanism which sets the acuatable valve into the open position after a predetermined period set by the user, thereby allowing brewed tea to flow from the receptacle into a tea vessel. The invention further comprises a tea maker which has an agitation assembly which enhances the flavor and health benefits of the tea. | 08-28-2008 |
Richard Chang, Fan Yuan City TW
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20110253260 | WOOD CUTTING MACHINE WITH A FINE ADJUSTMENT DEVICE - A fine adjustment device is provided on a cutting wheel of a wood cutting machine. The fine adjustment device includes two lift units and a driving rod. The two lift units are disposed at two ends of the cutting wheel. The driving rod is axially disposed at one side of the cutting wheel and connected to the two lift units for driving the lift units to simultaneously move the two ends of the cutting wheel up or down, decreasing the height error of the two ends of the cutting wheel and enhancing the processing accuracy and grind quality. | 10-20-2011 |
Richard Chang, Fang Yuan City TW
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20110256816 | ABRASIVE APPARATUS OF A SANDER - An abrasive apparatus of a sander is provided. The abrasive apparatus is disposed above a worktable of the sander and includes a base and a lift unit. At least one abrasive wheel is provided in the base. The base has a top formed with at least one slot. The lift unit is disposed on the abrasive wheel to bring the abrasive wheel to move up so that an abrasive surface of the abrasive wheel passes through the slot of the base and protrudes from the base for the top of the base to sand the side of a workpiece. The cutting width of the sander can be extended to enhance the use of the sander, so the manufacturing process can be shortened to increase the production efficiency. | 10-20-2011 |
Richard Chang, Beijing CN
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20110307432 | RELEVANCE FOR NAME SEGMENT SEARCHES - Improved search result relevance is provided for name segment searches performed by a general web search engine. Entity-related information is mined from web documents and search engine query logs, and metadata is indexed in a search system index. The metadata may include information identifying entity homepages, entity web pages at high quality top sites, other entity-related web pages, entity equivalent data, and/or entity misspellings data. The indexed metadata is employed to provide improved search results relevance for search queries that include an entity's name by improving the ranking of search results corresponding with entity-relevant web pages. | 12-15-2011 |
Richard Chang, Taichung City TW
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20130269964 | MAIN SHAFT STRUCTURE OF TOOL MACHINE - A main shaft structure of a tool machine includes a base, a worktable, a motor fixing seat, a cutter seat, and a cutter wheel unit. The worktable is mounted on the base. The motor fixing seat is connected to one side of the base, and another side is connected with the cutter seat. Two ends of the cutter seat respectively have bearing recesses and first positioning portions close to the bearing recesses. The cutter wheel unit is coupled to the cutter seat. Two ends of the cutter wheel unit are provided with bearing seats which are placed into the bearing recesses. The bearing seats have second positioning portions to connect with the first positioning portions, so that the cutter wheel unit can be detached from the cutter seat quickly. | 10-17-2013 |
Richard Chang, Sunnyvale, CA US
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20140184342 | SYSTEMS AND METHODS FOR FREQUENCY SYNTHESIS TO IMPROVE COEXISTENCE - A frequency synthesizer for a WLAN transceiver is disclosed that may be used to generate 5.4 GHz and 2.4 GHz signals. The frequency synthesizer may be configured to minimize VCO pulling by using VCO operating frequencies that are not integer multiples of the RF bands. Further, the frequency synthesizer may be configured to minimize interference with other frequency bands used by existing wireless systems. | 07-03-2014 |