Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 4782848 | Shock actuated device An automatic safety mechanism including an actuator for operating a valve or other controlled unit and which is operable by compressed air or other pressurized fluid, a valve structure for controlling the delivery of pressurized fluid from a source to the... | 11/08/1988 |
| 4781487 | Quick disconnect coupling A coupling which includes an inner and outer part is used to connect two coupled members. The inner part has a cylindrical outer wall and the outer part has a recess around which is a cylindrical inner wall, the recess fitting over the inner part so that ... | 11/01/1988 |
| 4776178 | Thermostat mounting system for automatic defrost refrigerator Frostless type refrigerator/freezers having a plastic liner utilize a metal heat shield disposed between an evaporator and the liner. A defrost heater located below the evaporator is controllably energized to melt frost away from the evaporator. A metal c... | 10/11/1988 |
| 4772152 | Connector for conveying fluid A releasable connector comprises first and second elements (A,B). The elements (A,B) have flanges (10,34) which lie face-to-face when the elements are interconnected. The flange (10) of the first element (A) has flexible lugs (12) which carry barbs (14). ... | 09/20/1988 |
| 4764048 | Ball-and-socket joint A lightweight ball-and-socket joint that is for instance capable of being assembled by a robot. The ball-and-socket joint has a ball head, a CIRCLIP and an outer structural part forming a socket, in which there is a circumferential groove the bottom of wh... | 08/16/1988 |
| 4762024 | Shaft retaining means for a differential gear assembly The present invention relates to a device for retaining a shaft within a differential case. A first groove is formed on the interior of an aperture formed through the differential case, which aperture is adapted to receive and retain one end of a shaft th... | 08/09/1988 |
| 4760700 | Master cylinder for vehicle braking systems A master cylinder for an hydraulic pressure system has a pressure cylinder (1) on which is mounted a reservoir (11), the cylinder having an open end closed by a cap (3). The cap is positively coupled to the cylinder (1) by a coupling device (26) arranged ... | 08/02/1988 |
| 4757751 | Ram couling and cylinder end seal assembly for high pressure cylinder The plunger of the high - pressure cylinder has a driving ram coupled at one end. The coupling includes an annular groove on the plunger end and a two - piece collar with inner ridge. A cup - shaped collar retainer and a snap ring retain the collar in the... | 07/19/1988 |
| 4757615 | Level vial retaining assembly and retainer therefor A vial retaining assembly for a level or like object employs a retainer member for securing the vial in a mounting receptacle of the level. The retainer member comprises a first set of generally radially extending ears which frictionally engage the wall w... | 07/19/1988 |
| 4756640 | Axial retaining member An axial retaining member for retaining a male member and a female member against relative axial motion therebetween. The axial retaining member includes a longitudinally extending main body having a longitudinal axis, a first end, a second end, and a cen... | 07/12/1988 |
| 4752178 | Waved retaining ring A circular waved retaining ring is formed from two turns of a flat elongate wire strip and which follow a continuous sinusoidal wave path that includes a series of waves equidistantly spaced about the ring wavepath, each wave having a shoulder portion whi... | 06/21/1988 |
| 4752163 | Thread cutting diestock assembly A thread cutting diestock assembly is disclosed comprising a ratchet housing having a bore adapted to selectively and detachably receive a large thread cutting die head or an adaptor ring, each of which is provided with ratchet teeth engaged by a pawl on ... | 06/21/1988 |
| 4746273 | Fan base and stand construction A fan assembly, adapted for easy disassembly for storage and transportation and for easy assembly, includes a housing having a protruding tab-like portion and which is adapted to house a motor and blade assembly. A vertical tapered supporting arm having a... | 05/24/1988 |
| 4741225 | Engine and transmission housing with improved attachment In an engine housing and transmission housing adapted to be moved axially together, an easily actuatable and releasable attachment means for joining the housings coaxially together so as to prevent relative rotation and axial separation. Retention grooves... | 05/03/1988 |
| 4735288 | Detachably attaching mechanism for cup of lubricator or filter used with air-actuated device A detably attaching mechanism for a cup of a lubricator or a filter used with an air-actuated device comprising such cup containing therein a quantity of lubrication oil or filter elements, means to supply a quantity of lubrication oil from the cup into a... | 04/05/1988 |
| 4733987 | Spring clip A spring clip which is used to secure the shank of a cutting pick to a pick box or cutting drum in a mining machine. The clip is formed of spring steel and has spaced legs joined by a bight portion. Associated with the bight portion is a bearing part whic... | 03/29/1988 |
| 4717298 | Cargo restraint system A cargo restraint system for the bed of a truck comprising primary cargo securing element and cargo securing members clampingly engageable with the primary cargo securing element. A bed liner may also be included in the combination. Abutment dual tie down... | 01/05/1988 |
| 4701067 | Device for snap fitting an electric apparatus onto a support bar A device is provided for snap fitting an electric apparatus on a support bar comprising, in a case, a housing containing a blade spring and opening into a groove in which one of the edges of the support bar may be engaged against the action of the blade s... | 10/20/1987 |
| 4697783 | Quick release night vision goggle mounting bracket A bracket (10) for releasably engaging a goggle (14) to a headgear (12). The bracket (10) includes a receptacle (52) with inside tapered sidewalls (124) matable with a goggle stud (55) having corresponding outer tapered sidewalls (125). A release lever (2... | 10/06/1987 |
| 4697947 | Plug connection for boring tubes In the case of a plug connection for drilling or boring tubes, rods and worms for earth boring equipment with a male part and a female part, with a radial coupling for torque transfer and with an axial coupling having in the overlap zone of the male and f... | 10/06/1987 |
| 4689507 | Ventilation structure for an electric motor An improved electric motor ventilation structure including a "pull through" fan associated with a motor endshield including a shaft for supporting a fan on one end thereof, and defining a preselectively spaced and contoured air inlet and air circulating c... | 08/25/1987 |
| 4687399 | Retaining rings including orienting slot and hole configurations, and apparatus and method of ring orientation A retaining ring includes a hole in one end and a slot in the other end for use in determining the orientation of the ring. Such orientation is accomplished by randomly placing a plurality of such rings on a rail for similarly shaped member and advancing ... | 08/18/1987 |
| 4668115 | Helicopter rotor spindle retention assembly A threadless retention apparatus holds a spindle (2) against a bearing (22) in a helicopter hub and has a split ring (10) mating with an annular spindle groove (4) and a loading hoop (32) holding the ring (10) within the groove (4), the loading hoop (32) ... | 05/26/1987 |
| 4666330 | Ball joint assembly A ball joint assembly includes a body member having a socket defined by a cylindrical side wall and a bottom wall. A ball stud having a ball end portion is received in the socket, and is adapted to swivel with respect to the body member through a predeter... | 05/19/1987 |
| 4659064 | Apparatus for fixing the position of a valve element shaft in a bore An apparatus for fixing the longitudinal position of a shaft, e.g., a valve stem, within the bore of a body, e.g., a valve body comprising a shaft having a plurality of peripherally extending, generally equally spaced, discrete grooves, the grooved portio... | 04/21/1987 |
| 4657119 | Device for attaching a component of a strut incorporating an automatic adjustment device for a shoe of a drum brake The attachment device incorporates a bearing zone (78) and a projection (80) formed in the web (16) of a shoe of a drum brake. A portion (68) of the component (46) to be attached to the shoe is retained in a working position between the bearing zone (78) ... | 04/14/1987 |
| 4654951 | Method of assembling extreme pressure belted structures A die (10, 40) for extrusion of optical grade fibers includes an insert (12, 42) placed under compression within a sleeve (14, 44). Tapered surfaces (18, 20 & 48, 50) between the insert and the sleeve enable axial assembly of the components when the inser... | 04/07/1987 |
| 4653721 | Device for coupling the shank and the valving element of a shutoff valve to each other The valving element of a valve has an axially projecting tubular extension with an open-ended socket for one end section of a shank which has a larger-diameter cylindrical portion in the deepmost portion of the socket, a smaller diameter cylindrical porti... | 03/31/1987 |
| 4653984 | Turbine module assembly device A first turbine rotor hub 32 and a second turbine rotor hub 42 each have respective internal splines 52, 62 which engage coaxial, non-concentric external splines 54, 64 on a shaft 20 and are in thrust bearing relationship cooperating, circumferentially di... | 03/31/1987 |
| 4649761 | Rotary shaft holding mechanism for a rotary variable element A rotary shaft holding mechanism for a rotary variable element comprises a frame for rotatably supporting a rotary shaft of a rotary variable element such as a variable capacitor, a resilient member fixedly mounted to the frame for urging the rotary shaft... | 03/17/1987 |
| 4647242 | Joint apparatus of speedometer shaft A joint element for securing a speedometer shaft is disclosed which can be readily cut to allow removal of the shaft without damage to other parts when the speedometer is disassembled for service. The joint element comprises a ring of a flexible plastic m... | 03/03/1987 |
| 4646897 | Friction clutch for a vehicle The clutch comprises a clutch plate 10 which can be retracted by a release mechanism 20 to release a driven plate 12. The release mechanism comprises first and second members 24, 26 and an intermediate detent 25. The detent is rotatably mounted on member ... | 03/03/1987 |
| 4646905 | Retaining element Connection means for connecting two components such as conveyor channel sections or guide sections includes an elongate connector. The connector is insertible into laterally-open recesses formed in coupling elements attached to the two components. The lat... | 03/03/1987 |
| 4645180 | Wire form type insert retainer for a wafer style butterfly valve A wafer style butterfly valve has a valve body including a through opening with a cylindrical wall coaxially surrounding an end portion of the fluid passage. The insert is retained within the valve body by at least one wire form held in an annular channel... | 02/24/1987 |
| 4643610 | Fastener mounting assembly Disclosed is a fastener assembly for application to a support panel to receive a threaded bolt extending through a passage in the support panel. A sheet metal element body portion has means for threadably engaging the bolt. The sheet metal element is form... | 02/17/1987 |
| 4630958 | Attaching coaxially a member or fitting with a bore therethrough to a shaft A connection between a first member (e.g. a piston rod) and a bore in a second member (e.g. a piston) which is formed by two spaced grooves on the first member at least one of which is in register with one of two spaced steps in the bore, and a compressio... | 12/23/1986 |
| 4621400 | Method of securing a cover to the end of a thin-walled tube and the article produced thereby A method of securing a cover to the end of a thin-walled tube using a fla. According to the invention the flange is slidably disposed in the tube and is restrained from being pulled out of the tube by a resilient ring accommodated in a shallow groove in ... | 11/11/1986 |
| 4619089 | Building structure A building structure including a plurality of horizontally disposed hollow tubular structural members stacked to form walls joined at a corner, a method of constructing the same, and a wall member, and end connector for a wall member, utilized therein. In... | 10/28/1986 |
| 4615402 | Drill bit and extension adapter An adapter for detachably mounting a drill bit on an extension, is described as having a button-type catch with outwardly diverging flanges, and a separate, split ring of spring steel for exerting a spring biasing force against the button catch. The butto... | 10/07/1986 |
| 4603597 | Drive system A drive system in which a driven member is mounted on a shaft member to rotate in unison therewith. The driven member has a protrusion extending outwardly from one surface thereof. A retaining ring having an open end is mounted on the shaft member. The op... | 08/05/1986 |