Mechanical connecting device

Claim 2

A projector lamp device comprising a cup shaped shell including a base wall having an opening therein and a forwardly directed peripheral skirt wall, a first plate disposed forwardly of said shell base wall and having an opening therein registering with said base wall opening, a sleeve secured to said first plate in registry with the opening in said first plate and projecting rearwardly through said base wall opening, means supporting said first plate on said shell base wall for angular adjustment of said first plate about angularly related axes, a lamp socket assembly disposed forwardly of said first plate and including a socket rear mounting plate, a spring member having a base section bearing on the front face of said first plate and having an opening registering with said first plate opening and a plurality of angularly spaced curved forwardly outwardly projecting leaf spring fingers extending from said base section into engagement with peripherally spaced points on said socket rear mounting plate, a screw member secured to said socket rear mounting plate and projecting rearwardly loosely through said sleeve and an adjustable nut engaging said screw member rearwardly of said sleeve.

Claim 3

The device of claim 1 including a stop element located on the inside face of said skirt wall and a curved leaf spring extending from said spring member base section to said stop element to rearwardly urge said base section into bearing relationship on the front face of said first plate.

Claim 4

The device of claim 2 wherein said first plate includes an annular rearwardly, inwardly, direct lip surrounding the opening in said first plate and bearing on said shell rear wall.

Claim 5

The device of claim 3 wherein said shell base wall has a pair of peripherally spaced apertures equidistant from the opening in said shell base wall and peripherally spaced 90* and said first plate has a pair of tapped openings angularly aligned with said shell base wall apertures and said first plate support means comprises screws projecting through said shell base wall apertures and engaging said first plate tapped openings.

Claim 6

The device of claim 1 including a forwardly concave reflector positioned forwardly of said lamp socket assembly and having a central opening coaxial with said lamp socket assembly.

Claim 7

A lamp position adjusting apparatus for use in a projector having an umbrella-shaped reflecting mirror comprising: a disc (120) with a central hole and a portion around the central hole protruded into the configuration of a truncated cone or hub rising in one direction from the disc plane; a cup-shaped member (114) adapted to receive a lamp and having a projection on an inner surface; a tubular sleeve (120b) having an inner end coaxially fixed in the central hole of said disc (120) and loosely inserted from the inside into a hole bored centrally in the bottom of said cup-shaped member (114); a lamp socket (107a) having a bottom wall; a bolt (118) coaxially engaged with said lamp socket (107a) loosely inserted into said tubular sleeve from the inner end thereof; a nut (121) threaded onto the projected end of said bolt; a ring (119) arranged between said disc (120) and lamp socket (107a) and having a central hole loosely penetrated by said bolt (118); a plurality of loop springs (119a), each extending integrally and radially from the circumference of the ring (119) in the form of arches rising unidirectionally from the ring plane and engaging the peripheral portion of said bottom wall of the lamp socket for thereby urging the same in the forward direction; another curved leaf spring (119b) extending integrally and radially from the curcumference of said ring (119) and having a free end engaging said projection formed on the inner wall surface of said cup-shaped member (114) for thereby making said hub portion or truncated conical portion of said disc (120) pressedly engage with the inner bottom surface of said cup-shaped member (114); and two screws (122) loosely and externally inserted through corresponding holes bored eccentrically in the bottom of said cup-shaped member at an equal distance from the center thereof and along two radii crossing at right angles and then threaded into corresponding eccentric holes (122a) bored in said disc (120).

Claim 8

A lamp position adjusting apparatus for use in a projector having an umbrella-shaped reflecting mirror comprising: a disc (120) with a central hole and a portion around the central hole protruded into the configuration of a truncated cone or hub rising in one direction from the disc plane; a cup-shaped member (114) adapted to receive a lamp and having a projection on an inner surface; a tubular sleeve (120b) having an inner end coaxially fixed in the central hole of said disc (120) and loosely inserted from the inside into a hole bored centrally in the bottom of said cup-shaped member (114); a lamp socket (107a) having a bottom wall; a bolt (118) coaxially engaged with said lamp socket (107a) loosely inserted into said tubular sleeve from the inner end thereof; a nut (121) threaded onto the projected end of said bolt; a ring (119) arranged between said disc (120) and lamp socket (107a) and having a central hole loosely penetrated by said bolt (118); a plurality of loop springs (119a), each extending integrally and radially from the circumference of the ring (119) in the form of arches rising unidirectionally from the ring plane and engaging the peripheral portion of said bottom wall of the lamp socket for thereby urging the same in the forward direction; another curved leaf spring (119b) extending integrally and radially from the curcumference of said ring (119) and having a free end engaging said projection formed on the inner wall surface of said cup-shaped member (114) for thereby making said hub portion or truncated conical portion of said disc (120) pressedly engage with the inner bottom surface of said cup-shaped member (114); and two screws (122) loosely and externally inserted through corresponding holes bored eccentrically in the bottom of said cup-shaped member at an equal distance from the center thereof and along two radii crossing at right angles and then threaded into corresponding eccentric holes (122a) bored in said disc (120).