US3630264A — Venetian blind tilting apparatus

Claim 1

Independent Claim 163 words

A venetian blind tilting arrangement in which a tilter is mounted in a head channel, actuating means for the tilter extends to the exterior of the head channel, the tilter includes (a) a worm, (b) a gear, and (c) a body which rotatably supports the worm and the gear, and the body has two shells which have mouths and confront each other mouth to mouth- wherein the improvement comprises: the lateral expanse of the mouth of each of the two shells extends lengthwise of the head channel, one of the shells is a front shell and is provided with means that rotatably supports the worm, the other of the shells is a rear shell and is provided with means that rotatably supports the gear on an axis which is parallel to the lateral expanse of the mouth of the shell, the rear shell is affixed to the head channel, and the front shell is readily attachable to and detachable from the rear shell.

Claim 2

Dependent Claim 163 words

A venetian blind tilting arrangement in which a tilter is mounted in a head channel, actuating means for the tilter extends to the exterior of the head channel, the tilter includes (a) a worm, (b) a gear, and (c) a body which rotatably supports the worm and the gear, and the body has two shells which have mouths and confront each other mouth to mouth- wherein the improvement comprises: the lateral expanse of the mouth of each of the two shells extends lengthwise of the head channel, one of the shells is a front shell and is provided with means that rotatably supports the worm, the other of the shells is a rear shell and is provided with means that rotatably supports the gear on an axis which is parallel to the lateral expanse of the mouth of the shell, the rear shell is affixed to the head channel, and the front shell is readily attachable to and detachable from the rear shell.

Claim 3

Dependent Claim 37 words

A venetian blind tilting arrangement as in claim 1 wherein the improvement further comprises: the front shell is readily attachable to and detachable from the rear shell while the rear shell is affixed to the head channel.

Claim 4

Dependent Claim 43 words

A venetian blind tilting arrangement as in claim 1 wherein the improvement further comprises: the rear shell is Provided with bearings which are circumferentially discontinuous, and the gear is provided with journals which are entered sidewise into the bearings through the circumferential discontinuities.

Claim 5

Dependent Claim 59 words

A venetian blind tilting arrangement as in claim 3 wherein the improvement further comprises: the circumferential discontinuities in the bearings are at the mouth of the rear shell and extend from a lower level to an upper level, and the journal-receiving surfaces of the bearings extend rearwardly downwardly from the lower ends of the circumferential discontinuities in the bearings.

Claim 6

Dependent Claim 47 words

A venetian blind tilting arrangement as in claim 1 wherein the improvement further comprises: the expanse from bottom to top of the mouth of the rear shell inclines upwardly rearwardly, and the front shell is rocked toward the rear shell in attaching it to the rear shell.

Claim 7

Dependent Claim 46 words

A venetian blind tilting arrangement as in claim 1 wherein the improvement further comprises: the front and rear shells are provided with interengaging formations at or toward the bottoms of the shells, and are provided with latching means at or toward the tops of the shells.

Claim 8

Dependent Claim 84 words

A venetian blind tilting arrangement as in claim 5 wherein the improvement further comprises: the front and rear shells are provided, at to toward the bottoms of the shells, with interengaging formations which are engaged by moving the front shell downwardly with respect to the rear shell, and the front and rear shells are provided, at or toward the tops of the shells, with latching means which are latched by moving the top of the front shell toward the top of the rear shell.

Claim 9

Dependent Claim 79 words

A venetian blind tilting arrangement as in claim 1 wherein the improvement further comprises: a pulley is connected to the worm, the front and rear shells constitute a housing which encloses the pulley, the worm and the gear, the front shell and the head channel are perforated for the passage of a pulley-engaged cord to and from the exterior of the head channel, and a tilt cord engages the pulley and extends to the exterior of the head channel.

Claim 10

Dependent Claim 29 words

A venetian blind tilting arrangement as in claim 8 wherein the improvement further comprises: the worm is of molded material and the pulley is molded homogeneously with the worm.

Claim 11

Dependent Claim 131 words

A venetian blind tilting arrangement as in claim 1 wherein the improvement further comprises: the worm is of molded plastic and is a spiral worm, a pulley is molded homogeneously with the worm, the front shell is provided with a stub shaft on which the worm and pulley rotate, the front and rear shells constitute a housing which encloses the pulley, the worm and the gear, the front shell and the head channel are perforated for the passage of a pulley-engaged cord to and from the exterior of the head channel, a tilt cord engages the pulley and extends to the exterior of the head channel, and movement of the front shell into attached position with respect to the rear shells moves the worm into position to cooperate with the gear.

Claim 12

Dependent Claim 144 words

A venetian blind tilter in which a gear and a worm are rotatably supported by a body that includes first and second parts which are made of sheet metal and mate with each other-wherein the improvement comprises: the first part of the body rotatably supports the worm, the second part of the body is a single piece of stamped sheet-metal which provides (a) laterally spaced sidewalls have upstanding front edges, (b) a member that connects the sidewalls, and (c) support means for engaging a venetian blind head channel, the sidewalls of the second part of the body are provided with coaxial bearings, the axis of the bearings extending perpendicularly to the sidewalls and the bearings having circumferential discontinuities located at the front edges of the sidewalls, and the gear is provided with journals which are entered sidewise into said bearings through the circumferential discontinuiTies.

Claim 13

Dependent Claim 144 words

A venetian blind tilter in which a gear and a worm are rotatably supported by a body that includes first and second parts which are made of sheet metal and mate with each other-wherein the improvement comprises: the first part of the body rotatably supports the worm, the second part of the body is a single piece of stamped sheet-metal which provides (a) laterally spaced sidewalls have upstanding front edges, (b) a member that connects the sidewalls, and (c) support means for engaging a venetian blind head channel, the sidewalls of the second part of the body are provided with coaxial bearings, the axis of the bearings extending perpendicularly to the sidewalls and the bearings having circumferential discontinuities located at the front edges of the sidewalls, and the gear is provided with journals which are entered sidewise into said bearings through the circumferential discontinuiTies.

Claim 14

Dependent Claim 50 words

A venetian blind tilter as in claim 11 wherein the improvement further comprises: the second part of the body is a single piece of stamped sheet metal which provides a top wall and a rear wall, one of these walls being the member that connects the sidewalls of the body.

Claim 15

Dependent Claim 47 words

A venetian blind tilter as in claim 12 wherein the improvement further comprises: the second part of the body is a single piece of stamped sheet metal which additionally provides a bottom member which extends between the sidewalls and contacts or closely approaches each of the sidewalls.

Claim 16

Dependent Claim 47 words

A venetian blind tilter as in claim 11 wherein the improvement further comprises: the second part of the body is a shell having a mouth, and the expanse of the mouth inclines, from bottom to top, toward the side of the shell that is opposite the mouth.

Claim 17

Dependent Claim 44 words

A venetian blind tilter as in claim 14 wherein the improvement further comprises: the first part of the body includes a shell having a mouth, and the first shell is in mouth-to-mouth relation to the shell which is the second part of the body.

Claim 18

Dependent Claim 77 words

A venetian blind tilter as in claim 15 wherein the improvement further comprises: the two shells are provided, at or toward the bottoms of the shells, with interengaging formations which are engaged by moving one of the shells downwardly with respect to the other, and the two shells are provided, at or toward the tops of the shells, with latching means which are latched by moving the top of one shell toward the top of the other.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-12-27	1975-06-28	1975-12-28	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-12-27	1979-06-28	1979-12-28	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-12-27	1983-06-28	1983-12-28	$7700.00	Window Closed / Lapsed

Venetian blind tilting apparatus

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