Patent US3838797A successfully refreshed from Google Patents.
US3838797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prepositioning device for a blend control valve
Assignee: Dresser Industries Inc
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Filing: 1971-01-11
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Granted: 1974-10-01
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Expires: 1991-01-11
Abstract
Abstract An apparatus for presetting the valving mechanism of a blending dispenser comprising a blend selector with a cam connected thereto for movement with the selector to positions representative of the various blend selections, a cam follower arrangement in engagement with the cam having a free end portion the positions of which are representative of the various blend selections, and a releasable clamping assembly for coupling the free end portion of the cam follower arrangement to the valving mechanism during selection of the blend so that the valving mechanism is preset to a position that effects delivery of the blend selected.
Inventors
- 👤 D Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:59
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/74; B67D7/741; B67D7/742; F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
148 words
An apparatus for presetting the valving mechanism of a blending dispenser comprising a blend selector, cam means connected to the blend selector for movement therewith to positions representative of the various blend selections, cam follower means including a cam engaging portion in cooperative engagement with the cam means and having a free end portion the positions of which are representative of the various blend selections, and releasable clamping means for coupling the free end portion of the cam follower means to the valving mechanism during selection of the blend whereby the valving mechanism is preset to a position that effects delivery of the blend selected, said clamping means positively releasing the free end portion of the cam follower means from the valving mechanism upon backing of the blend selector after selection of the blend whereby the valving mechanism can be adjusted to maintain delivery of the selected blend.
Claim 2
Independent Claim
148 words
An apparatus for presetting the valving mechanism of a blending dispenser comprising a blend selector, cam means connected to the blend selector for movement therewith to positions representative of the various blend selections, cam follower means including a cam engaging portion in cooperative engagement with the cam means and having a free end portion the positions of which are representative of the various blend selections, and releasable clamping means for coupling the free end portion of the cam follower means to the valving mechanism during selection of the blend whereby the valving mechanism is preset to a position that effects delivery of the blend selected, said clamping means positively releasing the free end portion of the cam follower means from the valving mechanism upon backing of the blend selector after selection of the blend whereby the valving mechanism can be adjusted to maintain delivery of the selected blend.
Claim 3
Independent Claim
172 words
An apparatus for presetting the valving mechanism of a blending dispenser comprising a blend selector, cam means connected to the blend selector for movement therewith to positions representative of the various blend selections, cam follower means in engagement with the cam means having a free end portion the positions of which are representative of the various blend selections, and releasable clamping means for coupling the free end portion of the cam follower means to the valving mechanism during selection of the blend whereby the valving mechanism is preset to a position that effects delivery of the blend selected and for releasing the free end of the cam follower means from the valving mechanism after selection of the blend whereby the valving mechanism can be adjusted to maintain delivery of the selected blend, and said cam means includes a cam slot, and said cam follower means includes a pin that rides in said slot to locate the free end portion of said cam follower means at positions representative of the various blend selections.
Claim 4
Independent Claim
172 words
An apparatus for presetting the valving mechanism of a blending dispenser comprising a blend selector, cam means connected to the blend selector for movement therewith to positions representative of the various blend selections, cam follower means in engagement with the cam means having a free end portion the positions of which are representative of the various blend selections, and releasable clamping means for coupling the free end portion of the cam follower means to the valving mechanism during selection of the blend whereby the valving mechanism is preset to a position that effects delivery of the blend selected and for releasing the free end of the cam follower means from the valving mechanism after selection of the blend whereby the valving mechanism can be adjusted to maintain delivery of the selected blend, and said cam means includes a cam slot, and said cam follower means includes a pin that rides in said slot to locate the free end portion of said cam follower means at positions representative of the various blend selections.
Claim 5
Dependent Claim
30 words
An apparatus as in claim 2 wherein the cam follower means comprises an L-shaped lever with the pin at the end of the lever remote from its free end portion.
Claim 6
Independent Claim
147 words
An apparatus for presetting the valving mechanism of a blending dispenser comprising a blend selector, cam means connected to the blend selector for movement therewith to positions representative of the various blend selections, cam follower means in engagement with the cam means having a free end portion the positions of which are representative of the various blend selections, and releasable clamping means for coupling the free end portion of the cam follower means to the valving mechanism during selection of the blend whereby the valving mechanism is preset to a position that effects delivery of the blend selected, said releasable clamping means comprising a pair of arms pivotally connected together at one end thereof, the opposite end of the arms including terminal portions that engage the free end portions of the cam follower means and the valving mechanism to couple them together during selection of the blend.
Claim 7
Independent Claim
147 words
An apparatus for presetting the valving mechanism of a blending dispenser comprising a blend selector, cam means connected to the blend selector for movement therewith to positions representative of the various blend selections, cam follower means in engagement with the cam means having a free end portion the positions of which are representative of the various blend selections, and releasable clamping means for coupling the free end portion of the cam follower means to the valving mechanism during selection of the blend whereby the valving mechanism is preset to a position that effects delivery of the blend selected, said releasable clamping means comprising a pair of arms pivotally connected together at one end thereof, the opposite end of the arms including terminal portions that engage the free end portions of the cam follower means and the valving mechanism to couple them together during selection of the blend.
Claim 8
Dependent Claim
27 words
An apparatus as in claim 4 including biasing means connected between the arms of the releasable clamping means for urging the terminal portions of the arms together.
Claim 9
Dependent Claim
75 words
An apparatus as in claim 5 including means for locking the blend selector at the selected blend prior to the dispensing operation, and a linkage assembly connected to the locking means including a roller positioned between the arms of the releasable clamping means for spreading them apart when the blend selector is locked in place whereby the free end portion of the cam follower means is uncoupled from the valving mechanism during the dispensing operation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |