Timer with internal stop mechanism comprising annular ring structure interfitting complementary housing member

Claim 2

A timer comprising: a. drive means, b. means coupling said drive means to a rotatable shaft means, including clutch means, c. at least two members carried by said shaft, one of said members including cam means, d. a housing means including a cylindrical wall substantially surrounding said shaft and said members, e. a ring shaped stop means sandwiched between said two members, and a stop lug carried by one of said members cooperatively engaging a stop arm projecting from said stop means to limit the rotation of said shaft means, and f. electrical switch means responsive to the rotation of said cam means.

Claim 3

A timer according to claim 1 wherein said stop means includes support means cooperating with said housing means locating and retaining said stop means in a predetermined position.

Claim 4

A timer according to claim 1 wherein said stop lug is carried by said cam means.

Claim 5

A timer according to claim 1 wherein said housing means includes bolt means securing a cover plate to an end of said wall and said stop means further includes support means engaging said bolt means so as to locate and retain said stop means in a predetermined position.

Claim 6

A timer according to claim 4 wherein said stop means further includes support means engaging said cover plate to further locate and retain said stop means.

Claim 7

A timer according tO claim 1 wherein the other of said two members is a gear of said means coupling said drive means to said shaft means.

Claim 8

A timer according to claim 6 wherein said clutch means includes a pair of spring washers, each carried on said shaft means, one each engaging a face of said gear.

Claim 9

A timer comprising: a. a housing including a cup-shaped member and a cover adapted to close the same, b. a cam programming means including a shaft means carrying at least one cam, c. retaining means integrally formed with said housing, d. at least two contact blades carried by said retaining means so as to cantilever said contact blades, electrical contacts carried by said contact blades and adapted to engage one another, e. cam follower means carried by one of said contact blades responsive to said cam programming means, f. contact blade stop means disposed at the free ends of said blades, g. motor drive means including a gear carried by said shaft adjacent said cam and clutch means said motor drive means applying power driven rotation to said shaft, and h. a ring shaped stop means sandwiched between said gear and said cam, and a lug carried by said cam cooperatively engaging a stop arm projecting from said ring shaped stop means to limit the rotation of said shaft means.

Claim 10

A timer comprising: a. a housing including a cup-shaped member and a cover adapted to close the same, b. a cam programming means including a shaft means carrying at least one cam, c. retaining means integrally formed with said housing, d. at least two contact blades carried by said retaining means so as to cantilever said contact blades, electrical contacts carried by said contact blades and adapted to engage one another, e. cam follower means carried by one of said contact blades responsive to said cam programming means, f. contact blade stop means disposed at the free ends of said blades, g. motor drive means including a gear carried by said shaft adjacent said cam and clutch means said motor drive means applying power driven rotation to said shaft, and h. a ring shaped stop means sandwiched between said gear and said cam, and a lug carried by said cam cooperatively engaging a stop arm projecting from said ring shaped stop means to limit the rotation of said shaft means.

Claim 11

A timer according to claim 8 wherein at least one of said contact blades include elongated centrally disposed apertures.

Claim 12

A timer according to claim 8 wherein said contact blades are L-shaped, and at least one of said blades includes an elongated centrally disposed aperture extending past said bend.

Claim 13

A timer according to claim 9 wherein said contact blade retaining means comprises: an L-shaped seat formed in said cup shaped member, and L-shaped seat and a rectangular shaped member extending from said cover, and notches formed in said cup shaped member adapted to receive said L-shaped seat and said rectangular shaped member extending from said cover, insertion of said seat and said rectangular shape member in said notches providing slots receiving said contact blades to cantilever the same; and wherein said blade stop means comprises a stepped seating member extending from said cover, and notches and an L-shaped seat member formed in said cup shaped member, insertion of said stepped seating member into said notches providing a slot between said stepped seating member and said L-shaped seat member, said stepped seating member disposed to receive and stop at least one free end of said contact blades, and said slot adapted to receive an additional contact blade.