Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A device for electrical switching in timed sequence comprising: (a) a primary and secondary cam means rotatably mounted on a housing about respectively first and second spaced centers of rotation; (b) electrical switch means including primary cam follower means responsive to movement of said primary cam means for effecting electrical switching of contacts in accordance with a first program sequence; (c) secondary cam follower means responsive to said secondary cam means for altering said electrical switching in accordance with a second program sequence; (d) ratchet and pawl means operative to cause rotation of said primary cam means and including a ratchet wheel rotatable about said first center and a drive pawl orbital about said second center; and, (e) drive means rotatable about said second center to cause said pawl to index said ratchet.
Claim 2
Independent Claim
133 words
A device for electrical switching in timed sequence comprising: (a) a primary and secondary cam means rotatably mounted on a housing about respectively first and second spaced centers of rotation; (b) electrical switch means including primary cam follower means responsive to movement of said primary cam means for effecting electrical switching of contacts in accordance with a first program sequence; (c) secondary cam follower means responsive to said secondary cam means for altering said electrical switching in accordance with a second program sequence; (d) ratchet and pawl means operative to cause rotation of said primary cam means and including a ratchet wheel rotatable about said first center and a drive pawl orbital about said second center; and, (e) drive means rotatable about said second center to cause said pawl to index said ratchet.
Claim 3
Independent Claim
166 words
A device for switching in timed sequence comprising: (a) primary cam means including a ratchet wheel rotatably mounted on a housing; (b) primary cam follower means responsive to movement of said cam means and operative for effecting movement of one of a first set of electrical contacts; (c) drive means for advancing said cam means said drive means including; (i) a drive pawl pivotally mounted on said housing about a point spaced from the center of rotation of said cam means, said pawl contacting said ratchet wheel; (ii) eccentric means rotatable for driving said pawl; (iii) sub-interval cam means mounted on said housing means for rotation about a common center with said eccentric means; (iv) motor means operative to rotate said sub-interval cam means and said eccentric means for effecting movement of said pawl for advancing said ratchet wheel; (d) secondary cam follower means operative in response to rotation of said sub-interval cam means to effect sub-interval movement of one of said set of electrical contacts.
Claim 4
Independent Claim
166 words
A device for switching in timed sequence comprising: (a) primary cam means including a ratchet wheel rotatably mounted on a housing; (b) primary cam follower means responsive to movement of said cam means and operative for effecting movement of one of a first set of electrical contacts; (c) drive means for advancing said cam means said drive means including; (i) a drive pawl pivotally mounted on said housing about a point spaced from the center of rotation of said cam means, said pawl contacting said ratchet wheel; (ii) eccentric means rotatable for driving said pawl; (iii) sub-interval cam means mounted on said housing means for rotation about a common center with said eccentric means; (iv) motor means operative to rotate said sub-interval cam means and said eccentric means for effecting movement of said pawl for advancing said ratchet wheel; (d) secondary cam follower means operative in response to rotation of said sub-interval cam means to effect sub-interval movement of one of said set of electrical contacts.
Claim 5
Dependent Claim
48 words
The device defined in claim 2, wherein: (a) said primary cam follower means is operative to effect movement of one of a first set of electrical contacts; and, (b) said secondary cam follower means is operative to effect movement of one of a second set of electrical contacts.
Claim 6
Dependent Claim
49 words
The device defined in claim 2, wherein, said secondary cam follower means is operative to effect sub-interval opening and closing of said set of contacts and said primary cam follower means is operative to prevent movement of said contacts by said sub-interval cam follower means during a primary interval.
Claim 7
Dependent Claim
29 words
The device defined in claim 1, wherein said pawl makes an angle less than ten (10) degrees above the tangent to the ratchet point of contact by the pawl.