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...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 6409011 | Gate conveyor A conveyor has an endless belt which encompasses a gate section and a fixed section thereof Both the gate section and fixed section have beds which extend lengthwise and widthwise thereof between rails which extend along the lengths of the section. The ed... | 06/25/2002 |
| 5692597 | Conveyor belt assembly A low cost, self contained endless conveyor belt assembly includes a flat conveyor bed, an endless conveyor belt and a plurality of frame members mounted thereto. The bed mounted frame members support and house a drive shaft which includes sprockets for e... | 12/02/1997 |
| 5409316 | Crossed roller bearing A crossed roller bearing in which the rollers are oriented with their axes of rotation effectively crossed perpendicular to each other can be made from four molded plastic parts which are outer and inner split rings where the outer rings are joined side-b... | 04/25/1995 |
| 5346060 | Link assemblies which are interconnected to provide a self-tensioning conveyor belt A link assembly for an endless conveyor belt includes a pair of side links and a center link interconnected together by way of a spring-biasing mechanism such that the conveyor belt provides its own tension without auxiliary tensioning apparatus.... | 09/13/1994 |
| 5336011 | Storage cap with spring biased female threads An improved protective storage cap for a rod-shaped device or instrument, particularly a fountain pen, wherein the female threads for securing the device within the cap are disposed within an axially and rotationally moveable ring. The ring is held statio... | 08/09/1994 |
| 5284285 | Bearing assembly and web feed device incorporating same A relatively low cost, low friction plastic needle bearing assembly uses a unitary plastic circular member with multiple frangibly attached substantially cylindrical needles axially inserted into a cover. A plastic needle separator housing element provide... | 02/08/1994 |
| 5027993 | Perforated paper feed apparatus with an optical system for detecting the presence and/or motion of the paper A perforated paper feed mechanism such as a tractor has an optical system for detecting the presence of the form and particularly the motion of the form and utilizes a reflector which may be mounted on the lid of the tractor at one end of the tractor (whe... | 07/02/1991 |
| 4989771 | Forms feeding apparatus A tractor for feeding perforated paper forms as in a printer, to and around a platen where a print head impresses characters or other symbols on the paper. The tractor has an endless belt with pins engageable in the paper before, during and after engageme... | 02/05/1991 |
| 4964556 | Forms feed tractor with lid which facilitates forms alignment An improved lid for a forms feed tractor, which feeds successive interconnected sheets of paper having edge perforations (feedholes), the sheets having forms printed thereon or being blank, in printers, copiers and the like is provided with an improved li... | 10/23/1990 |
| 4955520 | Web feed device having an improved lid mechanism An improved lid mechanism for a web feed devices such as tractors for feeding perforated paper webs in printers, copiers and the like, wherein pins on which the lid is pivotally mounted for movement between open and closed position are unloaded (do not ha... | 09/11/1990 |
| 4765523 | Multiposition tractor lid A document feed tractor has a multiposition lid which is held by projections from the frame of the tractor in open position to enable loading of the perforated document (paper) in the tractor. The lid is pivotally mounted in openings in the projections wh... | 08/23/1988 |
| 4714185 | Perforated web feeding apparatus Apparatus for feeding perforated webs which has a form factor and cost which may be much less than conventional perforated paper feed mechanisms such as pinwheels and tractors, and in a preferred form is an elliptical path pin feed using an endless belt h... | 12/22/1987 |
| 4706861 | Perforated web feeding apparatus Web feeding apparatus which may be in the form of a tractor which feeds perforated webs, such as perforated paper in a computer printer, typewriter or the like has a frame which locates a belt having pins projecting from the belt which enter the perforati... | 11/17/1987 |
| 4697727 | Document feed tractor In order to maintain document feed tractors, especially of the type which have timing belts made of the elastomeric (rubber or plastic) material, in circumferential registration with the sprocket which engages and can drive the belt, a member is disposed ... | 10/06/1987 |
