Bizarre Patents
Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
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| Number | Title | Issue Date |
| 7895837 | Differential hydraulic master cylinder A differential hydraulic master cylinder (10) has a cylinder body (12) in which is provided a larger diameter first chamber (18) and a smaller diameter second chamber (20). A first fluid passageway (60, 74, 78, 80) connects the fir... | 03/01/2011 |
| 7841178 | Master cylinder A master cylinder comprising a large diameter pressurizing chamber and a small diameter hydraulic chamber, a control valve device in which a control valve body releases a hydraulic pressure in the large diameter pressurizing chamber to a reservoir side such that the... | 11/30/2010 |
| RE40573 | Master cylinder A master cylinder of the invention supplies a brake fluid from a large diameter pressurizing chamber 56 to a small diameter hydraulic chamber 49 by opening a reverse flow checking opening and closing portion 61 by sliding movement of a stepped p... | 11/18/2008 |
| 7340894 | Unitized spring device and master cylinder including such device The invention is directed to improvements to the assembly of a unitized spring device. The spring device comprises a pair of retainer members which are tubular in shape and hollow inside. The retainer members have different outer circumference diameters which allow ... | 03/11/2008 |
| 7159704 | Hydraulic system A hydraulic system in a motor vehicle for operating a friction clutch is described, including a slave cylinder acting upon a spring plate of the clutch, and a manually or automatically operated master cylinder acting upon the slave cylinder. The hydraulic system inc... | 01/09/2007 |
| 7073875 | Brake fluid circulation A brake circuit has a brake connected with a master cylinder via a brake application line. The brake master cylinder has a first chamber in which brake fluid is pressurized on movement of a first piston in a brake applying direction by an operating device. The first... | 07/11/2006 |
| 7043911 | Vehicle braking system master cylinder A master cylinder suitable for a vehicle braking system has an unusual capability to supply quantities of fluid and fluid pressures at its output in differentiated manner in dependence on the braking stage, preventing long transitory stages between an approach stage... | 05/16/2006 |
| 6845615 | Master cylinder A master cylinder having a housing with first and second bores that are connected to a same circuit in a braking system. A first piston is sealingly retained in the first bore to define a first chamber and a second piston is sealingly retained in the second bore to ... | 01/25/2005 |
| 6840043 | Master cylinder A master cylinder that can sufficiently compensate for an ineffective fluid amount at an initial stage of a stroke, even at a time of sudden braking in a case where a hydraulic control unit is disposed between the master cylinder and a brake device, is provided. The... | 01/11/2005 |
| 6708493 | Variable ratio of force-enlargement master cylinder of a braking system A variable ratio of force-enlargement master cylinder for a braking system is described. The variable ratio of force-enlargement master cylinder has a cylinder, an outer piston, and an inner piston, in which comprise a plurality of cavities and openings therein. Whe... | 03/23/2004 |
| 6698202 | Master cylinder A master cylinder of the invention supplies a brake fluid from a large diameter pressurizing chamber 56 to a small diameter hydraulic chamber 49 by opening a reverse flow checking opening and closing portion 61 by sliding movement of a stepped piston 16 f... | 03/02/2004 |
| 6502396 | Two stage brake valve A two-stage brake valve, has a pair of stages with different effective areas which become effective in succession upon an actuation of the valve, including a larger area fill chamber and a smaller area pressure chamber. A fill stage pressure relief valve ... | 01/07/2003 |
| 6438955 | Master cylinder The object of the present invention is to exhibit the function of a throttle valve mechanism without making the whole of a master cylinder large-sized and to simplify the structure and to reduce the number of pieces of parts. In order to attain this objec... | 08/27/2002 |
| 6082831 | Electro-hydraulic brake apply system displacement augmentation A brake apply system includes a modulator that has a first bore carrying a power driven dual-effect piston. The piston has a base piston surface and an augmentation piston surface. A wheel brake is hydraulically connected to the modulator through an open ... | 07/04/2000 |
| 5983637 | Hydraulic brake booster having piston travel limit feature A brake booster for a brake system of a vehicle, wherein the brake booster is in fluid communication with a source of pressurized fluid. The brake booster includes a housing having a bore formed therein and a conduit formed therein being in fluid communic... | 11/16/1999 |
| 5713640 | Hydraulic braking system with an auxiliary pressure source having a quick fill chamber Hydraulic braking system with slip control, comprises a working piston guided within the brake pressure generator, a booster piston of a hydraulic brake force booster for actuating the working piston, at least one wheel brake connected to the brake pressu... | 02/03/1998 |
| 5647213 | Master cylinder with quickfill stage A master cylinder (10) for a hydraulic brake system comprises a quickfill stage (28) which in the initial phase of an actuation of the master cylinder rapidly fills an associated brake system with hydraulic fluid upon a relatively short actuation travel. ... | 07/15/1997 |
| 5557935 | Apply-rate-independent fast-fill master cylinder A master cylinder having, in addition to a main pressurizing chamber, a fast-fill pressurizing chamber to quickly force, while pedal effort is minimal, brake pads or shoes from initially retracted positions to positions where the pads or shoes are in cont... | 09/24/1996 |
| 5359854 | Actuating unit for hydraulic brake system An actuating unit for a hydraulic brake system for automotive vehicles which operates by a precisely defined change-over pressure and with lost travel independent of the speed of actuation. The actuating unit includes a pneumatic brake power booster and a... | 11/01/1994 |
| 5233835 | Two-stage valve A two-stage brake valve includes a stepped valve bore and pressure piston defining a first stage with a large effective area and a second stage with a smaller effective area. The two stages become effective in succession so that, initially the first stage... | 08/10/1993 |
| 5127506 | Clutch actuating system According to an illustrative example of the invention, a foot pedal acts upon a first master cylinder and with delay upon a second master cylinder. Both master cylinders are connected with a slave cylinder which acts upon a clutch releaser. In a first ran... | 07/07/1992 |
| 5107681 | Oleopneumatic intensifier cylinder An oleopneumatic load intensifier apparatus for creating a rapid advance of a tool carrying rod followed by slow advance of the piston rod at an increased load. The apparatus has a master cylinder and an actuating cylinder that can assume different positi... | 04/28/1992 |
| 5079914 | Hydraulic brake system with fast-fill valve A hydraulic brake system comprising a master brake cylinder (10), a brake force booster (12) and a filling chamber (38) by means of which in the initial phase of a brake actuation the brake system on relatively short pedal travel is rapidly filled with hy... | 01/14/1992 |
| 4963692 | Brake control valve A brake control valve has a valve bore, a piston member and an end member closing one end of the valve bore. One of the piston and end members has a projection and the other member has a corresponding blind bore for sealingly receiving the projection. The... | 10/16/1990 |
| 4942738 | Pneumatic brake booster piston with sleeve defining quick-fill input chamber In a booster casing (12) a movable wall (14) separates two compartments (16,18) from each other. In inoperative position, a control valve (20) connects the two compartments (16,18) with each other, and separates them when in an operative position, connect... | 07/24/1990 |
| 4860541 | Two stage relief valve for master cylinder quick-fill chamber A two stage relief valve for a quick-fill master cylinder (10). The two stage relief valve (54) has a ball (88) that is biased against a first seat (82) to control the flow of fluid from a quick-fill chamber (30) and a unitary structure (55, 74) which is ... | 08/29/1989 |
| 4790138 | Master cylinder fast fill valving mechanism with ramp A master cylinder (10, 210, 310, 410) includes a housing bore (14) having at one end (16) a bearing member (18) attached thereto and retaining a sleeve member (20) within the bore (14). One piston (30, 230, 530) has at one end (32, 232) thereof a fast fil... | 12/13/1988 |
| 4773222 | Pneumatic brake booster with booster-cylinder-end retained relay valve A pneumatic-hydraulic booster for vehicle includes a master cylinder part; a pneumatic cylinder part combined with the master cylinder part which includes a power piston slidable fitted to a cylindrical casing and an output rod fixed to the power piston, ... | 09/27/1988 |
| 4771604 | Pneumatic brake booster with relay valve in the booster-cylinder-end A pneumatic-hydraulic booster for vehicles includes a master cylinder part; a pneumatic cylinder part combined with the master cylinder part including a power piston slidably fitted to a cylindrical casing and an output rod fixed to the power piston, exte... | 09/20/1988 |
| 4754605 | Hydraulic brake system A hydraulic brake system comprising a pedal-operated brake booster (5), which is connected with the master cylinder (3) and includes an auxiliary pressure supply system (13), a booster piston (4), and a booster chamber (7) wherein an auxiliary pressure is... | 07/05/1988 |
| 4745751 | Master cylinder with fast fill valving mechanism The master cylinder (10) comprises a housing (12) having a longitudinal bore (14), a housing end (16) enclosed by a bearing member (18) which retains a sleeve member (20) within the bore (14), a reservoir (70) mounted on the housing (12) and a pair of pis... | 05/24/1988 |
| 4744219 | Master cylinder A master cylinder has a piston slidably fitted in a stepped cylinder bore including a first pressure chamber connected through a coupling hole to a reservoir. When a fluid pressure in the first pressure chamber is increased to a predetermined level at the... | 05/17/1988 |
| 4738109 | Two stage brake control valve A two stage brake valve for communicating fluid pressure to a brake assembly. The valve has a stepped cylinder formed therein in which a high volume piston and high pressure valve are slidably located. The piston and valve define high volume and high pres... | 04/19/1988 |
| 4732001 | Hydraulic booster with boost-pressure responsive valve A braking pressure generator (1,21) for a vehicular hydraulic brake system, wherein a booster piston (15) which is slidable by hydraulic pressure is displaceable in the actuating direction. The booster piston (15) is arranged as a stepped piston with a sm... | 03/22/1988 |
| 4729609 | Slip-controlled brake system with fast-fill cylinder For attaining an abrupt change in ratio, in a slip-controlled brake system for automotive vehicles, the chamber (11) of a fast-fill cylinder (4) is connected to a plunger chamber (41) of the braking pressure generator (1) which is acted upon by the booste... | 03/08/1988 |
| 4718234 | Fast fill valving mechanism for a master cylinder The master cylinder (10) comprises a housing (12) having a longitudinal bore (14), an end (24) enclosed by a bearing member (18) which retains a sleeve member (20) within the bore (14), a reservoir (70) mounted on the housing (12) and a pair of pistons (3... | 01/12/1988 |
| 4703624 | Master cylinder for vehicle braking system A master cylinder of the quick-fill type has a pressure cylinder, a reservoir mounted thereon and a quick-fill chamber. The reservoir forms a compartment housing valve means controlling communication between the quick-fill chamber and reservoir.... | 11/03/1987 |
| 4702077 | Master cylinder for vehicle braking system A master cylinder of the quick-fill type has an open-ended pressure cylinder closed by a closure member and a reservoir mounted on the cylinder. The closure member partially defines a quick-fill chamber in which slides a piston connected to a piston of th... | 10/27/1987 |
| 4702530 | Hydraulic brake system with fast-fill cylinder A hydraulic brake system (FIG. 2) composed of a master cylinder (30) coupled to the brake pedal (46), wherein there is provided a hydraulic booster (31) with a booster piston (91) and a booster chamber (35), and an auxiliary pressure proportional to the p... | 10/27/1987 |
| 4694651 | Brake master cylinder In a master cylinder of the quick-fill type, communication between the quick-fill chamber (8) and the reservoir (13) is controlled by a valve assembly comprising a pressure responsive valve which opens when the pressure in the quick-fill chamber (8) reach... | 09/22/1987 |
